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ARS Home » Midwest Area » Ames, Iowa » National Laboratory for Agriculture and The Environment » Soil, Water & Air Resources Research » Research » Research Project #440310

Research Project: Field Scale Assessment of Factors Controlling Corn and Soybean Production Efficiency

Location: Soil, Water & Air Resources Research

Project Number: 5030-11610-006-004-S
Project Type: Non-Assistance Cooperative Agreement

Start Date: Jul 1, 2021
End Date: Jun 30, 2025

1. Evaluate interactions among nitrogen, carbon, soil water, and crop growth response across a range of soil types in a production field. 2. Evaluate field scale decision support system for nitrogen and crop management.

Field scale studies will be developed to evaluate nitrogen response to varying soil water regimes across a production field and the carbon dynamics in response to nitrogen management. Corn-soybean rotations will be evaluated over three growing seasons. Water, CO2, nitrogen, and light exchanges will be measured at several field locations within the field.