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This article in SSSAJ

  1. Vol. 25 No. 2, p. 150-154
     
    Received: May 26, 1960
    Published: Mar, 1961


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doi:10.2136/sssaj1961.03615995002500020024x

Determination of Consumptive Use of Water by Irrigated Crops in the Western United States1

  1. J. S. Robins and
  2. H. R. Haise2

Abstract

Abstract

Certain of the many procedures for indirect estimation of consumptive use are discussed including the Blaney-Criddle, Thornthwaite and Penman methods as well as evaporimeters such as atmometers and evaporation pans. The applicability and limitations in use of these procedures are analyzed including type and quality of data available, microclimatic effects and use of derived information. Problems involved in determining evapotranspiration or consumptive use by irrigated crops are discussed and their implications in use of data obtained for specific situations are analyzed. These include sampling precision, frequency and time of sampling, crop rooting depth and stage of growth, type of crop, moisture status effects, climatic effects including advected heat, and percolation losses beyond the sampling zone.

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