Carroll, Jim

Evaluate Potential Crop Injury from Herbicides Applied the Final Year of Peppermint Production when Rotating to Kentucky Bluegrass Seed or Wheat

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Series/Report number: 
COARC2015
Abstract: 
There have been ongoing concerns by growers and fieldmen in about herbicides used in peppermint production carrying over when rotating into Kentucky bluegrass or winter wheat. Symptoms generally appear as Sinbar damage despite lowered rates later in production years with no Sinbar applied the final year of production. Of concern is whether alternative herbicides used in the final year or two in combination with Sinbar is creating a synergistic effect that is causing the observed damage. A research project was established to evaluate four herbicides applied alone and in various combinations to address these concerns. As of early December, no observable effect of these twenty herbicide treatments on Kentucky bluegrass or winter wheat stands has been observed.

Evaluation of Herbicides for Control of Rough Bluegrass, Cheatgrass, Rattail Fescue and Medusahead in Establishment Year and Second Year Kentucky Bluegrass Grown for Seed

Series/Report number: 
COARC2016
Abstract: 
Adequate weed control during the establishment year of Kentucky bluegrass seed production is a challenge, particularly for grassy weeds in a grass crop. This project is a second-year project to evaluate innovative ways to use currently registered products to accomplish this goal, focusing on rough bluegrass, cheatgrass, rattail fescue and medusahead. Treatments and application timings include Callisto pre-emergence between planting and first irrigation, Beacon applied at 0.19 oz/acre, with and without Bronate at 1 pt/acre, at the 2-3 leaf and 4-5 leaf stages, and Beacon at the split application rate of 0.38 oz/acre during a October/November timing. Potential new herbicides, Fierce, Alion and Sharpen were evaluated in a second year stand for control of the same four grassy weeds and for crop safety, compared to two current industry standards. Application timings were pre-emergence and during October/November. Results from establishment year plots indicates significantly less stunting of Kentucky bluegrass when Beacon is applied at 2-3 leaf rather than the 1-2 leaf stage as was done during 2015. Bronate appears to be an effective crop safener when added to Beacon at either 2-3 leaf or 4-5 leaf stages, with similar control of the grassy weeds.

Herbicide Evaluation for Volunteer Bluegrass Control in Winter Wheat, 2009

Central Oregon Agricultural Research Center 2009 Annual Report
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Series/Report number: 
09-15

Winter Grain Mite Control in Kentucky Bluegrass Grown for Seed in Central Oregon, 2008

Central Oregon Agricultural Research Center 2008 Annual Report
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Series/Report number: 
sr1093

Evaluation of Herbicides for Control of Broadleaf Weeds in Kentucky Bluegrass, 2000

Central Oregon Agricultural Research Center 2000 Annual Report
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Series/Report number: 
1025

Evaluation of Herbicides for Control of Cheatgrass in Kentucky Bluegrass, 1999-2000

Central Oregon Agricultural Research Center 2000 Annual Report
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Series/Report number: 
1025

Evaluation of Herbicides for Control of Cheatgrass and Rattail Fecue in Rough Bluegrass, 1998-99

Central Oregon Agricultural Research Center 1999 Annual Report
Series/Report number: 
1013

Comparison of SPAD Chlorophyll Meter Readings Versus Petiole Nitrate Concentration in Sugar Beet

Central Oregon Agricultural Research Center 1999 Annual Report
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Series/Report number: 
1013

Evaluation of Herbicides for Control of Roughstalk Bluegrass and Injury to Kentucky Bluegrass, 1995-1996

Central Oregon Agricultural Research Center 1996 Annual Report
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Series/Report number: 
969
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