Location: Northwest Irrigation and Soils Research
Project Number: 5368-13000-008-06
Start Date: Jun 01, 2013
End Date: Jun 30, 2016
Objectives 1 and 2 will involve data collection from dairy farms and crop fields. We plan to measure nutrient budgets on four dairies and six to eight irrigated fields in southern Idaho. This information will be used to calculate potential nutrient losses and validate simulation models. The Root Zone Water Quality Model (RZWQM) and Integrated Farm System Model (IFSM) will be used in Objective 3 to predict nitrogen losses for various conditions and practices to provide a more comprehensive estimate of nitrogen losses from agriculture in southern Idaho. Water quality monitoring in springs and wells will be used to identify current water quality trends and establish a baseline to assess the impacts of future management practices. Water quality sampling will include isotope analysis to indicate nitrate sources and seasonal impacts of losses from irrigation canals. The total budget for the proposed project is $307,500. The project will be primarily funded by the Independent Dairy Environmental Action League ($232,500). Idaho Department of Environmental Quality will fund $25,000 per year for three years ($75,000 total), with funding for years 2 and 3 subject future appropriations.