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Description: The efficient application of water is one of the most important factors in successful crop production under irrigation. The soil in the root zone of the plants acts as a moisture reservoir and its capacity for available moisture storage is the difference in moisture content at field capacity, the upper limit, and permanent wilting point, the lower limit. Field capacity is generally understood to be the moisture content of the soil, when, following saturation, the downward percolation of water has essentially ceased. This limit in conjunction with wilting point governs the depth of water to apply during irrigation and thereby directly affects the interval between irrigations. According to Israelsen (5) the essential conditions to be observed in determining field capacity of soils in the field are the following: 1. Saturate the soil profile to the depth under study by adding an excess of irrigation water. 2. Minimize surface evaporation losses. 3. Eliminate transpiration losses by working on non cropped fields. 4. Select plots containing uniform and free draining soil. 5. Observe the time rate of decrease in moisture content.

Keywords: field and laboratory determination of field capacity
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Citation: Murray, J. M. and C. R. Shanmugham 1964. FIELD AND LABORATORY DETERMINATION OF FIELD CAPACITY. Canadian Agricultural Engineering 6(1):26-28.
Volume: 6
Issue: 1
Pages 26 - 28
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Date: 1964
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Coverage: Canada
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