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 11901 PhoneNumber: 631-727-3595 Email: afs2@cornell.edu Trial: 2009 NY Protocol #: 09-013 ProjectTitle: Efficacy for Broadleaf Weeds (Bittercress, Oxalis, Spurge) PR# Research Target Crop/Plant Product EPA Reg. # Production Site Status 28920 Bittercress Casoron G 00-168 Greenhouse C Cardamine hirsuta Dichlobenil Chemtura 28923 Spurge Euphorbia sp. Casoron G Dichlobenil 00-168 Chemtura Greenhouse C 28927 Oxalis Oxalis sp. Casoron G Dichlobenil 00-168 Chemtura Greenhouse C
Project Title: Efficacy of Certain Herbicides for Early Post-emergent Broadleaf Weeds Protocol #: Ornamental Protocol Number 09-013 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
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 1 2 1 2 1 2 Untreated ~ at seed 0 0 0 0 0 0 0 0 0 Casoron G 1.0 at seed 10 0 1 15 0 0 0 0 Casoron G 2.0 at seed 8 10 10 8 20 8 0 0 10 Casoron 1.CS 1.0 at seed 5 20 18 10 5 38 0 3 25 Untreated ~ cot- 1-lf 0 0 0 0 0 0 0 0 0 Casoron G 1.0 cot- 1-lf 0 20 0 3 20 3 0 0 3 Casoron G 2.0 cot- 1-lf 0 15 5 15 3 20 0 15 5 Untreated ~ 2 to -lf 0 0 0 0 0 0 ~ ~ 0 Casoron G 1.0 2 to -lf 73 3 15 88 38 18 ~ ~ 8 Casoron G 2.0 2 to -lf 78 35 20 93 63 50 ~ ~ 3 Casoron 1.CS 1.0 2 to -lf 100 60 55 100 85 78 ~ ~ 70 2 of 6
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 20-20-20 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
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 8/6 @sd 1 unt 0 0 0 0 0 0 0 0 0 @sd 2 unt 0 0 0 0 0 0 0 0 0 @sd 3 unt 0 0 0 0 0 0 0 0 0 @sd unt 0 0 0 0 0 0 0 0 0 cot1 1 unt 0 0 0 0 0 0 0 0 0 cot1 2 unt 0 0 0 0 0 0 0 0 0 cot1 3 unt 0 0 0 0 0 0 0 0 0 cot1 unt 0 0 0 0 0 0 0 0 0 2-1 unt 0 0 0 0 0 0 0 2-2 unt 0 0 0 0 0 0 0 2-3 unt 0 0 0 0 0 0 0 2- unt 0 0 0 0 0 0 0 @sd 1 cas lo 0 10 0 5 30 0 0 0 0 @sd 2 cas lo 10 10 0 0 10 0 0 0 0 @sd 3 cas lo 5 10 0 0 10 0 0 0 0 @sd cas lo 0 10 0 0 10 0 0 0 0 cot1 1 cas lo 0 0 0 10 10 0 0 0 0 cot1 2 cas lo 0 20 0 0 30 0 0 0 10 cot1 3 cas lo 0 30 0 0 10 0 0 0 0 2-1 cas lo 100 50 0 50 50 30 0 2-2 cas lo 70 50 0 100 0 10 50 2-3 cas lo 70 30 0 100 30 10 70 2- cas lo 50 0 20 100 30 20 70 @sd 1 cas hi 5 20 0 10 20 0 0 0 0 @sd 2 cas hi 10 0 0 10 10 0 0 0 0 @sd 3 cas hi 5 0 0 0 10 0 0 0 0 @sd cas hi 10 20 0 10 0 30 0 0 0 cot1 1 cas hi 0 10 0 30 0 0 0 0 0 of 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 0 20 20 10 30 0 0 30 20 cot1 3 cas hi 0 0 0 10 30 0 0 30 0 cot1 cas hi 0 30 0 10 70 80 0 0 0 cot1 cas lo 0 30 0 0 30 10 0 0 0 2-1 cas hi 100 60 30 70 70 50 0 2-2 cas hi 70 50 0 100 70 50 80 2-3 cas hi 70 0 30 100 30 10 0 2- cas hi 70 30 20 100 80 90 90 @sd 1 cas cs 5 10 0 0 30 30 0 0 50 @sd 2 cas cs 15 20 0 10 0 30 0 10 50 @sd 3 cas cs 0 20 30 20 70 60 0 0 0 @sd cas cs 0 30 0 10 0 30 0 0 0 2-1 cas cs 100 50 60 100 90 80 70 2-2 cas cs 100 70 70 100 90 70 70 2-3 cas cs 100 60 60 100 70 70 70 2- cas cs 100 60 30 100 90 90 70 5 of 6
Treatment Rate lb/a a.i. Timing PERCENT CONTROL Bittercress Yellow Woodsorrel Spruge 1 2 1 2 1 2 Untreated ~ at seed 0 0 0 0 0 0 0 0 0 Broadstar 0.19 at seed 1 3 0 1 30 3 28 53 83 Broadstar 0.375 at seed 6 3 0 20 33 8 13 28 58 Certainty 0.035 at seed 6 68 73 5 55 70 0 23 63 Certainty 0.09 at seed 10 70 78 10 50 70 0 23 58 Casoron G 1.0 at seed 10 0 1 15 0 0 0 0 Casoron G 2.0 at seed 8 10 10 8 20 8 0 0 10 Casoron 1.CS 1.0 at seed 5 20 18 10 5 38 0 3 25 HGH-63 2.0 at seed 6 8 33 8 58 20 18 25 55 Tower 0.97 at seed 6 10 0 0 5 10 5 18 53 Tower 1.9 at seed 10 20 15 63 68 3 70 73 88 V-1012 0.38 at seed 3 63 63 0 53 63 0 0 63 V-1012 0.75 at seed 6 65 78 0 3 63 3 58 73 Untreated ~ cotyl to 1-lf 0 0 0 0 0 0 0 0 0 Broadstar 0.19 cotyl to 1-lf 5 20 13 13 50 38 5 15 8 Broadstar 0.375 cotyl to 1-lf 10 73 78 25 53 53 33 3 80 Certainty 0.035 cotyl to 1-lf 1 65 88 5 50 70 13 33 78 Certainty 0.09 cotyl to 1-lf 3 75 93 13 58 73 8 18 68 Casoron G 1.0 cotyl to 1-lf 0 20 0 3 20 3 0 0 3 Casoron G 2.0 cotyl to 1-lf 0 15 5 15 3 20 0 15 5 HGH-63 2.0 cotyl to 1-lf 10 75 78 20 70 83 18 15 65 Tower 0.97 cotyl to 1-lf 0 5 33 20 8 35 13 13 60 Tower 1.9 cotyl to 1-lf 10 5 65 33 58 50 38 0 93 V-1012 0.38 cotyl to 1-lf 1 58 90 8 8 58 13 28 8 V-1012 0.75 cotyl to 1-lf 8 80 100 18 65 80 38 0 73 Untreated ~ 2 to -lf 0 0 0 0 0 0 ~ ~ 0 Broadstar 0.19 2 to -lf 50 65 3 78 53 8 ~ ~ 50 Broadstar 0.375 2 to -lf 71 65 8 85 85 60 ~ ~ 65 Certainty 0.035 2 to -lf 30 35 53 93 78 68 ~ ~ 68 Certainty 0.09 2 to -lf 60 50 60 93 78 80 ~ ~ 83 Casoron G 1.0 2 to -lf 73 3 15 88 38 18 ~ ~ 8 Casoron G 2.0 2 to -lf 78 35 20 93 63 50 ~ ~ 3 Casoron 1.0 2 to -lf 100 60 55 100 85 78 ~ ~ 70 HGH-63 2.0 2 to -lf 15 33 20 35 5 8 ~ ~ 83 Tower 0.97 2 to -lf 23 38 53 75 38 8 ~ ~ 85 Tower 1.9 2 to -lf 79 3 53 93 5 63 ~ ~ 95 V-1012 0.38 2 to -lf 28 5 55 78 70 70 ~ ~ 70 V-1012 0.75 2 to -lf 8 8 60 78 80 78 ~ ~ 80 Fisher's LSD @ 0.05 13 18 20 19 17 21 26 26 29 6 of 6