Authors: Karkanis, P. G.
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Published in: CBE Journal » CBE Journal Volume 25 (1983)

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Description: The available soil moisture, which is the difference between the soil water con tent at field capacity and wilting point (Baver 1961), is a concern for irrigation scheduling and crop production. Plant growth is largely dependent on the avail able soil moisture. Therefore, the determination of water held at field capacity and wilting point is a requirement for proper irrigation water management. These values vary among soils and are mostly determined by laboratory measurements, which are laborious and time consuming. Earlier researchers have investigated this area of work, of which De Jong (1981) gave a review and comparison of the development of soil water models and discussed their different types including the soil water budget models, stating some of their advantages and disadvantages. Soil water retention characteristics are estimated in the laboratory with pressure plates (Richards 1947). They are also estimated from particle size distribution, organic matter percent and bulk density (Gupta and Larsen 1979). Recently, empirical relations between laboratory determinations of soil texture and moisture retention were found (Oosterveld and Chang 1980). A considerable variation in measured soil water contents was observed within each textural group of soils with the coefficients of variation decreased from the coarse- to the fine-textured groups(De Jong 1982).

Keywords: determining field capacity and wilting point using soil saturation by capillary rise
Citation: Karkanis, P. G. 1983. DETERMINING FIELD CAPACITY AND WILTING POINT USING SOIL SATURATION BY CAPILLARY RISE. Canadian Agricultural Engineering 25(1):19-22.
Volume: 25
Issue: 1
Pages 19 - 22
Date: 1983
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Coverage: Canada
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