Progress 10/01/12 to 09/30/13
Outputs
Target Audience:The target audience for this project is commercial tree fruit and vineyard growers and their employees, as well as, industry professionals that serve commercial fruit and vineyard operations and extension agents with commercial tree fruit and vineyard clientele. An additional component involves working with ag chemical manufacturers as well as IR-4 to develop new herbicide registrations for tree fruit and vineyard crops. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Results for tolerance trials have been shared with IR-4 to be used to develop labels for those herbicides in the crops they evaluated. Results from the other trials have been shared with manufacturers and growers. What do you plan to do during the next reporting period to accomplish the goals?Continue to evaluate crop tolerance to herbicides. Trials are currently being initiated. I also have trials looking at some new formulations of products currently in the market place.
Impacts
What was accomplished under these goals?
Evaluated caneberry tolerance to 2,4-D choline, glufosinate, and saflufenacil. Evaluated peach tree tolerance to quinclorac and flazasulfuron Conducted trials in apple and peach evaluating weed control programs using penoxsulam in combination with pendimethalin and norflurazon for residual weed control. Conducted trials in apple and peach evaluating combination herbicide formulations of glufosinate and indaziflam. Conducted trials in apple and peach to look at economical weed control programs using rimsulfuron for residual weed control.
Publications
- Type:
Journal Articles
Status:
Accepted
Year Published:
2023
Citation:
Sims KC, Mitchem, WE, Jennings KM, Monks DW. Tolerance of muscadine grape to 2,4-D choline postemergence directed. Weed Tech. 37 (1):89-94
- Type:
Journal Articles
Status:
Published
Year Published:
2022
Citation:
Sims, KC, Jennings, KM, Monks DW, Jordan, DL, Hoffman, M, Mitchem, WE, (2022). Tolerance of plasticulture strawberry to 2,4-D choline applied to row middles. Weed Tech 36:409-413.
- Type:
Journal Articles
Status:
Published
Year Published:
2022
Citation:
Sims KC, Jennings KM, Monks DW, Jordan DL, Hoffman M, Mitchem WE (2022) Tolerance of southern highbush blueberry to 2,4-D choline POST-directed. Weed Tech 36:409-413
- Type:
Journal Articles
Status:
Submitted
Year Published:
2024
Citation:
Sims KC, Jennings KM, Monks DW, Jordan D, Hoffman M, Mitchem W (2023) Effect of simulated 2,4-D and dicamba drift on strawberry plant and fruit development. Weed Tech (submitted)
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Progress 10/01/11 to 09/30/12
Outputs
OUTPUTS: In peach research trials were conducted to determine the cost-effectiveness of PRE herbicide programs. There is considerable varabiltiy in costs with differences in level of performance. In apple orchards we initiated two trials to evaluate glufosinate applied in tank mix combinations with other POST herbicides as glyphosate alternatives. The intention is to address concerns related to glyphosate resistant weeds and concerns related to tree health issues known to occur when glyphosate is used repeatedly. Results of trials have been dissimated at regional, state, and area production meetings in GA, SC, NC, and TN. PARTICIPANTS: Tom Hoyt, NCSU Hort Science technician SC Peach Council Bayer Crop Science TARGET AUDIENCES: Peach and apple growers throughout the Southeast. Dissemination was through extension and outreach as well as grower workshops and meetings PROJECT MODIFICATIONS: Not relevant to this project.
Impacts
Peach producers were informed about the effectiveness of a new herbicide, indaziflam, and hwo it could be used in a management program to provide weed control at critical times for crop development. The acceptance of this program will aid in resistant management techniques. Apple producers were provide information that would allow to eliminate a glyphosate application during the year and use a glufosinate tank mix with several herbicides to provide equivalent weed control without be exposed to risks associated with multiple glyposhate applications.
Publications
- No publications reported this period
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Progress 10/01/10 to 09/30/11
Outputs
OUTPUTS: Conducted trials to evaluate peach and apple tree response to sulfentrazone and penoxsulam herbicides. Additional trials were done to evaluate application timing and rate of indaziflam herbicide in apple and peach trees. Trials were conducted to determine caneberry tolerance to pendimethalin and quinclorac. A multi-year grape trial was initiated to determine the impact of varied herbicide strip width and late summer weed competition on wine grape yield and juice quality. PARTICIPANTS: Sara Spayd, David Monks, Katie Jennings, Roger Batts, Bayer Crop Science, IR-4, SCRI Grant - VA Tech, Dow AgroSciences, BASF, DuPont, Greg Henderson, NovaSource TARGET AUDIENCES: Fruit growers in Southeastern United States Crop Protection Manufacturers IR-4 PROJECT MODIFICATIONS: Not relevant to this project.
Impacts
Information gathered from trials are used to develop herbicide recommendations and expand the number of registered herbicides used to control weeds in perennial fruit crops.
Publications
- No publications reported this period
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Progress 10/01/09 to 09/30/10
Outputs
OUTPUTS: Research results are shared with herbicide manufacturers to aid in the development of product labels. Such information as use pattern, efficacy and crop tolerance data is reported to these companies. Research supported by grower organizations is conducted to assist growers with improving weed management practices and aid in their profitability. Results are report at grower meetings, newsletters, and other extension publications used by growers making pest management decisions. PARTICIPANTS: Tom Hoyt, NCSU Horticultural Science BASF Bayer Crop Science DuPont SC Peach Council Southern Region Small Fruit Consortium Cheminova TARGET AUDIENCES: Fruit growers Agricultural Chemical Manufacturers Grower organizations Pest Management Professionals Extension Agents PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
Finding have resulted in delaying the registeration of a herbicide in peach orchards due to injury to trees associated with the use of this new herbicide in sandy soils. Other research has demonstrated the use of microsprinkler irrigation will allow for treating less soil with herbicide in young peach orchards. Crop tolerance research has demonstrated to a herbicide manufacturer that a specific herbicide can safely be used in apples thus encouraging the manufacturer to move foward with effort to register this herbicide in apple trees. This would be significant to growers because this herbicide controls yellow nutsedge.
Publications
- MacRae, A.W., W.E. Mitchem, D.W. Monks, M.L. Parker, and R.K. Galloway. 2007. Tree Growth, fruit size, and yield response of mature peach to weed-free intervals. Weed Tech 21:102-105.
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Progress 10/01/08 to 09/30/09
Outputs
OUTPUTS: In 2009 the Weed Management Techniques for Tree Fruit and Vine Crops Research project conducted trials at various locations across NC, SC, and GA evaluating fruit crop tolerance to herbicides and weed management systems in fruit crops. Two of these trials evaluated peach tree variety response to saflufenacil with two additional trials being conducted to determine apple and peach tree tolerance to saflufenacil in commercial plantings. A trial was conducted to investigate purple nutsedge management systems for peach orchards using sulfentrazone, halosulfuron, and terbacil. This was a multi-year study that will conclude in the spring on 2010. Two trials were conducted in apples evaluating apple tree tolerance to sulfentrazone and weed management systems with sulfentrazone in apple orchards. The apple tree tolerance study was done in conjunction with IR-4 Project. Three additional trials were conducted to investigate and develop weed management programs using saflufenacil and rimsulfuron in fruit crops. Information developed by this program was shared with growers, extension agents, and industry professionals through oral presentations at regional, state, area, and county meetings and Field Days. In 2009 these included Southeast Fruit and Vegetable Conference, Savannah, GA, Jan 9-12; Southeastern Apple Meeting, Asheville, NC Jan. 7-8; Middle GA Peach Meeting, Jan. 27; Ridge Peach Meeting, Edgefield, SC; Southern Weed Science Society Annual Meeting, Orlando FL, Feb 9-12; Southern Region Small Fruit Consortium, Aug. 4-5, Lincolnton, NC. PARTICIPANTS: Individuals involved in the project include Tom Hoyt, research technician in the Department of Horticultural Science at NC State Univ. Collaborators include USDA Tree Fruit and Nut Lab, Byron, GA, Clemson University Cooperative Extension, and Southern Region IR-4, University of Florida. Research projects were funded by BASF, DuPont Ag Products, IR-4 Project, and SC Peach Council. TARGET AUDIENCES: Target audiences are fruit growers, IR-4, and crop protection companies. Growers benefit though the development of weed management programs that result in recommendations to aid with herbicide selection and weed management decision making procedures that directly impact crop quality and farm profitability. Data generated from this project is used to develop and write labels for herbicides that will have future registered uses in fruit crops. PROJECT MODIFICATIONS: No modifications are expected
Impacts
Data generated from these trials will be used by crop protection companies and IR-4 in the development of herbicide labels for fruit crops. Data from one trial delayed the develop of a herbicide label due to crop tolerance issues on coarse textured, low organic matter soils which was to the benefit of the manufacturer and growers. Information from these trials is used to provide support to the IR-4 Project in their pursuit to labels for these crops. Trials also address herbicide performance relative to cost to aid growers in making cost-effective herbicide decisions that increases their profitability. All funding agencies have received reports.
Publications
- Buckelew, J.K., Monks, D.W., Mitchem, W.E., and Jennings, K.M. 2009. Effect of vegetation-free area and irrigation on newly planted peach. Proc. Southern Weed Sci. Soc. 26:468.
- Mitchem, W.E., Henderson, W.G., Monks, D.W., and Jennings, K.M. 2009. Purple nutsedge management in orchard after two years of treatment with sulfentrazone, halosulfuron, and terbacil. Proc. Southern Weed Sci. Soc. 62:469.
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