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United States Department of Agriculture

Agricultural Research Service

Research Project: EFFICIENT AND ENVIRONMENTALLY SUSTAINABLE AGRICULTURAL WATER MANAGEMENT IN HUMID REGIONS

Location: Coastal Plain Soil, Water and Plant Conservation Research

Project Number: 6657-13000-008-00
Project Type: Appropriated

Start Date: Dec 29, 2006
End Date: Dec 28, 2011

Objective:
The goal of this research will be to obtain knowledge and develop tools that will enable planners, decision makers, and producers to more effectively manage, conserve, and protect water resources. Specific objectives are as follows: 1)Develop cotton and peanut production systems for humid areas that are based on site-specific water and nutrient applications, 1a)Develop water management strategies in humid areas that optimize spatial and temporal water applications, 1b)Develop and explore spatial nutrient management for irrigated and non-irrigated crops in humid areas; 2)Develop practices that increase crop water use efficiency in rainfed/irrigated cropping systems in relation to tillage, irrigation, and crop management practices; and 3) Develop practices and technologies that enhance denitrification and expand the knowledge of microbial communities including their genetics and implication on geospecific disease in riparian buffers, wetlands, and streams for improving water quality.

Approach:
This 5-year project utilizes a systems approach to identify and develop strategies for improved spatial management of water and nutrients. The project explores the spatial components of irrigation, tillage, and nutrient management. In spatial irrigation, the project will focus on identifying strategies for managing a site-specific irrigation system to conserve water and nutrients while maintaining cost effective production. In tillage management, the project will focus on efficiency of water use using tillage practices that will improve infiltration and soil water-holding capacities under site-specific irrigation to determine the spatial uptake and water use efficiency to improve spatial water management. In nutrient management, the project will focus on both in-field and off-site management. In-field nutrient management will focus on spatial nitrogen applications on cotton and Coastal bermudagrass to improve crop production and reduce the impact of off-site nitrogen movement. Off-site nitrogen and water management will focus on understanding the geospatial variability of microbial communities along with nitrous oxide emissions from riparian buffers, wetlands, and streams. In Objective 3, the Experimental Approach is altered to expand the sites under the Denitrification Enzyme Activity section and delete the Treatment Wetland Microcosms section.

Last Modified: 10/1/2014
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