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Article
Agricultural Engineering
AGRONOMIC OUTCOMES OF PRECISION IRRIGATION MANAGEMENT TECHNOLOGIES WITH VARYING COMPLEXITY
Kelly R. Thorp et al.
Summary: This study compares different solutions for precision irrigation management in terms of cotton yield and water productivity. It found that a soil water balance model based on evapotranspiration and a modeling framework utilizing specific soil data had similar effects on applied irrigation, cotton fiber yield, and water productivity. The approach of estimating crop coefficients using unmanned aerial systems significantly reduced applied irrigation but also resulted in yield reduction. The use of commercial variable-rate irrigation technology maintained yield while reducing applied irrigation. The study also suggests that crop water stress information, particularly from thermal imaging data obtained from unmanned aerial systems, could benefit irrigation scheduling protocols.
JOURNAL OF THE ASABE (2022)
Article
Agronomy
Irrigation rate and timing effects on Arizona cotton yield, water productivity, and fiber quality
K. R. Thorp et al.
AGRICULTURAL WATER MANAGEMENT (2020)