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The general procedure used in the scheduling of irrigation of orchards in the Okanagan Valley has already been outlined (1, 3). The first steps were to determine the safe irrigation interval in the heat of the summer and the amount of water required at each irrigation. Two evaporimeter assemblies and a rain gauge were established at or near each orchard. Evaporation was transposed daily into irrigation deficit in inches, and the soil moisture balancesheet method was used for determining when to start each irrigation. Except perhaps in the heat of the summer, there was a period between irrigations when water was not applied. One of the main purposes of scheduling is to save water and labor. The question is, how effectively does scheduling actually accomplish this? It is the purpose of this paper to answer this question on the basis of four years experience in which 17 growers scheduled their irrigation by the balancesheet method.
effect of scheduling of irrfgation of orchards on water and labour requirements
Wilcox, J. C. 1967. EFFECT OF SCHEDULING OF IRRFGATION OF ORCHARDS ON WATER AND LABOUR REQUIREMENTS. Canadian Agricultural Engineering 9(1):51-53.
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