Reference and Crop Evapotranspiration in South Central Nebraska. I: Comparison and Analysis of Grass and Alfalfa-Reference Evapotranspiration

摘要: In Nebraska, historically, there have been differences among the water regulatory agencies in terms of methods used to compute reference evapotranspiration ( ETref ) determine actual crop requirements and hydrologic balances watersheds. Because simplified and/or empirical temperature or radiation-based lack some major weather parameters that can significantly affect grass alfalfa-reference ET ETo ETr performance these needs be investigated help decision makers potential associated with using various equations relative standardized ASCE Penman–Monteith (ASCE-PM) equations. The 12 five were analyzed on a daily basis for south central Nebraska from 1983 2004. ASCE-PM values as comparisons. maximum value was estimated 12.6 mm d−1 , highest 19 June 21,...