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Agronomy Journal Abstract -

Summer Fallow Soil Water Losses on Intermountain Dryland and Its Effect on Cropping Winter Wheat1


This article in AJ

  1. Vol. 62 No. 6, p. 722-725
    Received: Dec 9, 1969
    Accepted: July 17, 1970

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  1. T. W. Massee and
  2. F. H. Siddoway2



Intermountain drylands lose water from the root zone during the summer of fallow even though they receive a monthly average of 3.1 cm of precipitation. Soil water content in the 7.5- to 15-cm seed zone at the end of summer fallow was related to soil water content at the Lime tillage was initiated in the spring. Fall soil water content was not appreciably affected by variations in summer rainfall. Adequate soil water for winter wheat Triticum aestivum L. em Thell) emergence was best assured by initiating summer fallow tillage when the water content in the 7.5- to 15-cm layer was relatively high, rather than depending on summer rain to rewet this layer.

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