Improving Nitrogen Fertilizer Management in Surface-Irrigated Cotton

We propose conducting research in central Arizona to compare the common regional practice of N fertigation with knifed N injections in surface-irrigated cotton (i.e., level furrow irrigation). Additionally, we will compare reflectance-based nitrogen fertilizer management with soil test-based management. Furrow and other surface irrigation methods are still the most common irrigation mode for cotton in Arizona and worldwide.

IPNI-2010-USA-AZ08