AGRITEK VOLUME 17 EDISI ULANG TAHUN KE-18 JULI ISSN:
|
|
- Carmel Craig
- 6 years ago
- Views:
Transcription
1 EFFECT OF DURATION OF INCORPORATION OF COMMON SUNFLOWER (Helianthus annuus L.) LEAVES IN THE SOIL ON THE GERMINATION OF SELECTED WEEDS AND CROPS Mohammad Cholid Indonesian Tobacco and Fibre Crops Research Institute ABSTRACT Experiment were conducted with the following objectives : To determine the effect of length of incorporating common sunflower leaves in the soil on growth of itchgrass [Rottboellia. cochinchinensis (Lour)W.D. Clayton], barnyardgrass (Echinochloa glabrescens Munro ex Hook.f.), water purslane [Ludwigia octovalvis (Jacq.) Raven], mungbean (Vigna radiata L.), and rice (Oryza sativa L.). Treatments were replicated three times in a factorial completely randomized design. The first factor were species of crops/weeds: rice, mungbean, itchgrass, barnyardgrass, water purslane. The Second factor were duration of incorporation of common sunflower residues in soil: untreated, 0 day, 7 days, dan 14 days. The Result indicated that incorporation of common sunflower leaves in the soil at seeding (0 day) reduced seed germination and seedling growth of all test species. The leaves incorporated in the soil decreased germination and further growth of all test plant seedlings according to the duration of incorporation in the following order: 0 day (at seeding) > 7 days before seeding > 14 days before seeding. Incorporated common sunflower leaves in the soil had inhibitory potential on water purslane and itchgrass, but less or no inhibition on rice and mungbean. It may be inferred that common sunflower leaves may be used for effective itchgrass and water purslane controls, without damaging mungbean and rice plants. Barnyardgrass was affected by leaf residues only at germination and initial growth, but less affected at further growth stage. Key word: Allelopathic, Helianthus annuus L, crops, weeds ABSTRAK Pengaruh lama pencampuran residu daun bunga matahari (Helianthus annuus L.) dalam tanah pada perkecambahan beberapa tanaman dan gulma. Penelitian ini bertujuan untuk mengevaluasi pengaruh lama pencampuran residu dari daun tanaman bunga matahari dengan tanah terhadap pertumbuhan Rottboellia cochinchinensis (Lour)W.D. Clayton, Echinochloa glabrescens Munro ex Hook.f., Ludwigia octovalvis (Jacq.) Raven, kacang hijau (Vigna radiata L.), dan padi (Oryza sativa L.). Rancangan Percobaan yang digunakan adalah Rancangan Acak Kelompok Faktorial, dengan 3 ulangan. Faktor pertama adalah spesies tanaman dan gulma yaitu: padi, kacang hijau, Rottboellia. Cochinchinensis, Echinochloa glabrescens, dan Ludwigia octovalvis. Faktor kedua adalah lama pencampuran yaitu : tanpa residu; 0 (saat tanam), 7 hari sebelum tanam (hbt), 14 hbt. Hasil percobaan menunjukkan bahwa pencampuran 1
2 residu daun tanaman bunga matahari saat tanam (0 hbt) menghambat perkecambahan dan pertumbuhan semua tanaman yang diuji. Derajat penghambatan perkecambahan dan pertumbuhan terhadap tanaman yang diuji secara berurutan: 0, 7, 14 hari sebelum tanam. Perkecambahan, serta pertumbuhan tunas dan akar padi lebih sensitif terhadap larutan ekstrak daun bunga matahari dibanding kacang hijau. Residu daun bunga matahari menghambat perkecambahan dan pertumbuhan tanaman lebih besar pada Ludwigia octovalvis, Rottboellia. Cochinchinensis dibanding pada tanaman (padi dan kacang hijau). Hal ini menunjukkan bahwa residu daun dari tanaman bunga matahari efektif untuk mengendalikan gulma Ludwigia octovalvis, Rottboellia. Cochinchinensis, dengan tanpa menimbulkan kerusakan pada tanaman kacang hijau, serta sedikit penghambatan pada tanaman padi. Kata kunci : Alelopati, Helianthus annuus L, tanaman, gulma INTRODUCTION Modern agriculture is commercial and target-oriented and hence in order to achieve enhanced production, large amount of synthetic herbicides are used to control weeds (Batish et al., 2001). In order to maintain the sustainability of the agro-ecosystems, it is essential to explore eco-friendly means of alternative weed management. Allelopathy is one of the promising alternatives which are being manipulated for getting benefits of weed management through various strategies. These activities have shown significant prospects for allelopathy being utilized for increasing crop productivity and quality of food for humans, decreasing our reliance on synthetic pesticides and improving the ecological environment. Recent research has demonstrated possibilities of such prospects in reality, especially in weed control. In higher plants allelochemicals are released from plants through (a) volatilization (b) leaf or stem leachates, (c) root exudates and (d) decomposition of plant residues (Rice, 1984). Allelopathic effects of residues of sunflower have been studied on the germination, growth and yield of other crops. Soil incorporation of its residues at 2g/80g soil inhibited seed germination and seedling growth of sorghum. Germacranolide isolated from sunflower inhibited the growth of oat coleoptiles (Spring and Hager, 1982). Studies have shown that common sunflower has allelopathic properties on some plant species. It s inhibiting property has been tested on several weeds such as jungle rice (Echinochloa colona L.) (Abeysekara, 1992), Trianthema portulacastrum L., Parthenium hysterophorus L, and Amaranthus viridis L. (Dharamraj, 1998), but not on 2
3 other weed species especially major weeds in the Philippines. Further tests on major weeds in major crops need to be conducted. The study aimed to determine the allelopathic effect of common sunflower through soil incorporated leaves on the germination and further seedling growth of itchgrass (Rottboellia. cochinchinensis (Lour)W.D. Clayton), barnyardgrass (Echinochloa glabrescens Munro ex Hook.f.), water purslane (Ludwigia octovalvis (Jacq.) Raven), mungbean (Vigna radiata L.), and rice (Oryza sativa L.). MATERIALS AND METHODS Experiments were conducted from April 2003 to September 2003, at the Central Experiment Station, Department of Agronomy, U.P. Los Baños, College of Agriculture, Laguna, Philippines. Mature seeds of itchgrass (R. cochinchinensis (Lour) W.D. Clayton), barnyardgrass (Echinochloa glabrescens Munro ex Hook.f.), water purslane (Ludwigia octovalvis (Jacq.) Raven) were collected from farms in Los Baños. Common sunflower (Helianthus annuus L.) and rice (Oryza sativa L.) var. PSB PC-74 seeds were obtained from the UPLB Central Experiment Station, and mungbean (Vigna radiata L.) var. MG 50-10A seeds were obtained from the Bureau of Plant Industry. All seeds were sun-dried and stored in a closed container at room temperature prior to use. All test plants were tested for germination in petridishes at laboratory condition prior to the experiment. This was to make sure that in all species, germination was above 75%. Several kinds of seed treatments were tried to improve seed germination. For example, itchgrass seeds after 6 months of storage were heated in an oven at 70 o C for 4 hours, then a cut was made on both sides of the seed cover before germinating under laboratory room condition. Common sunflower plants, which were grown at the UPLB Central Experimental Station were harvested at the start of flowering. Common sunflower leaves were cut and chopped into 2 to 3 cm pieces and uniformly incorporated in soil for a length of 0, 7 and 14 days in plastic pots. The plastic cups contained 450 grams of thoroughly mixed upland soil for mungbean and itchgrass as test plants and lowland soil for rice, barnyardgrass and water purslane as test plants. These soils were collected from 0-15 cm 3
4 depth from a uniform location in the lowland and upland areas, at the Central Experiment Station, Department of Agronomy, U. P. Los Baños. Based on result of previous experiment, concentration 1:16 (w/v) was selected for further study. This is equivalent to one gram common sunflower leaves for every 16 grams soil (1:16 w/w) or equal to g leaves per 450 g soil. Leaf residues were incorporated in the soil in 12 cm diameter plastic cups for different durations before sowing the test plants. Ten seeds of test crops (rice and mungbean) and 20 seeds of test weeds (itchgrass, barnyardgrass and water purslane) were sown at the same time in the cups as indicated under treatment and experiment design. design. Treatments were replicated three times in a factorial completely randomized The first factor were species of crops/weeds: rice, mungbean, itchgrass, barnyardgrass, water purslane. The Second factor were duration of incorporation of common sunflower residues in soil: untreated, 0 day, 7 days, dan 14 days. Distilled water was added to maintain field capacity of the soil in the cups. The plants were kept in the greenhouse. The number of germinated seeds was counted 8-10 days after sowing (DAS). Seedlings were thinned to two per cup at 10 DAS, and plants were watered as needed. Plant height, number of leaves produced, number of tillers or branches were recorded at weekly intervals for 4 weeks after seedling emergence. At 28 days after planting, the plants were slowly pulled from the soil with the aid of water and placed on the screen. The roots were washed free of soil and plants were separated into shoots and roots. The samples were dried at 80 o C for 48 hours in an oven and dry weights were recorded. RESULTS AND DISCUSSION Seed Germination Common sunflower Leaves incorporated into the soil significantly inhibited germination of rice, itchgrass, barnyardgrass and water purslane, but not mungbean. The effect of the duration of leaf incorporation in the soil on germination of the crops and weeds are shown in Table 1. Germination of rice was inhibited at seeding (zero day) of soil incorporation (Table 1). Germination of rice was highest in the untreated (93.33%). Leaf incorporation 4
5 for 0, 7, 14 days did not significantly affect rice germination, but percent germination were significantly lower than the untreated where there were no leaves incorporated. Mungbean seed germination, however, was not affected by the common sunflower leaves at all durations of incorporation. Table 1. Effect of duration of leaf incorporation in soil on germination of rice, mungbean, itchgrass, barnyardgrass and water purslane seeds DURATION RICE MUNG- BEAN ITCHGRASS BARNYARD- GRASS W.PURS- LANE % Germination Untreated 93.33a 93.33a 75.00a 76.67a 83.33a 0 day 75.00b 83.33a 26.67c 28.33c 8.33c 7 days 78.33b 83.33a 51.67b 46.67b 35.00bc 14 days 85.00ab 90.00a 60.00ab 53.33b 50.00ab % Inhibition over the untreated Untreated day days days Number followed by the same letters in each column are not significantly different at 1% LSD Germination of the test weed species was markedly inhibited by leaves incorporated in the soil. The pattern of germination of the test weed species was similar. The shorter the duration of leaf incorporation in soil (0 day), the lower, the percent germination. Water purslane showed the most inhibition, followed by barnyardgrass and itchgrass. As the duration of incorporation was prolonged percent germination of the weeds increased. This result suggests that leaves of common sunflower were more inhibitory when freshly incorporated, and that the inhibitory principle might have been altered during incorporation in soil and with time. As compared with the test crop species, the weed test species were more sensitive to the inhibitory effect of the common sunflower leaves. Plant Height The effect of duration of leaf incorporation in soil on plant height of rice, mungbean, itchgrass, barnyardgrass and water purslane at 28 DAS is shown in Table 2. 5
6 Plant height of all test species was significantly reduced, regardless of duration of incorporation of leaves. Between the crop species, plant height of rice was more inhibited than that of mungbean, suggesting that mungbean was less sensitive to the incorporated leaves of common sunflower. Such result agrees with that on the germination effect of the leaf aqueous extracts on mungbean in the first experiment. Table 2. Effect of duration of leaf incorporation in soil on plant height of rice, mungbean, itchgrass, barnyardgrass and water purslane at 28 DAS DURATION RICE MUNG- BEAN ITCH-GRASS BARNYARD- GRASS W.PURS- LANE Plant height (cm) Untreated 50.92a 30.88a 64.95a 62.83a 16.92a 0 day 25.77c 19.57b 13.05d 19.45c 0.45c 7 days 36.83b 21.17b 24.35c 52.72ab 1.82bc 14 days 40.48b 23.18ab 35.13b 47.22b 4.65b % Inhibition over the untreated Untreated day days days Numbers followed by the same letters in each column are not significantly different at 1% LSD Plant height of the weed test species was markedly inhibited by leaves incorporated in soil. The pattern of inhibition was similar for all the weed test species. Water purslane, however exhibited the greatest reduction followed by itchgrass and barnyardgrass at all durations of incorporation of leaves in the soil (Table 2). Among the test species, the weed test species were greatly inhibited by leaves incorporated in soil than the crop test species at all durations of incorporation. The reduction in plant height of test species due to the incorporated leaves compared to the untreated may be due to the presence of allelochemicals in the common sunflower leaves. Growth suppression may result from action of known allelochemicals like coumarin or phenolic acid derivatives (Einhellig and Kuan, 1971). Negative effect of sunflower on other crops may be due to the biochemical interference of allelopathy (Iron and Burnside, 1982; Schon and Einhellig, 1982). Figures 1, dan 2 illustrate this inhibition in seedlings of rice, mungbean, itchgrass, barnyardgrass, and water purslane as affected by the duration of incorporation in the soil of the common sunflower leaves. 6
7 Figure 1. Effect of incorporated common sunflower leaves on rice and mungbean at 14 days after seeding. Figure 2. Effect of incorporated common sunflower leaves on itchgrass and barnyardgrass at 14 days after seeding Figure 3. Effect of incorporated common sunflower leaves on water purslane at 14 days after seeding 7
8 Plant Dry Weight Dry weight of all test species was significantly reduced, regardless of duration of incorporation of common sunflower leaves in soil (Table 3). Leaf incorporation at seeding had greater inhibitory effect than that at 7 days and 14 days before seeding. Shoot and root dry weights of both crop species were reduced at seeding (0 day) i.e. rice (0.60 g/pot and 0.14 g/pot) and those of mungbean (0.57g/pot and 0.10 g/pot), however these were not significantly different from those at 7 days and 14 days before seeding. This again suggests that freshly incorporated residues were more inhibitory than those residues made to decompose for 7 and 14 days. It may be inferred that the inhibitory materials have undergone some transformation as incorporation in the soil was prolonged. Table 3. Effect of duration of leaf incorporation in soil on shoot and root dry weights of rice, mungbean, itchgrass, barnyardgrass and water purslane DURATION DRY WEIGHT (g/pot) Rice Mungbean Itchgrass Barnyardgrass W.purslane Shoot Untreated 3.06a 1.52a 5.51a 3.16a 0.65a 0 day 0.60b 0.57b 0.08c 0.20c 0.00c 7 days 0.64b 0.60b 0.49b 1.79b 0.02bc 14 days 0.86b 0.58b 0.56b 1.83b 0.18b Root Untreated 1.60a 0.37a 2.80a 2.32a 0.26a 0 day 0.14c 0.10b 0.11c 0.08c 0.00b 7 days 0.30bc 0.10b 0.36bc 1.05b 0.02b 14 days 0.45b 0.09b 0.49b 0.91b 0.03b Numbers followed by the same letters in each column are not significantly different at 5% LSD Shoot and root dry weights of the weed species were markedly reduced by common sunflower leaves incorporated in the soil. The pattern of reduction in shoot and root dry weights of the weed test species was similar. The shorter the duration of incorporation in soil, the lower the shoot and root dry weights. As incorporation was prolonged for 7 and 14 days the greater the dry weight. Water purslane shoot and root lengths were completely inhibited (100%) by leaf residues incorporated at seeding. These studies show that leaves of common sunflower were more inhibitory to the weed test species than to the crop test species. 8
9 This result suggests that leaves of common sunflower were more inhibitory when freshly incorporated and that the inhibitory substances may have been altered during incorporation in soil. Narwal et al. (1999) reported that with delay in sowing of succeeding crops after sunflower harvest, the magnitude of inhibitory effect decreases. As in the germination tests, sunflower leaves incorporated in soil also inhibited shoot and root dry matter (DM) in seedlings of test crops. These results also indicate that there is some selectivity in the action of the inhibitory substances. Crop test species (rice and mungbean) were less sensitive to leaves incorporated in the soil than weed test species (itchgrass, barnyardgrass, and water purslane). Similar findings of Steinsiek et al. (1982), indicated that inhibition of weed seed germination and further seedling growth are dependent on the species tested (Kalita and Dey, 1998). These results parallel previous studies by Narwal et al. (1999b), who reported that soil with sunflower residues tested after harvest inhibited the germination of summer crops sown immediately (within 9 days) after incorporation. Incorporation of leaves in the soil reduced shoot and root dry weights of all test species. This may be due to the inhibitory effect of allelochemicals on mineral uptake and translocation (Glass, 1973). Sowing the test crops 36 days after incorporation, no inhibition was observed, rather germination was stimulated. It may be probable that during this period, toxic allelochemicals have been decomposed or transformed to non-toxic compounds. In a similar finding, Dharmaraj (1998a) reported that when cotton was sown between 3-8 weeks after leaf litter of sunflower incorporation, germination was not reduced but dry matter was increased. Bell and Koeppe (1972) found that oxygen uptake by excised corn roots was inhibited by more than 90% due to the reduced absorption and higher respiration rates. This led to the depletion of photosynthates used by the growing seedling. The overall effect was reduced growth and less dry mater accumulation by the indicator plants. The presence of allelopathic phytotoxins in the residues incorporated is a logical explanation for the growth reductions. One mechanism of toxic action on seedlings involves an interference with water balance. Such effects on water balance may result from the action of known allelochemicals like coumarin or phenolic acid derivatives. Stomata closure has been reported following applications of scopoletin and chlorogenic, 9
10 caffeic, p-coumaric, ferulic, and tannic acids (Einhellig and Kuan, 1971). Patterson (1981) reported that t-cinnamic, p-coumaric, vanillic, caffeic, ferulic, and gallic acids severely reduced photosynthetic rate in soybean (Glycine max [L.] Merr.). Reduction in photosynthesis was associated with reduced stomatal conductance. Soybean treated with caffeic, ferulic, and gallic acids also had a significant depression of leaf water potential. Phenols are common secondary plant metabolites involved in such phytotoxic activity, as they occur in higher concentrations in plant tissues and soil. The phenolic acids affect seed germination, radicle and plumule elongation and dry matter accumulation in many crop species (Gogoi et al., 2000). CONCLUSION Incorporation of common sunflower leaves in soil at seeding (0 day) reduced seed germination and seedling growth of all test species. Prolonging the duration of incorporation i.e. 14 days before seeding had less or no effect on germination, and shoot and root dry weight of the test species. The shorter the duration of incorporation of common sunflower leaves in the soil, the higher the inhibitory effect to the test plants. The leaf residues incorporated in the soil decreased germination and further growth of all test plant seedlings according to the duration of incorporation in the following order: 0 day (at seeding) > 7 days before seeding > 14 days before seeding. Results indicated that incorporated common sunflower leaves in the soil had inhibitory potential on water purslane and itchgrass, but less or no inhibition on rice and mungbean. It may be inferred that common sunflower leaves may be used for effective itchgrass and water purslane controls, without damaging mungbean and rice plants. 10
11 LITERATURE CITED ABEYSEKERA, S.K. M.M.A comparative study on agronomic characters and allelopathic activity of common sunflower (Helianthus annuus L.) and wild sunflower (Tithonia diversifolia (Herm SL.) Gray). MS Thesis. University of the Philippines at Los Baños. Philippines. 71p. BATISH, D.R., H.P. SINGH and R.K. KOHLI Allelopathy as a tool for sustainable weed management. The Proceeding of the 18 th Asian-Pacific Weed Science Society Conference. May 28- June 2, Beijing, P.R. China. pp BELL, D.T. and KOEPPE Non competitive effects of giant foxtail on growth of corn. Agron. J. 64: DHARMARAJ, G. 1998a. Allelopathic influence of sunflower on field crops. abstracts. Allelopathy Journal 6(1).pp.103. EINHELLIG, F.A. and L. KUAN Effects of scopoletin and chlorogenic acid on stomata aperture in tobacco and sunflower. Bull. Torrey Bot. Club 98 : GLASS, A.D.M Influence of phenolic acids on ion uptake. Plant Physiology 51: GOGOI, B., KAUSHIK DAS and K.K. BARUAH Effcet of allelochemicals on germination and seedling growth of rice (Oryza zativa L.) cultivars. Allelopathy Journal 7 (2): IRONS, M.S. and C.V. BURNSIDE Competitive and allelopathic effects of sunflower. Weed Science 30: KALITA, D., H. CHOUDHARY and S.C. DEY Assessment of allelopathic potential of some common upland rice weed species on morphophysiological properties of rice (Oryza sativa L.) plant. Crop research 17: KOEPPE, D. E., L. M. ROHRBAUGH, E. L. RICE and S.H. WENDER Tissue age and caffeoylquinic acid concentrations in sunflower, Phytochemistry 9: NARWAL, S.S., YADAVA, S. and S. GUPTA. 1999a. Allelopathic effects of sunflower on succeeding summer crops. 1. Field studies and bioassays. Allelopathy Journal 6: NARWAL, S.S., T. SINGH, J.S. HOODA and M.K. KATHURIA. 1999b. Allelopathic effects of sunflower on succeeding summer crops. 2. Pot culture and biomass decomposition. Allelopathy Journal 6: PATTERSON, D.T Effects of allelopathic chemicals on growth and physiological responses of soybean (Glycine max). Weed Sci. 29: RICE, E.L Allelopathy (second edition). Academic Press, Orlando. p In 11
12 SPRING, O. and A. HAGER Inhibition of elongation growth by two sesquiterpene lactones isolated from Helianthus annuus. Peredovick. Pergamon. Phytochemistry, 21 : STEINSIEK, J.W., L.R. OLIVER and F.C. COLLINS Allelopathic potential of wheat straw on selected weed species. Weed Science. 30:
ALLELOPATHY: NATURAL AND AN ENVIRONMENT-FRIENDLY UNIQUE TOOL FOR WEED CONTROL
ALLELOPATHY: NATURAL AND AN ENVIRONMENT-FRIENDLY UNIQUE TOOL Arpana Mishra* FOR WEED CONTROL Abstract: Allelopathy term refers to all biochemical interactions ( stimulatory and inhibitory) among plants,
More informationROLE OF THE ALLELOPATHY IN MIXED VEGETABLE CROPS IN THE ORGANIC FARMING
Abstract Scientific Papers. Series A. Agronomy, Vol. LVI, 2013 ISSN 2285-5785; ISSN CD-ROM 2285-5793; ISSN Online 2285-5807; ISSN-L 2285-5785 ROLE OF THE ALLELOPATHY IN MIXED VEGETABLE CROPS IN THE ORGANIC
More informationPreliminary phytoconstituents screening of some weeds and their potential toxicity on rice variety- Tarom via decomposition bioassay
2011 International Conference on Environmental, Biomedical and Biotechnology IPCBEE vol.16 (2011) (2011)IACSIT Press, Singapoore Preliminary phytoconstituents screening of some weeds and their potential
More informationALLELOPATHIC EFFECTS OF FIVE SELECTED WEED SPECIES ON SEED GERMINATION AND SEEDLING GROWTH OF CORN
J.Soil.Nature. 2 (2):13-18 (July 2008) ALLELOPATHIC EFFECTS OF FIVE SELECTED WEED SPECIES ON SEED GERMINATION AND SEEDLING GROWTH OF CORN M. A. SAMAD, M. M. RAHMAN 1, A. K. M. M. HOSSAIN 1, M. S. RAHMAN
More informationBy the end of this lesson, you should be able to
Allelopathy 1 Allelopathy By the end of this lesson, you should be able to define allelopathy explain the difference between allelopathy and competition identify the key interactions in allelopathy provide
More informationLABORATORY STUDIES ON THE ALLELOPATHIC POTENTIAL OF SORGHUM AND SUNFLOWER WATER EXTRACT AND POWDER AGAINST NARROW-LEAF SUMMER WEEDS
LABORATORY STUDIES ON THE ALLELOPATHIC POTENTIAL OF SORGHUM AND SUNFLOWER WATER EXTRACT AND POWDER AGAINST NARROW-LEAF SUMMER WEEDS Muhammad Nawaz Kandhro 1, Muhammad Ali Ansari 1, Ahmed Naqi 1, Muhammad
More informationComparative Influence of Water Soluble Phenolics of Warm Climate Aquatic Weeds on Weeds Species Composition and Rice-Wheat Cropping System.
Scientia Agriculturae www.pscipub.com/sa E-ISSN: 31-953X / P-ISSN: 311- DOI: 1.1519/PSCP.SA.15.1.3.1515 Sci. Agri. 1 (3), 15: 15-15 PSCI Publications Comparative Influence of Water Soluble Phenolics of
More informationEffect of Allelopathic weeds on Characteristics seed Growth in maize (Zea mays L. cv. KSC 704)
Advances in Environmental Biology, 6(1): 297-301, 2012 ISSN 1995-0756 297 This is a refereed journal and all articles are professionally screened and reviewed ORIGINAL ARTICLE Effect of Allelopathic weeds
More informationAllelopathic activity and movement of water leachate from Mexican sunflower [Tithonia diversifolia (Hemsl.) A. Gray] leaves in soil
Allelopathic activity and movement of water leachate from Mexican sunflower [Tithonia diversifolia (Hemsl.) A. Gray] leaves in soil Suthep Tongma*, Katsuichiro Kobayashi* and Kenji Usui* Abstract: Laboratory
More informationAllelopathic effect of aqueous extracts of major weed species plant parts on germination and growth of wheat
2013 Scienceweb Publishing Journal of Agricultural and Crop Research Vol. 1(3), pp. 30-35, September 2013 ISSN: 2384-731X Research Paper Allelopathic effect of aqueous extracts of major weed species plant
More informationSome changes in germination and morphological traits of black seed under different soil types and common bean densities
Journal of Biodiversity and Environmental Sciences (JBES) ISSN: 2220-6663 (Print) 2222-3045 (Online) Vol. 3, No. 5, p. 31-35, 2013 http://www.innspub.net RESEARCH PAPER OPEN ACCESS Some changes in germination
More informationBioscience Research Print ISSN: Online ISSN:
Available online freely at www.isisn.org Bioscience Research Print ISSN: 1811-9506 Online ISSN: 2218-3973 Journal by Innovative Scientific Information & Services Network RESEARCH ARTICLE BIOSCIENCE RESEARCH,
More informationALLELOPATHIC EFFECTS OF SORGHUM AND SUNFLOWER WATER EXTRACTS ON GERMINATION AND SEEDLING GROWTH OF RICE (ORYZA SATIVA L.) AND THREE WEED SPECIES
Mubeen et al., The Journal of Animal & Plant Sciences, 22(3): 2012, Page: J. 738-746 Anim. Plant Sci. 22(3):2012 ISSN: 1018-7081 ALLELOPATHIC EFFECTS OF SORGHUM AND SUNFLOWER WATER EXTRACTS ON GERMINATION
More informationAllelopathic Effects of Chromolaena Odorata L. (R. M. King and Robinson (Awolowo Plant )) Toxin on Tomatoes (Lycopersicum esculentum Mill)
All rights reserved J. Appl. Sci. Environ. Mgt. 2001 Allelopathic Effects of Chromolaena Odorata L. (R. M. King and Robinson (Awolowo Plant )) Toxin on Tomatoes (Lycopersicum esculentum Mill) ONWUGBUTA
More informationJournal of Agricultural Technology 2010 Vol. 6(3):
Journal of Agricultural Technology 2010 Vol. 6(3): 573-577 Journal of Agricultural Available online Technology http://www.ijat-rmutto.com 2010, Vol.6(3): 573-577 ISSN 1686-9141 Response of wheat (Triticum
More informationThe allelopathic effects of juglone containing nuts Abstract Allelopathy is the inhibition of the growth of
The allelopathic effects of juglone containing nuts Catherine Qin, Manavi Nagai, Whitney Hagins, and Reginald Hobbs* Department of Science AP Biology Lexington High School, 251 Waltham Street, Lexington,
More informationTropical Grasslands (1999) Volume 33,
Tropical Grasslands (1999) Volume 33, 122 126 122 Effects of leachates from swards of Bothriochloa pertusa and Urochloa mosambicensis on the growth of four test species, B. pertusa, U. mosambicensis, Stylosanthes
More informationRESEARCH ARTICLE INTRODUCTION
J.Natn.Sci.Foundation Sri Lanka 2015 43 (1): 57-64 DOI: http://dx.doi.org/10.4038/jnsfsr.v43i1.7915 RESEARCH ARTICLE Effect of incorporating the residues of Sri Lankan improved rice (Oryza sativa L.) varieties
More informationJournal of Biology and today's world 2013, volume 2, issue 5, pages: Study of the effects on the germination of weed
CNB Scholar Journals Available online: www.biology.cnbjournals.com Journal of Biology and today's world ISSN 2322-3308 Research Article Study of the effects on the germination of weed Sepideh Shayghan,
More informationInt. J. Biosci International Journal of Biosciences IJB
International Journal of Biosciences IJB ISSN: 2220-6655 (Print) 2222-5234 (Online) http://www.innspub.net Vol. 3, No. 3, p. 25-31, 2013 RESEARCH PAPER OPEN ACCESS Allelophatic effect of sunflower parts
More informationWeed Suppression by Buckwheat
98 Weed Suppression by Buckwheat Current Advances in Buckwheat Research (1995) : 693-697 Tohru Tominaga and Takako Uezu Faculty of Agriculture, Shinshu University, Ina, Nagano, Japan Abstract To clarify
More informationInstitute of Agricultural Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
Bangladesh J. Bot. 46(4): 00-00, 2017 (December) EFFECTS OF AQUOUS EXTRACTS OF SUNFLOWER (HELIANTHUS ANNUUS L.) ON GERMINATION AND SEEDLING GROWTH OF THE SELECTED WHEAT (TRITICUM AESTIVUM L.) VARIETIES
More informationAllelopathy in weeds and crops: myths and facts. Jed Colquhoun Department of Horticulture
Allelopathy in weeds and crops: myths and facts Jed Colquhoun Department of Horticulture Allelopathy in weeds and crops: outline What is allelopathy? Field observations of allelopathy Practical uses for
More informationEFFECT OF ALLELOPATHIC LEAF EXTRACT OF SOME SELECTED WEED FLORA OF AJMER DISTRICT ON SEED GERMINATION OF TRITICUM AESTIVUM L.
EFFECT OF ALLELOPATHIC LEAF EXTRACT OF SOME SELECTED WEED FLORA OF AJMER DISTRICT ON SEED GERMINATION OF TRITICUM AESTIVUM L. Gupta Ankita 1 and Mittal Chabbi 2 1 Research Scholar, Dept. of Botany, Govt.
More informationThis is a refereed journal and all articles are professionally screened and reviewed
Advances in Environmental Biology, 6(8): 2423-2427, 2012 ISSN 1995-0756 2423 This is a refereed journal and all articles are professionally screened and reviewed ORIGINAL ARTICLE Allelopathic Inhibition
More informationEffect of Parthenium hysterophorus L. on Germination and Elongation of Onion (Allium cepa) and Bean (Phaseolus vulgaris)
Research Journal of Chemical and Environmental Sciences Volume 1 Issue 2 (June 2013): 17-21 Available Online http://www.aelsindia.com/rjces.htm 2013 AELS, India Online ISSN 2321-1040 ORIGINAL ARTICLE Effect
More informationSecale cereale L. suppression by aqueous extracts of Glycine max
Available online at www.scholarsresearchlibrary.com Annals of Biological Research, 212, 3 (5):2282-2291 (http://scholarsresearchlibrary.com/archive.html) ISSN 976-1233 CODEN (USA): ABRNBW Secale cereale
More informationPhytotoxic potential of sugar beet (Beta vulgaris) and eucalyptus (Eucalyptus camaldulensis) to control purslane (Portulaca oleracea) weed
This article was downloaded by: [Ferdowsi University], [Alireza Dadkhah] On: 11 February 213, At: 7:36 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 172954
More informationEFFECT OF DIFFERENT WHEAT STRAW EXTRACTS ON GERMINATION AND GROWTH OF THREE DOMINANT WEED SPECIES
International Journal of Botany and Research (IJBR) ISSN 2277-4815 Vol. 3, Issue 2, Jun 2013, 71-78 TJPRC Pvt. Ltd. EFFECT OF DIFFERENT WHEAT STRAW EXTRACTS ON GERMINATION AND GROWTH OF THREE DOMINANT
More informationINVESTIGATIONS ON ALLELOPATHY IN A RED BEECH FOREST. S.R. JUNE Department of Botany, üniversity of Canterbury, Christchurch, New Zealand ABSTRACT
MAURI ORA, 1976 f 4: 87-91 87 INVESTIGATIONS ON ALLELOPATHY IN A RED BEECH FOREST S.R. JUNE Department of Botany, üniversity of Canterbury, Christchurch, New Zealand ABSTRACT The possibility that allelopathy
More informationWeed Competition and Interference
Weed Competition and Interference Definition two organisms need essential materials for growth and the one best suited for the environment will succeed (humans usually manipulate so that crops succeed)
More informationMulti-herbicidal effects of Lanta camara extracts on Eleucine indica and Amaranthus hybridus: implications to weed control in organic gardens
Multi-herbicidal effects of Lanta camara extracts on Eleucine indica and Amaranthus hybridus: implications to weed control in organic gardens 1 Mabasa Chiedza, 1 Rugare Joyful, 1 Mabasa Stanford and 2
More informationPHYTOTOXIC EFFECTS OF Eucalyptus globulus LEAF EXTRACT ON Solanum nigrum
South Western Journal of Vol.5, No.1, 2014 Horticulture, Biology and Environment P-Issn: 2067-9874, E-Issn: 2068-7958 pp. 43-53 PHYTOTOXIC EFFECTS OF Eucalyptus globulus LEAF EXTRACT ON Solanum nigrum
More informationA bioassay assessment of safflower allelopathy using equal compartment agar methods
Journal of AGROBIOLOGY J Agrobiol 30(2): 97 106, 2013 DOI 10.2478/agro-2013-0010 ISSN 1803-4403 (printed) ISSN 1804-2686 (on-line) http://joa.zf.jcu.cz; http://versita.com/science/agriculture/joa ORIGINAL
More informationAllelopathic effects of wheat and barley on emergence and seedling growth of some weed species
International Journal of Biosciences IJB ISSN: 2220-6655 (Print) 2222-5234 (Online) http://www.innspub.net Vol. 3, No. 1, p. 128-134, 2013 RESEARCH PAPER OPEN ACCESS Allelopathic effects of wheat and barley
More informationALLELOPATHIC EFFECTS OF MULTIPURPOSE TREE SPECIES Melia azedarach WITH EMPHASIS ON AGRICULTURAL CROPS
ISSN-997-7 (Online) J. Innov. Dev. Strategy ():7-77(April ) ALLELOPATHIC EFFECTS OF MULTIPURPOSE TREE SPECIES Melia azedarach WITH EMPHASIS ON AGRICULTURAL CROPS T. L. SHAPLA, R. PARVIN, M.H.A. AMIN AND
More informationINTERNATIONAL RESEARCH JOURNAL OF PHARMACY ISSN Research Article
R. Manonmani et al. IRJP 2012, 3 (6) INTERNATIONAL RESEARCH JOURNAL OF PHARMACY www.irjponline.com ISSN 2230 8407 Research Article ALLELOPATHIC EFFECTS OF WEED (Tridax procumbens L.) EXTRACT ON SEED GERMINATION
More informationEFFECTS OF THE ROOT DEBRIS OF Tithonia diversifolia ON THE GROWTH OF Zea mays IN SOUTH-WESTERN NIGERIA
EFFECTS OF THE ROOT DEBRIS OF Tithonia diversifolia ON THE GROWTH OF Zea mays IN SOUTH-WESTERN NIGERIA Ilori, O. J. Biology Department, Adeyemi College of Education, Ondo, Nigeria E-mail: olasupoilori@yahoo.com
More informationInt.J.Curr.Res.Aca.Rev.2016; 4(6): 16-21
Allelopathic Effects of (Sorghum bicolor L.) Extracts on Germination and Seeding Growth of (Triticum aestivum L.). M.S. AL- Juboory* and Walla M. AL- Juboory Department of Biology, College of Science,
More informationScholars Research Library
Available online at www.scholarsresearchlibrary.com Annals of Biological Research, 2013, 4 (5):188-195 (http://scholarsresearchlibrary.com/archive.html) ISSN 0976-1233 CODEN (USA): ABRNBW Evaluation the
More informationEffect of litter and leaf leachates of Dendrocalamus strictus on soybean and wheat crop under pot culture experimentation
J. Bamboo and Rattan, Vol. 15, Nos. 1-4, pp. 51-60 (2016) c KFRI 2016 Effect of litter and leaf leachates of Dendrocalamus strictus on soybean and wheat crop under pot culture experimentation S. Nema1
More informationAllelopathic Effects of Lantana (Lantana camara L.) Leaf Extracts on Germination and Early Growth of three Agricultural Crops in Ethiopia
Allelopathic Effects of Lantana (Lantana camara L.) Leaf Extracts on Germination and Early Growth of three Agricultural Crops in Ethiopia Desalegn Tadele Biology Department, P. O. Box 1817, Bahir Dar University,
More informationAllelopathic effect of four weed species extracts on germination, growth and protein in different varieties of Glycine max (L.) Merrill.
Journal of Environmental Biology July 2006, 27(3) 571-577 (2006) Triveni Enterprises, Lucknow (India) For personal use only Free paper downloaded from: www.jeb.co.in Commercial distribution of this copy
More informationALLELOPATHIC EFFECTS OF CELOSIA ARGENTEA L. ON SPERMOSPHERE MICROORGANISMS
Int. J. LifeSc. Bt & Pharm. Res. 2013 P Saritha and A Sreeramulu, 2013 Research Paper ISSN 2250-3137 www.ijlbpr.com Vol. 2, No. 1, January 2013 2013 IJLBPR. All Rights Reserved ALLELOPATHIC EFFECTS OF
More informationCOMMUNICATIONS IN PLANT SCIENCES
COMMUNICATIONS IN PLANT SCIENCES Differential influence of shoot extracts of winter cover crops on seed germination of corn, soybean and indicator plants Mirian Fracasso Fabiani 1, Leonardo Bianco de Carvalho
More informationStudy of Allelopathic Interactions of weeds on of Wheat (Triticum aestivum L.) and Moong (Vigna radiata) using Equal-Compartment-Agar Method (ECAM)
International Journal of Applied Agricultural Research ISSN 0973-2683 Volume 12, Number 2 (2017) pp. 247-254 Research India Publications http://www.ripublication.com Study of Allelopathic Interactions
More informationAllelopathic impact of Phragmites karka on seed germination and radical and plumule growth of wheat variety sirin-2007
Scholarly Journal of Agricultural Science Vol. 4(7), pp. 427-431 July, 2014 Available online at http:// www.scholarly-journals.com/sjas ISSN 2276-7118 2014 Scholarly-Journals Full Length Research Paper
More informationAllelopathic effects of redroot pigweed (Amaranthus retroflexus L.) root exudates on common bean seedling growth
International Research Journal of Applied and Basic Sciences. Vol., 3 (6), 1230-1234, 2012 Available online at http:// www. irjabs.com ISSN 2251-838X 2012 Allelopathic effects of redroot pigweed (Amaranthus
More informationDetermining the Influence of Temperature on Plants
Lesson C4 2 Determining the Influence of Temperature on Plants Unit C. Plant and Soil Science Problem Area 4. Environmental Factors Affecting Plant Growth Lesson 2. Determining the Influence of Temperature
More informationI. PLANT INTERACTION IN AGROECOSYSTEMS ALLELOPATHY
Plant Interactions in Agroecosystems Allelopathy. Page 1 of 5 I. PLANT INTERACTION IN AGROECOSYSTEMS ALLELOPATHY A. WHAT IS ALLELOPATHY 1. (AS DEFINED IN RICES' BOOK ON ALLELOPATHY): Allelopathy is the
More informationFlowers Seeds Pollination Germination
* Flowers Seeds Pollination Germination *In order for plants to be successful in many different environments they must be able to reproduce themselves. *The reproductive patterns of plants reflect the
More informationALLELOPATHIC AND CYTOTOXIC EFFECTS OF AQUEOUS EXTRACTS OF PARTHENIUM HYSTEROPHORUS ON CUCUMIS SATIVUS L. VAR. SAMBAR
ALLELOPATHIC AND CYTOTOXIC EFFECTS OF AQUEOUS EXTRACTS OF PARTHENIUM HYSTEROPHORUS ON CUCUMIS SATIVUS L. VAR. SAMBAR Hridya Mohanan and *Rajendiran K. Department of Botany, K.M. Centre for Post Graduate
More information15. PHOTOPERIODISM. 1. Short day plants
15. PHOTOPERIODISM Photoperiodism is the phenomenon of physiological changes that occur in plants in response to relative length of day and night (i.e. photoperiod). The response of the plants to the photoperiod,
More informationCommon allelochemicals in root exudates of Barnyardgrass (Echinochloa crusgalli L.) and inhibitory potential against rice (Oryza sativa) cultivars
International Research Journal of Applied and Basic Sciences. Vol., 3 (1), 11-17, 2012 Available online at http://www. irjabs.com ISSN 2251-838X 2012 Common allelochemicals in root exudates of Barnyardgrass
More informationAllelopathic Impact Of Certain Weeds On Oryza Sativa L.
Research Paper Volume 3 Issue 3 November 2015 International Journal of Informative & Futuristic Research Allelopathic Impact Of Certain Weeds On Paper ID IJIFR/ V3/ E3/ 060 Page No. 1055-1062 Subject Area
More informationPlant Growth Regulators(NCERT)
Plant Growth Regulators(NCERT) Promoters: 1. Auxins: -first isolated from urine, contains Zinc. -Natural: Indole Acetic Acid (IAA) Indole Butyric Acid (IBA) -Synthetic: Naphthalene Acetic Acid (NAA) 2-4
More informationA Level. A Level Biology. AQA, OCR, Edexcel. Photosynthesis, Respiration Succession and Nutrient Cycle Questions. Name: Total Marks: Page 1
AQA, OCR, Edexcel A Level A Level Biology Photosynthesis, Respiration Succession and Nutrient Cycle Questions Name: Total Marks: Page 1 Q1. The diagram shows the energy flow through a freshwater ecosystem.
More informationSCREENING METHODS FOR EVALUATING THE ALLELOPATHIC POTENTIAL OF WHEAT AND TRITICALE GENOTYPES
Scientific Papers. Series A. Agronomy, Vol. LX, 2017 ISSN 2285-5785; ISSN CD-ROM 2285-5793; ISSN Online 2285-5807; ISSN-L 2285-5785 SCREENING METHODS FOR EVALUATING THE ALLELOPATHIC POTENTIAL OF WHEAT
More informationReceived: 5 th May-2014 Revised: 26 th May-2014 Accepted: 7 th June-2014 Research article
Received: 5 th May-2014 Revised: 26 th May-2014 Accepted: 7 th June-2014 Research article ALLELOPATHIC EFFECTS OF EXTRACTS FROM TWO GROWTH STAGES OF WHEAT O WILD MUSTARD GERMIATIO CHARACTERISTICS Azar
More informationR E S E A R C H A R T I C L E. Efficacy of Azadirachta indica leaf, stem and bark extracts on seedling related traits of Phaseolus vulgaris L.
AN INTERNATIONAL QUARTERLY JOURNAL OF BIOLOGY & LIFE SCIENCES B I O L I F E 3(1):7-11 ISSN (online): 2320-4257 www.biolifejournal.com R E S E A R C H A R T I C L E Efficacy of Azadirachta indica leaf,
More informationKeywords: barley, weeds, allelopathic components, varieties, culture time, density, Equal-Compartment-Agar method.
ALLELOPATHIC INTERACTIONS BETWEEN TWO BARLEY CULTIVARS (Hordeum vulgare L.) ON WEED ANNUAL RYEGRASS (Lolium multiflorum L.) AND CHARLOCK (Sinapis arvensis L.) USING THE EQUAL-COMPARTMENT-AGAR-METHOD Mohammad
More informationC.v. Dr. Mohammed Ali Hussein
C.v. Dr. Mohammed Ali Hussein - Dr Mohammed Ali Hussien Al- Falahe Email: dr.mohammed1953@yahoo.com Tele : 07507718671. - Was born in Baghdad Iraq 1953. - Graduated from Al-Nasar primary school in 1966.
More information2017 Vol. 23 No. 2 PP ISSN (Print)
1 FLORA AND FAUNA ISSN 2456-9364 (Online) 2017 Vol. 23 No. 2 PP 341-349 ISSN 0971-6920 (Print) ALLELOPATHIC EFFECTS OF PARTHENIUM HYSTEROPHORUS ON SEED GERMINATION AND SEEDLING GROWTH IN CAJANUS CAJAN
More informationALLELOPATHIC EFFECTS OF RICE STRAW EXTRACT ON DIFFERENT CROPS AND WEEDS
ALLELOPATHIC EFFECTS OF RICE STRAW EXTRACT ON DIFFERENT CROPS AND WEEDS Riaz Ahmad Afridi 1, 2, Muhammad Azim Khan 2, Zahid Hussain 2, Sarwat Saleem 4, Shitab Khan 1, Khilwat Afridi 5 and Muhammad Ali
More informationEFFECTS OF DIFFERENT DOSES OF GLYCINE BETAINE AND TIME OF SPRAY APPLICATION ON YIELD OF COTTON (GOSSYPIUM HIRSUTUM L.)
Journal of Research (Science), Bahauddin Zakariya University, Multan, Pakistan. Vol.17, No.4, October 2006, pp. 241-245 ISSN 1021-1012 EFFECTS OF DIFFERENT DOSES OF GLYCINE BETAINE AND TIME OF SPRAY APPLICATION
More informationEffect of Moisture Stress on Key Physiological Parameters in Sunflower Genotypes
International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 6 Number 5 (2017) pp. 147-159 Journal homepage: http://www.ijcmas.com Original Research Article https://doi.org/10.20546/ijcmas.2017.605.018
More informationAllelopathy of Barnyardgrass (Echinochloa crux-galli L. Beauv. var. crux-galli)
Weed Research, Japan Vol. 37 (2) 146-152 (1992) Report Allelopathy of Barnyardgrass (Echinochloa crux-galli L. Beauv. var. crux-galli) Hai-Hang Li*, Mimako Urashima*, Midori Amano*, Labunmi Lajide*, Hiroyuki
More informationWater use efficiency in agriculture
Water use efficiency in agriculture Bill Davies The Lancaster Environment Centre, UK Summary Introduction and definitions Impacts of stomata, environment and leaf metabolism on WUE Estimating WUE and modifications
More informationDrought Tolerant Criterion of Wheat Genotypes Using Carbon Isotopes Discrimination Technique
Journal of Earth Science and Engineering 5 (2015) 256-261 doi: 10.17265/2159-581X/2015. 01. 005 D DAVID PUBLISHING Drought Tolerant Criterion of Wheat Genotypes Using Carbon Isotopes Discrimination Technique
More informationF D Reviewed 1995 P.M. ANDERSON, E.A. OELKE AND S.R. SIMMONS MINNESOTA EXTENSION SERVICE UNIVERSITY OF MINNESOTA COLLEGE OF AGRICULTURE
F0-2548-D Reviewed 15 P.M. ANDERSON, E.A. OELKE AND S.R. SIMMONS MINNESOTA EXTENSION SERVICE UNIVERSITY OF MINNESOTA COLLEGE OF AGRICULTURE GROWTH AND DEVELOPMENT GUIDE FOR P.M. Anderson, E.A. Oelke, and
More informationEFFECT OF BANANA PLANT EXTRACTS ON GERMINATION AND SEEDLING GROWTH OF SOME VEGETABLE CROPS
Bangladesh j. crop sci. 2006, 17 (1): 235-242 EFFECT OF BANANA PLANT EXTRACTS ON GERMINATION AND SEEDLING GROWTH OF SOME VEGETABLE CROPS S. Roy, M. Asaduzzaman, M.H.R. Pramanik and A. K. M. A. Prodhan
More informationSeed Development and Yield Components. Thomas G Chastain CROP 460/560 Seed Production
Seed Development and Yield Components Thomas G Chastain CROP 460/560 Seed Production The Seed The zygote develops into the embryo which contains a shoot (covered by the coleoptile) and a root (radicle).
More informationEFFECTS OF SEED SIZE AND EMERGENCE TIME ON SUBSEQUENT GROWTH OF PERENNIAL RYEGRASS
Phytol (980) 84, 33-38 EFFECTS OF SEED SIZE AND EMERGENCE TIME ON SUBSEQUENT GROWTH OF PERENNIAL RYEGRASS BY ROBERT E. L. NAYLOR School of Agriculture, The University, Aberdeen {Accepted 2 January 979)
More informationAllelopathic effect of Azadirachta indica L. on the germination of Abelmoschus esculentus L.
International Letters of Natural Sciences Online: 2014-05-13 ISSN: 2300-9675, Vol. 15, pp 13-22 doi:10.18052/www.scipress.com/ilns.15.13 2014 SciPress Ltd., Switzerland Allelopathic effect of Azadirachta
More informationRelationship between Leaf Water Potential and Photosynthesis in Rice Plants
Relationship between Leaf Water Potential and Photosynthesis in Rice Plants By KUNI ISHIHARA and HIDEO SAITO Faculty of Agriculture, Tokyo University of Agriculture and Technology (Saiwaicho,Fuchu, Tokyo,
More informationWeed management through combined application of allelopathic crop water leachates and reduced doses of herbicide in cotton (Gossypium hirsutum L.
International Journal of Agronomy and Agricultural Research (IJAAR) ISSN: 2223-7054 (Print) 2225-3610 (Online) http://www.innspub.net Vol. 4, No. 3, p. 27-34, 2014 RESEARCH PAPER OPEN ACCESS Weed management
More informationALLELOPATHIC INFLUENCE OF RICE EXTRACTS ON PHENOLOGY OF VARIOUS CROPS AND WEEDS
Pak. J. Bot., 46(4): 1211-1215, 2014. ALLELOPATHIC INFLUENCE OF RICE EXTRACTS ON PHENOLOGY OF VARIOUS CROPS AND WEEDS RIAZ AHMAD AFRIDI 1, MUHAMMAD AZIM KHAN 2*, HASINA GUL 1 AND MUHAMMAD DAUD KHAN 3 1
More informationInhibitory Impact of Some Crop Plants Extracts on Germination and Growth of Wheat
American-Eurasian J. Agric. & Environ. Sci., 9 (1): 47-51, 2010 ISSN 1818-6769 IDOSI Publications, 2010 Inhibitory Impact of Some Crop Plants Extracts on Germination and Growth of Wheat 1 2 Mehdi Panahyan-e-Kivi,
More informationTREES. Functions, structure, physiology
TREES Functions, structure, physiology Trees in Agroecosystems - 1 Microclimate effects lower soil temperature alter soil moisture reduce temperature fluctuations Maintain or increase soil fertility biological
More informationThe performance of Amaranthus cruentus and Celosia argentea as affected by varying sowing depths
AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA ISSN Print: 2151-7517, ISSN Online: 2151-7525, doi:10.5251/abjna.2010.1.6.1162.1168 2010, ScienceHuβ, http://www.scihub.org/abjna The performance of Amaranthus
More informationNumerical Data. Effect of copper on nutrients content (mg g 1 dry wt.) of radish (45th day) N P K Na Ca Mg
Numerical Data Effect of copper on nutrients (mg g 1 dry wt.) of radish (45th day) Copper added in the soil N P K Na Ca Mg (mg kg 1 ) Control 32.66 6.31 43.52 1.70 13.56 3.99 50 37.35(+14.36) 6.97(+10.45)
More informationRussell W. Wallace. Student. California State University. Fresno. CA Floyd 0. Colbert. Research Scientist. Lilly Research Laboratories. Fresno.
YELLOW FOXTAIL LIFE CYCLE AND GERMINATION parential IN AN E..')TABLISIlliD ALFAl.fA liay ENVIRONMEN"f Russell W. Wallace. Student. California State University. Fresno. CA Floyd 0. Colbert. Research Scientist.
More informationAllelopathic Effect of Aqueous Root Bark Extract of Tamarindus indica L. and Rhizosphere Soil on Germination and Seedling Growth of Oryza sativa L.
ISSN: 2319-7706 Volume 3 Number 3 (2014) pp. 505-514 http://www.ijcmas.com Original Research Article Allelopathic Effect of Aqueous Root Bark Extract of Tamarindus indica L. and Rhizosphere Soil on Germination
More informationIdentifying Wheat Growth Stages
AGR-224 Identifying Wheat Growth Stages Carrie A. Knott, Plant and Soil Sciences University of Kentucky College of Agriculture, Food and Environment Cooperative Extension Service Identifying growth stages
More informationnobilis L.) and Its Main Components on the Germination of Some Weed and Crop Species
Inhibitory Effects of Laurel (Laurus nobilis L.) and Its Main Components on the Germination of Some Weed and Crop Species R. CETINTS, N. TURSUN,.. ISIKER,. KRCİ M. H. LM, and M. SEYİTHNO THNOĞLU Faculty
More informationEFFECTS OF BENLATE SYSTEMIC FUNGICIDE ON SEED GERMINATION, SEEDLING GROWTH, BIOMASS AND PHENOLIC CONTENTS IN TWO CULTIVARS OF ZEA MAYS L.
Pak. J. Bot., 36(3): 577-582, 2004. EFFECTS OF BENLATE SYSTEMIC FUNGICIDE ON SEED GERMINATION, SEEDLING GROWTH, BIOMASS AND PHENOLIC CONTENTS IN TWO CULTIVARS OF ZEA MAYS L. ZAMIN SHAHEED SIDDIQUI AND
More informationReceived: Apr 10, 2017; Accepted: May 04, 2017; Published: Jun 01, 2017; Paper Id.: IJASRJUN201744
International Journal of Agricultural Science and Research (IJASR) ISSN(P): 2250-0057; ISSN(E): 2321-0087 Vol. 7, Issue 3, Jun 2017, 343-348 TJPRC Pvt. Ltd. ALLELOPATHIC EFFECTS OF VARIOUS TREE LEAVES
More informationAUTOTOXIC COMPOUNDS FROM FRESH ALFALFA LEAF EXTRACTS: IDENTIFICATION AND BIOLOGICAL ACTIVITY
Journal of Chemical Ecology, Vol. 26, No. 1, 2000 AUTOTOXIC COMPOUNDS FROM FRESH ALFALFA LEAF EXTRACTS: IDENTIFICATION AND BIOLOGICAL ACTIVITY ILL-MIN CHUNG, 1, * DAVID SEIGLER, 2 DARRELL A. MILLER, 3
More informationStudy on Purple Nutsedge (Cyperus rotundus) Tuber Dormancy and its Control Through Combined Application of Growth Regulator and Herbicides
Research Article Study on Purple Nutsedge (Cyperus rotundus) Tuber Dormancy and its Control Through Combined Application of Growth Regulator and Herbicides D. Ravisankar* and C. R. Chinnamuthu Department
More informationDynamics of release of allelochemical compounds from roots of wild oat (Avena fatua L.)
Agrochimica, Vol. LVI - N. 3 may-june 2012 Dynamics of release of allelochemical compounds from roots of wild oat (Avena fatua L.) A. Iannucci *, M. Fragasso, C. Platani, A. Narducci, V. Miullo, R. Papa
More informationChapter VI: SUMMARY AND CONCLUSIONS
Chapter VI: SUMMARY AND CONCLUSIONS Chapter VI: SUMMARY AND CONCLUSIONS The thesis gives an account of the phytochemical analysis and mosquito repellent activity studies in some medicinally important plants
More informationCorresponding author: Babak Delnavaz Hashemloyahn
International Journal of Farming and Allied Sciences Available online at www.ijfas.com 2016 IJFAS Journal-2016-5-7/509-515/ 31 Dec, 2016 ISSN 2322-4134 2016 IJFAS The Effects of different liquid extract
More informationEffect of diazotrophs on the mineralization of organic nitrogen in the rhizosphere soils of rice (Oryza sativa)
Journal of Crop and Weed 3(1) : 47-51 (7) Effect of diazotrophs on the mineralization of organic nitrogen in the rhizosphere soils of rice (Oryza sativa) A. C. DAS AND D. SAHA Department of Agricultural
More informationEvaluation of allelopathic potential of Iranian wheat (Triticum aestivum L.) cultivars against weeds
AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA ISSN Print: 2151-7517, ISSN Online: 2151-7525 2010, ScienceHuβ, http://www.scihub.org/abjna Evaluation of allelopathic potential of Iranian wheat (Triticum
More informationMATHEMATICAL MODELING OF ALLELOPATHY: BIOLOGICAL RESPONSE TO ALLELOCHEMICALS AND ITS INTERPRETATION
Journal of Chemical Ecology, Vol. 19, No. 10, 1993 MATHEMATICAL MODELING OF ALLELOPATHY: BIOLOGICAL RESPONSE TO ALLELOCHEMICALS AND ITS INTERPRETATION M. AN, 1"* I.R. JOHNSON, 2 and J.V. LOVETT 2 Centre
More informationWeed biology and growth analysis of Celosia argentea L., a weed associated with groundnut and finger millet crops in southern India
http://agrobiol.sggw.waw.pl/cbcs Communications in Biometry and Crop Science Vol. 3, No. 2, 2008, pp. 80 87 International Journal of the Faculty of Agriculture and Biology, Warsaw University of Life Sciences,
More informationBiology and management of dodder a new threat to the canola industry
Biology and management of dodder a new threat to the canola industry Abul Hashem Department of Agriculture and Food Western Australia Centre for Cropping Systems P.O. Box 483, Northam WA 641, Australia
More informationJaved Kamal* and Asghari Bano. Department of Plant Sciences, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, Pakistan.
African Journal of Biotechnology Vol. 7 (18), pp. 3261-3265, 17 September, 2008 Available online at http://www.academicjournals.org/ajb ISSN 1684 5315 2008 Academic Journals Full Length Research Paper
More informationPlant Development. Chapter 31 Part 1
Plant Development Chapter 31 Part 1 Impacts, Issues Foolish Seedlings, Gorgeous Grapes Gibberellin and other plant hormones control the growth and development of plants environmental cues influence hormone
More informationAllelopathic effect of Ricinus communis L. and Vitex negundo L. on morphological attributes of invasive alien weed: Cassia uniflora Mill
ISSN 2455-4499; Vol.03, Issue 03 (2016) Institute of Research Advances http://research-advances.org/index.php/irajas Allelopathic effect of Ricinus communis L. and Vitex negundo L. on morphological attributes
More information