Source: NORTH CAROLINA STATE UNIV submitted to NRP
WEED MANAGEMENT TECHNIQUES FOR TREE FRUIT AND VINEYARD CROPS
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
Reporting Frequency
Annual
Accession No.
1001657
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Nov 6, 2013
Project End Date
Sep 30, 2018
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
NORTH CAROLINA STATE UNIV
(N/A)
RALEIGH,NC 27695
Performing Department
Horticultural Science
Non Technical Summary
Fruit growers depend on herbicides to prevent weed competition in fruit crops. Weeds compete with fruit crops for water and nutrients which results in reduced growth in young plantings, reduced yields and quality in established plantins. In addition to competition, weeds also impact other pests such as insects, viral diseases and vertebrate pests. There are increasing concerns related to populations of herbicide resistant weeds and difficult to control species like nustedge. In order for growers to deal with these historical issues and combat potential weed related issues in the future there is a need to develop data to support the registration of additional herbicides and evaluate management programs to control problem species. In order to properly address these issues the conduct of applied research in commercial fruit production settings is necessary to answer the needs of fruit growers'concerns related to weed management. These trials will be funded through commodity association grants, herbicide manufacturer support, and competitive grants. Results from this project will be shared with the industry and growers through written publications and oral presentations. The ultimate of goal this project will be to develop effect techniques to address weed management issues for fruit growers throughtout the Southeastern United States. In order to develop solutions to these issues there has to be consideration for environmental impact and stewardship, as well as, economically feasible and effectiveness to insuregrower adoption and utilization
Animal Health Component
100%
Research Effort Categories
Basic
(N/A)
Applied
100%
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
21301991140100%
Knowledge Area
213 - Weeds Affecting Plants;

Subject Of Investigation
0199 - Soil and land, general;

Field Of Science
1140 - Weed science;
Goals / Objectives
The major goals of this project is too develop data to support the registration of herbicdes for use in fruit crops, develop management programs to control certain weed species, and determine the interaction between herbicide strip width and fruit yield and quality. Information developed from this research will be shared with the pest management industry, IR-4 Project, extension agents, and fruit growers to assist in managment decisions related to weed control in fruit crops.
Project Methods
Field trials will be conduct in commercial production settings. These will be replicated trials with various treatments for comparison using statistical analysis. Data will be analyzed and reported using peer reviewed publications, extension publications and oral presentations.

Progress 11/06/13 to 09/30/18

Outputs
Target Audience:The primary audience for this project was commercial fruit growers in NC, SC, and GA as well as extension agents that work with growers in those states. Additionally this project worked with industry representatives from crop protection companies and crop protection distributors to address their questions and needs related to weed management in commercial fruit production. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?This project was involved in a multi-state agent training event held in January of 2018 held in conjunction with the Southeast Regional Fruit and Vegetable Conference in Savannah. Training focused on proper applicaiton techniques and applicator calibration for pesticides used in commercial small fruit production. How have the results been disseminated to communities of interest? Nothing Reported What do you plan to do during the next reporting period to accomplish the goals?Trails will be continuing for 2,4-D Choline. We will be looking at caneberry tolerance to glufosinate.

Impacts
What was accomplished under these goals? During this past year this program conducted research trials evaluating to the tolerance of fruit crops to 2,4-D choline which is the new 2,4-D formulation developed for use in 2,4-D tolerant crops. The crops this product was evaluated in include apple, peach, grape, and blackberry. So far all crops have demonstrated excellent tolerance. 2,4-D choline will be an excellent product to use because of the add crop safety over previous formulations due to reduced likelihood of off target movement. It will also aid as means to manage herbicide resistant weeds.

Publications

  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Evaluating weed control and response of newly planted peach tree to herbicides. J.K. Buckelew, W.E. Mitchem, S. Chaudhari, D.W. Monks and K.M. Jennings. 2018. Internat. J. of Fruit Sci. 18(4):383-393.
  • Type: Journal Articles Status: Published Year Published: 2018 Citation: Vegetation-free strip width effects on growth, berry composition, and yield of Cabernet Franc in vigorous growing environments. Catalyst. DOI: 10.5344/catalyst.2018.17005.


Progress 10/01/16 to 09/30/17

Outputs
Target Audience:Commercial fruit growers, extension agents, and industry professionals involved the production of apple, peach, grape, and some small fruit crops. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided?Presentaions of information gleaned from this project have been shared with growers and agents in 5 states during 2017. How have the results been disseminated to communities of interest? Nothing Reported What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? The primary goal of this project is to aid in the development weed managent needs for fruit crops. This includes screening herbicides for use in fruit crops as well as aiding in the development of management programs with newly registered herbicides.

Publications

  • Type: Journal Articles Status: Published Year Published: 2017 Citation: Meyers, S.M., K.M. Jennings, D.W. Monks, W.E. Mitchem. 2017. Herbicide based Weed management programs in erect, thornless blackberry. International Journal of Fruit Science. 17:456-464.
  • Type: Journal Articles Status: Published Year Published: 2017 Citation: Basinger, N., K.M. Jennings, D.W. Monks, W.E. Mitchem, P.M. Perkins-Veazie, and S. Chaudhari. 2017. In Row Vegetation Free Strip Width Effect on Established Navajo Blackberry. Weed Technology 32 (1): 85-89.


Progress 10/01/15 to 09/30/16

Outputs
Target Audience:Commercial producers of apple, peach, grape, and other fruit crops in the Southeast as well as industry professionals that provide or sale services to producers of these crops. Changes/Problems:There has been no major changes in the approach. The commercial clientele are very comfortable with utilization of means to provide them information. What opportunities for training and professional development has the project provided? Nothing Reported How have the results been disseminated to communities of interest?Results have been disseminated through oral presentations at grower meetings and through printed media (including electronic) in the form of commercial spray guides that are used across the Southeastern United States. What do you plan to do during the next reporting period to accomplish the goals?Continue to reach clientele in the same manner.

Impacts
What was accomplished under these goals? Provide research supporting the registration of Pindar GT (penoxsulam + oxyfluorfen) in apple and peach orchards. Supported research evaluating tolerance concerns related to indaziflam use in grapes that are not planted on a berm. Conducting trials (ongoing research) to evaluate crop safety of grape, blackberry, and peach to 2,4-D Choline.

Publications

  • Type: Journal Articles Status: Published Year Published: 2017 Citation: Herbicide Based Weed Management Programs in Erect, Thornless Blackberry. S.M. Meyers, K.M. Jennings, D.W. Monks, and W.E. Mitchem. International Journal of Fruit Science. 17:456-464.


Progress 10/01/14 to 09/30/15

Outputs
Target Audience:The target audiences forthis project are commercial apple, peach, and grape growers inNC,SC and GA as well as professionals associated with the commercial fruit industries in these states like extension agents,agricultural chemical company employees,distributors. Changes/Problems:Working with a major chemical company to develop a herbicide use that will best serve the growers in the Eastern United States. What opportunities for training and professional development has the project provided?Program has been involved in the training of agents from 5 Southeastern states and offered recommendations via oral communication at multiple meetings of commercial growers through out the Southeast. How have the results been disseminated to communities of interest?Through oral and written communication What do you plan to do during the next reporting period to accomplish the goals?Plan to continue work on developing a weed management program for utilizing penoxsulam in fruit crops.

Impacts
What was accomplished under these goals? Developed use program for glufosinate in apple and peach orchards that is very effective at controlling target weeds while using redcued rates that is cost savings without adversely affecting herbicide preformance

Publications

  • Type: Journal Articles Status: Under Review Year Published: 2016 Citation: Buckelew, J.K., W.E. Mitchem, M.L. Parker, and D.W. Monks. 2015. Effect of vegetation-free area and irrigation on growth and yield of newly planted peach. Weed Tech.


Progress 11/06/13 to 09/30/14

Outputs
Target Audience:Fruit growers, Extension agents, Agricultural Consultants, Professionals in Agricultural Chemical Sales, Technical Support, as well as Research and Development Changes/Problems:The registration of several herbicides have resulted in the alteration of recommendations for controlling yellow nutsedge in apple orchards. What opportunities for training and professional development has the project provided?Provided training to extension agents from six states at regional training meetings. Also provided training through oral presentations to growers, extension agents, and agricultural professionals. How have the results been disseminated to communities of interest?Dissimenation has been through oral presentations, web based publications, and manuals. What do you plan to do during the next reporting period to accomplish the goals? Nothing Reported

Impacts
What was accomplished under these goals? The major goals of this project is too develop data to support the registration of herbicides for use in fruit crops, develop management programs to control certain weed species, and determine the interaction between herbicide strip width and fruit yield and quality. Information developed from this research will be shared with the pest management industry, IR-4 Project, extension agents, and fruit growers to assist in managment decisions related to weed control in fruit crops.

Publications

  • Type: Journal Articles Status: Published Year Published: 2015 Citation: Herbicide-Based Weed Management Programs in Erect, Thornless Blackberry S.L. Meyers, K.M. Jennings, D.W. Monks, and W.E. Mitchem. International Journal of Fruit Science, 15:456-464, 2015