IR-4 Ornamental Horticulture Program Research Report Cover Sheet

Transcription

1 Research Report Cover Sheet Researcher(s) Andy Senesac Affiliation: Cornell Coop. Ext of Suffolk Co. Cornell Cooperative Extension, L.I. Res 3059 Sound Ave. Riverhead NY PhoneNumber: Trial: 2009 NY Protocol #: ProjectTitle: Efficacy for Broadleaf Weeds (Bittercress, Oxalis, Spurge) PR# Research Target Crop/Plant Product EPA Reg. # Production Site Status Bittercress Casoron G Greenhouse C Cardamine hirsuta Dichlobenil Chemtura Spurge Euphorbia sp. Casoron G Dichlobenil Chemtura Greenhouse C Oxalis Oxalis sp. Casoron G Dichlobenil Chemtura Greenhouse C

2 Project Title: Efficacy of Certain Herbicides for Early Post-emergent Broadleaf Weeds Protocol #: Ornamental Protocol Number BROADSTARError! Narrative Summary (Results/Discussion) Please keep text to one page if possible. Include summary of trial results and a brief discussion. Results for multiple PRnumbers can be summarized together, but please list all PRNumbers in the footer and in the summary data table. Several herbicides were applied to weed seedlings at three stages. All applications were made on July 10, 2009 which was 22 days after the first seeding (when plants were at the 2 to leaf stage), 15 days after the second seeding (when plants were at the cotyledon to 1 leaf stage), and on the day of treatment (seeded onto treated substrate). An untreated control was also seeded at each timing. Weed species included Cardamine hirsuta (hairy bittercress), Oxalis stricta (yellow woodsorrel), and Chamaesyce humistrata (prostrate spurge). Visual percent control data was collected at one, two, and four weeks after treatment. Many treatments were effective, yielding fifty to one hundred percent control by the fourth week after treatment. 1 of 6

3 Results Table Please insert results table here. Include PRnumbers for each treatment if multiple PRnumbers are included in this summary. Please include statistics. PERCENT CONTROL Rate Bittercress Yellow Woodsorrel Spruge Treatment lb/a AI Timing Untreated ~ at seed Casoron G 1.0 at seed Casoron G 2.0 at seed Casoron 1.CS 1.0 at seed Untreated ~ cot- 1-lf Casoron G 1.0 cot- 1-lf Casoron G 2.0 cot- 1-lf Untreated ~ 2 to -lf ~ ~ 0 Casoron G to -lf ~ ~ 8 Casoron G to -lf ~ ~ 3 Casoron 1.CS to -lf ~ ~ 70 2 of 6

4 Materials & Methods/Recordkeeping Please fill out the information below or attach a separate document with comparable information. Crop History Crop Cultivar/Variety: Cardamine hirsuta (CARHI), Oailxs stricta (OXAST), Chamaesyce humistrata (EPHHT) Date of Seeding: 2- leaf: 6/18/09, cotyledon-1 leaf:6/25/09, at seed: 7/10/09 Date of Emergence: (Approx. days after seed) Cardamine:, Oxalis: 5, Chamaesyce 7 Date of Transplanting: Potting Mix: Pot size & spacing: Row spacing: na Soiless peat, perlite, vermiculite mix nursery pots as needed Product(s) applied prior to start of experiment: Product Rate Application Type na Date of Application Crop Growth Stage Application Volume Add more rows as needed. Experiment Information Experimental Design: Number of Reps: Application Equipment: Materials & Methods: RCB Manual Shaker, CO2 Back Pack Sprayer soluable fertilizer delivered through irrigation Insert materials & methods here only if information is not requested elsewhere. Product(s) applied during experiment (including treatments, fertilizers, etc): Product Rate(s) Applicati Date of Application Crop Growth Stage Application on Type lb/a AI Volume Casoron G 1.0, 2.0 OTT 7/10/09 at seeding na Casoron G 1.0, 2.0 OTT 7/10/09 cotyledon to 1-leaf stage na Casoron G 1.0, 2.0 OTT 7/10/09 2 to -leaf stage na Casoron 1.CS 1.0 OTT 7/10/09 at seeding 30 GPA Casoron 1.CS 1.0 OTT 7/10/09 2 to -leaf stage 30 GPA Add more rows as needed. 3 of 6

5 Environmental conditions during the experiment Insert temperature, precipitation, relative humidity and other pertinent environmental conditions or send separate file with this information. Trial maintained in greenhouse under mist irrigation during daylight hours. No temperature controls were in place. Data Collected Please describe data collected and scoring system. Also include the dates data were collected. Data: Percent control based on visual observations. Data collected at 1, 2, and. Dates: 7/16, 7/23, 8/6/09 Raw Data Insert raw data below or send separate file containing raw data. PERCENT CONTROL Tim Rep Chem bc 7/16 bc 7/23 bc 8/6 ox 7/16 ox 7/23 ox 8/6 spg 7/16 spg 7/23 spg 1 unt unt unt unt cot1 1 unt cot1 2 unt cot1 3 unt cot1 unt unt unt unt unt cas lo cas lo cas lo cas lo cot1 1 cas lo cot1 2 cas lo cot1 3 cas lo cas lo cas lo cas lo cas lo cas hi cas hi cas hi cas hi cot1 1 cas hi of 6

6 PERCENT CONTROL IR- Ornamental Horticulture Program Tim Rep Chem bc 7/16 bc 7/23 bc 8/6 ox 7/16 ox 7/23 ox 8/6 spg 7/16 spg 7/23 spg 8/6 cot1 2 cas hi cot1 3 cas hi cot1 cas hi cot1 cas lo cas hi cas hi cas hi cas hi cas cs cas cs cas cs cas cs cas cs cas cs cas cs cas cs of 6

7 Treatment Rate lb/a a.i. Timing PERCENT CONTROL Bittercress Yellow Woodsorrel Spruge Untreated ~ at seed Broadstar 0.19 at seed Broadstar at seed Certainty at seed Certainty 0.09 at seed Casoron G 1.0 at seed Casoron G 2.0 at seed Casoron 1.CS 1.0 at seed HGH at seed Tower 0.97 at seed Tower 1.9 at seed V at seed V at seed Untreated ~ cotyl to 1-lf Broadstar 0.19 cotyl to 1-lf Broadstar cotyl to 1-lf Certainty cotyl to 1-lf Certainty 0.09 cotyl to 1-lf Casoron G 1.0 cotyl to 1-lf Casoron G 2.0 cotyl to 1-lf HGH cotyl to 1-lf Tower 0.97 cotyl to 1-lf Tower 1.9 cotyl to 1-lf V cotyl to 1-lf V cotyl to 1-lf Untreated ~ 2 to -lf ~ ~ 0 Broadstar to -lf ~ ~ 50 Broadstar to -lf ~ ~ 65 Certainty to -lf ~ ~ 68 Certainty to -lf ~ ~ 83 Casoron G to -lf ~ ~ 8 Casoron G to -lf ~ ~ 3 Casoron to -lf ~ ~ 70 HGH to -lf ~ ~ 83 Tower to -lf ~ ~ 85 Tower to -lf ~ ~ 95 V to -lf ~ ~ 70 V to -lf ~ ~ 80 Fisher's of 6