Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

United States Department of Agriculture (USDA) National Institute of Food and Agriculture

Titre : DEVELOPING RESILIENT IRRIGATED CROPPING SYSTEMS IN CONCENTRATED DAIRY PRODUCTION AREAS OF THE SEMI-ARID

Identification : 0441378

Pays : Etats Unis

Durée : START : 14 DEC 2021 TERM : 13 DEC 2026

Objectifs
Objective 1 : Develop improved practices and strategies for managing inputs in irrigated cropping systems to increase soil health, optimize crop productivity and quality, and minimize negative environmental impacts. Sub-objective 1A : Identify effects of fertilizer source, timing of application, and nitrification/urease inhibitors on nutrient cycling and field-scale nutrient budgets. Sub-objective 1B : Identify effects of past manure application rate and frequency on biological indicators of soil health, nutrient cycling, and field-scale nutrient budgets. Sub-objective 1C : Determine the efficacy of cover crops and minimum tillage to reduce offsite transport of soil nutrients in a dairy forage crop rotation receiving manure. Sub-objective 1D : Determine the long-term agronomic economic effects of manure applications on crops, soil nutrient (primarily N, C, and P) cycling, and soil health indicators. Sub-objective 1E : Determine effects of crop rotation, tillage, and residue management on residue breakdown rates and nutrient cycling in irrigated cropping systems. Sub-objective 1F : Evaluate aboveground biomass yield, forage quality, and nutrient cycling of sorghum-sudangrass hybrids under multiple management practices (row spacing, number of cuttings, and cultivar). Objective 2 : Quantify gaseous emissions from dairy production facilities and manure-amended soils to improve nutrient cycling and reduce environmental impact of these systems. Sub-objective 2A : Determine the effect of manure application rate and frequency on soil GHG emissions. Sub-objective 2B : Determine the effect of manure, cover crop, and minimum tillage on soil GHG emissions. Sub-objective 2C : Determine ammonia transport and dry deposition in the Magic Valley region and improve accuracy of deposition models.

Performing Institution : AGRICULTURAL RESEARCH SERVICE KIMBERLY, IDAHO 83341
Investigator : ROGERS C W ; DUNGAN R S ; LEYTEM A B ; TARKALSON D D ; BJORNEBERG D L

Présentation : USDA (NIFA)