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The Sorraia Watershed has a long history of continuous irrigated maize. Imprecise water and fertiliser management has contributed to increase nitrate in the groundwater. Solving this problem requires the identification of problem sources and the definition of alternate management practices. This...
In this paper, daily ET 0 estimates at two semiarid locations, Zaragoza and Córdoba, were obtained from the Penman–Monteith equation using either fixed (70 s m −1 ) or variable r c values. Variable r c values were computed with two models, Katerji and Perrier, and Todorovic. Daily ET 0...
The exponents of the advance and infiltration power laws have been shown to remain practically constant for different furrow irrigation discharges. Under this hypothesis, a procedure to estimate the advance and infiltration equations corresponding to untested discharges was developed. The...
The purpose of this paper is to evaluate the economic feasibility of agriculture with rainwater harvesting and supplemental irrigation in a semiarid region. The results show the importance of making full use of every open-air hardened surface to collect rainwater and to establish rainwater...
A new empirical equation for estimating hourly reference evapotranspiration ET 0 is proposed. This equation requires data for three pertinent meteorological attributes, solar radiation R s , air temperature T , and relative humidity RH. A routine surface polynomial regression analysis in three...
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