Authors: Wilcox, J. C.
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Published in: CBE Journal » CBE Journal Volume 12 (1970)

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Description: A previous investigation, on how much credit to give for rain in semiarid areas, was reported by the author (3) in 1967. The data used were obtained from evaporimeters and rain gauges placed near orchards. It was concluded (a) that once an irrigation is started it should be continued to completion irrespective of rain, and (b) that no more credit should be given for rain than would raise the moisture content of the soil to field capacity in any part of the field. This latter could be accomplished by adhering to the two following rules: 1. While irrigation is in progress, give credit for rain only up to the evapotranspiration of the day. 2. Between irrigations, give credit for rain only up to the soil moisture balance that was entered at the first setting of the sprinkler line at completion of the previous irrigation. This balance at the first setting occurred at the same time as the balance that represented field capacity at the last setting.

Keywords: credit to give for rain when scheduling irrigations in semi-humid areas
Citation: Wilcox, J. C. 1970. CREDIT TO GIVE FOR RAIN WHEN SCHEDULING IRRIGATIONS IN SEMI-HUMID AREAS. Canadian Agricultural Engineering 12(1):33-37.
Volume: 12
Issue: 1
Pages 33 - 37
Date: 1970
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Coverage: Canada
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