Abstract: A linear‐programming (LP) framework with associated design and cost‐estimating procedures is developed to evaluate the economics of deficit irrigation in system design and to optimize the sizing and operation of irrigation ...

Abstract: Ten forms of the Penman combination evapotranspiration equation are reviewed and compared with lysimeter estimates at three locations. Aerodynamic and canopy resistance forms by Monteith and Thom and Oliver and an empirical ...

Abstract: Procedures and guidelines are recommended for assessing integrity, quality, and reasonableness of measured weather data and equipment calibration for automated and electronic agricultural weather stations. The procedures ...

Abstract: Procedures are introduced for self-calibrating an equation for estimating solar radiation (

Abstract: Improved equations are presented tor calculating correction factors for the United Nations Food and Agriculture Organization Irrigation and Drainage Paper Number 24 (FAO‐24) grass reference evapotranspiration methods. ...

Abstract: A differential approach is applied to multiple outlet pipes with constant and continuously variable outflow. This approach simulates pressure distributions along uniform sprinkle and trickle irrigation laterals and manifolds, ...

Abstract: Analytical equations that characterize hydraulics of center‐pivot laterals with and without end‐gun sprinklers were developed. The equations include computation of pressure‐head distribution; pressure‐head loss; and maximum, ...

Abstract: A brief history of development of the 1985 Hargreaves equation and its comparison to evapotranspiration (ET) predicted by the Food and Agricultural Organization of the United Nations (FAO) Penman-Monteith method are described ...

Abstract: Both old and new design and management concepts for increasing irrigation and energy‐use efficiencies and net farm profits should be integrated into current and new system designs. Computerized procedures are available for ...