IR-4 Ornamental Horticulture Program Research Report Cover Sheet

Transcription

1 b.pdf IR-4 Ornamental Horticulture Program Research Report Cover Sheet Researcher(s) John/Todd Ahrens/Mer Affiliation: Connecticut Agricultural Experiment St 153 Cook Hill Road P.O. Box 248 Windsor CT PhoneNumber: Trial: 2010 CT ProjectTitle: Mesotrione Crop Safety Protocol #: PR# Research Target Crop/Plant Product EPA Reg. # Production Site Status Phytotoxicity Fir, Fraser Mesotrione 4SC - Field In-Ground C Phytotoxicity Abies fraseri Mesotrione Syngenta Phytotoxicity Juniper Mesotrione 4SC - Field In-Ground C Phytotoxicity Juniperus sp. Mesotrione Syngenta Phytotoxicity Spruce Mesotrione 4SC - Field In-Ground C Phytotoxicity Picea sp. Mesotrione Syngenta Phytotoxicity Phytotoxicity Pine Pinus sp. Mesotrione 4SC Mesotrione - Syngenta Field In-Ground C Phytotoxicity Fir, Douglas Mesotrione 4SC - Field In-Ground C Phytotoxicity Pseudotsuga menziesii Mesotrione Syngenta Phytotoxicity Phytotoxicity Yew Taxus sp. Mesotrione 4SC Mesotrione - Syngenta Field In-Ground C Phytotoxicity Arborvitae Mesotrione 4SC - Field In-Ground C Phytotoxicity Thuja sp. Mesotrione Syngenta Phytotoxicity Hemlock, Canada Mesotrione 4SC - Field In-Ground C Phytotoxicity Tsuga canadensis Mesotrione Syngenta

2 IR-4 Ornamental Horticulture Program Research Report Form Instructions: 1) Please submit your IR-4 Ornamental Horticulture Program research report(s) on this form. Write the title of your project and the IR-4 Protocol Number on the first page. Include a summary paragraph about the results and any changes from the protocol on the first page and a summary table with statistics on the second page. Follow the guidelines in the remaining sections; some request filling them out or attaching a separate electronic file. 2) You may use this form for a single PRNumber or multiple PRNumbers. For example, group into a single report all the plant species tested for crop safety with one herbicide or group all the products tested against a target pest or disease into one research report form. 3) Open the footer to enter your name(s) and the PRNumber(s) covered by the research report. 4) the completed form to your Regional Field Coordinator. You may be asked by your Regional Field Coordinator (RFC) to attach the related Research Report Cover Sheet which includes your full name, address, and PRNumbers for your project. 5) any separate files (such as pictures of phytotoxicity, raw data files, environmental conditions files) to your RFC at the same time. 6) If this will be quite large with attached pictures and additional files, please burn two cds and send them to your RFC instead of the . 8/18/06 clp

3 IR-4 Ornamental Horticulture Program Research Report Form Project Title: Tolerance of field-grown conifers to over-the-top applications of Mesotrione 4SC. Protocol #: 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. Sprays of Tenacity 4SC (mesotrione) at 0.188, 0.25 or lb ai/a were applied on May 27 and again on July 7, 2010 over the top of ten actively growing conifer species that had been planted in a sandy loam soil in Little to no injury was observed on these conifers during the 2010 growing season. The highest injury rating (1.75 on a 0 to 10 scale) occurred on Douglas-fir 2 weeks after the second application of Tenacity 4SC at the highest dose. Injury was in the form of whitened growth on new needles. The whitening effect dissipated over time. Mesotrione appears to have good potential as a postemergence herbicide for conifers grown in nursery fields or Christmas tree plantations. Researcher(s): J. F. Ahrens and T. L. Mervosh 1 PRNumber(s): (Arborvitae); (Douglas-fir); (Fir, Fraser); (Hemlock, Canada); (Juniper); (Pine); (Spruce); (Yew)

4 IR-4 Ornamental Horticulture Program Research Report Form Results Table Numbers in table are average ratings of four replicates. Each plot contained five plants of each species. Tenacity 4SC (mesotrione) Genus & Species Applic. Rate Plant Injury (0-10) PR No. (lb ai / A) 6/7/10 6/24/10 7/21/10 10 DAT-1 4 WAT-1 2 WAT-2 Arborvitae Thuja occidentalis Douglas-fir Pseudotsuga menziesii Fir, Fraser Abies fraseri Hemlock, Canada Tsuga canadensis Juniper Juniperus horizontalis Pine, eastern white Pinus strobus Spruce, Colorado Picea pungens Spruce, Norway Picea abies Spruce, white Picea glauca Yew, Japanese Taxus media /9/10 5 WAT lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb lb Researcher(s): J. F. Ahrens and T. L. Mervosh 2 PRNumber(s): (Arborvitae); (Douglas-fir); (Fir, Fraser); (Hemlock, Canada); (Juniper); (Pine); (Spruce); (Yew)

5 IR-4 Ornamental Horticulture Program Research Report Form Materials & Methods/Recordkeeping Please fill out the information below or attach a separate document with comparable information. Crop History Crop Cultivar/Variety: Arborvitae (Thuja occidentalis Emerald Green ), Douglas-fir (Pseudotsuga menziesii), Fraser Fir (Abies fraseri), Canada Hemlock (Tsuga canadensis), Juniper (Juniperus horizontalis Blue Star ), Eastern White Pine (Pinus strobus), Colorado Spruce (Picea pungens), Norway Spruce (Picea abies), White Spruce (Picea glauca), Japanese Yew (Taxus media Hicksii ) Date of Seeding: Date of Emergence: Date of Transplanting: April 17 to May 5, 2008 Soil: In ground; sandy loam soil with 3% organic matter Pot size & spacing: Row spacing: 3 ft Product(s) applied prior to start of experiment: Product Rate Application Type Date of Application Crop Growth Stage Application Volume Add more rows as needed. Experiment Information Experimental Design: Randomized complete block Number of Reps: Four Materials & Methods: Insert materials & methods here only if information is not requested elsewhere. Application Equipment: CO 2 -pressurized hand-held boom with four 8003VS nozzle tips. Product(s) applied during experiment (including treatments, fertilizers, etc): Product Rate(s): of Product Application Type Dates of Application Crop Growth Stage Tenacity 4SC (mesotrione) 6 oz/a 8 oz/a 12 oz/a Sprays Over-the-top May 27, 2010 July 7, 2010 Active growth Application Volume 25 gal/a Add more rows as needed. Researcher(s): J. F. Ahrens and T. L. Mervosh 3 PRNumber(s): (Arborvitae); (Douglas-fir); (Fir, Fraser); (Hemlock, Canada); (Juniper); (Pine); (Spruce); (Yew)

6 IR-4 Ornamental Horticulture Program Research Report Form Environmental conditions during the experiment: Insert temperature, precipitation, relative humidity and other pertinent environmental conditions. Or send separate file with this information. See attached Excel spreadsheets with temperature and rainfall data. The summer of 2010 was very hot and dry, and the field was not irrigated. Researcher(s): J. F. Ahrens and T. L. Mervosh 4 PRNumber(s): (Arborvitae); (Douglas-fir); (Fir, Fraser); (Hemlock, Canada); (Juniper); (Pine); (Spruce); (Yew)

7 IR-4 Ornamental Horticulture Program Research Report Form Data Collected Please describe data collected and scoring system. Also include the dates data were collected. Plant injury evaluations (0 = no injury; 10 = plant dead) for each plant on June 7, June 24, July 21 and August 9, Control of specific weeds (0 = no control; 10 = complete control) on June 12, Raw Data Insert raw data below or send separate file containing raw data. See attached Excel data spreadsheets. Researcher(s): J. F. Ahrens and T. L. Mervosh 5 PRNumber(s): (Arborvitae); (Douglas-fir); (Fir, Fraser); (Hemlock, Canada); (Juniper); (Pine); (Spruce); (Yew)

8 2010 CAES Valley Laboratory - Windsor, CT PRECIPITATION (inches) Day of 2010 Month January February March April May June July August September October November December TOTAL Total

9 2010 CAES Valley Laboratory - Windsor, CT TEMPERATURE (F) Day of January February March April May June July August September October November December Month Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min Max Min AVG MAX MIN

10 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh Conifers transplanted into field in Spring Soil type: sandy loam Conifer species (in each plot): Arb Arborvitae Thuja occidentalis 'Emerald Green' DF Douglas-fir Pseudotsuga menziesii FF Fir, Fraser Abies fraseri Hem Hemlock, Canada (eastern) Tsuga canadensis Jun Juniper Juniperus horizontalis 'Blue Star' WP Pine, eastern white Pinus strobus CS Spruce, Colorado Picea pungens NS Spruce, Norway Picea abies WS Spruce, white Picea glauca Yew Yew, Japanese Taxus media 'Hicksii' Treatment Application Dates: T-1 May 27, 2010 T-2 July 7, 2010

11 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh Plant Injury Evaluation: June 7, 2010 (10 DAT-1) PLANT INJURY (0 Treatment Product Treatment Product 2009 Rate/A 2010 Rate/A Plots Arb DF FF Hem Jun WP Untreated Untreated Avg 0 0 Tenacity 4 oz Tenacity 6 oz Avg 0 0 Tenacity 8 oz Tenacity 8 oz Avg 0 0 Tenacity 4 oz Tenacity 12 oz Avg 0 0 Tenacity 8 oz Untreated Avg 0 0 Tower 32 oz Tower 21 oz Avg Tower 64 oz Tower 42 oz Avg 0 0 Pennant 32 oz Tower 84 oz Magnum Avg 0 0

12 Roundup O 4 oz + Roundup O 4 oz Goal 4F 8 oz + Goal 4F 8 oz Stinger 4 oz Stinger 4 oz Avg 0 0 Roundup O 8 oz + Roundup O 8 oz Goal 4F 16 oz + Goal 4F 16 oz Stinger 8 oz Stinger 8 oz Avg 0 0

13 0-10) CS NS WS Yew

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15 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh Plant Injury Evaluation: June 24, 2010 (4 WAT-1) PLANT INJURY (0 Treatment Product Treatment Product 2009 Rate/A 2010 Rate/A Plots Arb DF FF Hem Jun WP Untreated Untreated Avg 0 0 Tenacity 4 oz Tenacity 6 oz Avg 0 0 Tenacity 8 oz Tenacity 8 oz Avg Tenacity 4 oz Tenacity 12 oz Avg Tenacity 8 oz Untreated Avg 0 0 Tower 32 oz Tower 21 oz Avg Tower 64 oz Tower 42 oz Avg 0 0 Pennant 32 oz Tower 84 oz Magnum Avg 0 0

16 Roundup O 4 oz + Roundup O 4 oz Goal 4F 8 oz + Goal 4F 8 oz Stinger 4 oz Stinger 4 oz Avg Roundup O 8 oz + Roundup O 8 oz Goal 4F 16 oz + Goal 4F 16 oz Stinger 8 oz Stinger 8 oz Avg

17 0-10) CS NS WS Yew

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19 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh Plant Injury Evaluation: July 21, 2010 (8 WAT-1 / 2 WAT-2) PLANT INJURY (0 Treatment Product Treatment Product 2009 Rate/A 2010 Rate/A Plots Arb DF FF Hem Jun WP Untreated Untreated Avg Tenacity 4 oz Tenacity 6 oz Avg 0 0 Tenacity 8 oz Tenacity 8 oz Avg Tenacity 4 oz Tenacity 12 oz Avg Tenacity 8 oz Untreated Avg 0 0 Tower 32 oz Tower 21 oz Avg Tower 64 oz Tower 42 oz Avg Pennant 32 oz Tower 84 oz Magnum Avg

20 Roundup O 4 oz + Roundup O 4 oz Goal 4F 8 oz + Goal 4F 8 oz Stinger 4 oz Stinger 4 oz Avg Roundup O 8 oz + Roundup O 8 oz Goal 4F 16 oz + Goal 4F 16 oz Stinger 8 oz Stinger 8 oz Avg

21 0-10) CS NS WS Yew

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23 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh Plant Injury Evaluation: August 9, 2010 (11 WAT-1 / 5 WAT-2) PLANT INJURY (0 Treatment Product Treatment Product 2009 Rate/A 2010 Rate/A Plots Arb DF FF Hem Jun WP Untreated Untreated Avg Tenacity 4 oz Tenacity 6 oz Avg 0 0 Tenacity 8 oz Tenacity 8 oz Avg Tenacity 4 oz Tenacity 12 oz Avg 0 0 Tenacity 8 oz Untreated Avg 0 0 Tower 32 oz Tower 21 oz Avg Tower 64 oz Tower 42 oz Avg 0 1 Pennant 32 oz Tower 84 oz Magnum Avg

24 Roundup O 4 oz + Roundup O 4 oz Goal 4F 8 oz + Goal 4F 8 oz Stinger 4 oz Stinger 4 oz Avg Roundup O 8 oz + Roundup O 8 oz Goal 4F 16 oz + Goal 4F 16 oz Stinger 8 oz Stinger 8 oz Avg

25 0-10) CS NS WS Yew

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27 Conifer Transplants 2010: Mesotrione / Tower / 3-way Mix CAES Valley Lab - Windsor, CT John Ahrens & Todd Mervosh bm black medic cl cc common chickweed fp Weed Control Evaluation: June 24, 2010 (4 WAT-1) cf cinquefoil hw cg crabgrass kn cm chamomile pl W Treatment Product Treatment Product 2009 Rate/A 2010 Rate/A Plots bm cc cf cg cm cl Untreated Untreated Avg Tenacity 4 oz Tenacity 6 oz Avg Tenacity 8 oz Tenacity 8 oz Avg Tenacity 4 oz Tenacity 12 oz Avg Tenacity 8 oz Untreated Avg Tower 32 oz Tower 21 oz Avg Tower 64 oz Tower 42 oz Avg Pennant 32 oz Tower 84 oz 108 Magnum 202 0

28 Avg Roundup O 4 oz + Roundup O 4 oz Goal 4F 8 oz + Goal 4F 8 oz Stinger 4 oz Stinger 4 oz Avg Roundup O 8 oz + Roundup O 8 oz Goal 4F 16 oz + Goal 4F 16 oz Stinger 8 oz Stinger 8 oz Avg

29 clover red, white qg quackgrass field pansy rs red sorrel horseweed rw ragweed knawel vl venus looking-glass plantain (narrowleaf) EED CONTROL (0-10) fp hw kn pl qg rs rw vl

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