According to a study from the United States, "A ratio of crop evapotranspiration (ETC) to reference evapotranspiration (ETO) determines a crop coefficient (K-C) value. which is related to specific crop phenological development to improve transferability of the K-C values. Development of K-C can assist in predicting crop irrigation needs using meteorological data from weather stations."
"The objective of the research was conducted to determine growth-stage-specific K-C and Crop Water use for maize (Zea Mays) and sorghum (Sorghum bicolor) at Texas AgriLife Research field in Uvalde, TX, USA from 2002 to 2008. Seven lysimeters, weighing about 14 Mg, consisted of undisturbed 1.5 m …
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