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United States Department of Agriculture

Agricultural Research Service

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Research Project: Developing Sustainable 'in-Row' Management Practices for Weed Management Ans Soil Nitrogen Retention

Location: Crops Pathology and Genetics Research

2011 Annual Report


1a.Objectives (from AD-416)
Develop alternative "in-row" weed management practices that both provide effective weed management, do not negatively impact grapevine growth and juice, and improve soil nitrogen (N) retention by minimizing inorganic N leaching and nitrous oxide (N2O) emissions.


1b.Approach (from AD-416)
Establish three 'in-row' weed management practices: 1)a standard herbicide application; 2)an under-the-vine cover crop, and 3)furrow cultivation with compost. We will focus on surveying changes in both weed seedbank and weed community compostion, measure annual soil N leaching and N2O emissions, and address peak periods of N2O loss during fertigation. This project is part of GRACEnet, a national network of USDA/ARS researchers contributing data from studies on land use and greenhouse gas emissions to develop biogeochemical models and best management practices to minimize N loss from agricultural systems.


3.Progress Report

The agreement was established in support of objective #4 of the parent project, the goal being to investigate the impacts of vineyard practices on soil microbial ecology. The goal of this project is to develop alternative “in-row” weed management practices that both provide effective weed management, do not negatively impact grapevine growth and juice, and improve soil nitrogen (N) retention by minimizing inorganic N leaching and nitrous oxide (N20) emissions. In the first few months of this project recruitment and hiring has been accomplished for support staff and purchases for necessary lab and field supplies to date have been processed. Preliminary field work has been accomplished. During the course of the year we plan to establish three ‘in-row” weed management practices:.
1)a standard herbicide application; 2)an under-the-vine cover crop, and 3)furrow cultivation with compost. We will focus on surveying the changes in both weed seedbank and weed community composition, measure annual soil N leaching and N2O emissions, and address peak periods of N2O loss during fertigation.


Last Modified: 7/12/2014
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