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Irrigation Scheduling with Soil Instruments: Error Levels and Microprocessing Design Criteria

Cary, J.W. (1981) Irrigation Scheduling with Soil Instruments: Error Levels and Microprocessing Design Criteria. pp. 81-90. In: Proc. Am. Soc. Agric. Engrs., Irrig. Scheduling Conf. 1981/12.

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Abstract

Two criteria for deciding when a crop should be irrigated are: (1) the depletion of water in the root zone to some predetermined amount, or (2) the decrease of water potential at some given depth to a predetermined level. The value one chooses for either of these criteria to indicate that irrigation is needed will depend on soil properties, crop rooting characteristics and stage of plant growth. Functional relations between these two criteria and production are not yet known quantitatively, thus one cannot say that either approach is inherently better than the other. The effective application of either requires experience and judgment.

Item Type: Conference or Workshop Item (Paper)
NWISRL Publication Number: 0469
Subjects: Irrigation > Irrigation scheduling
Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:57
Last Modified: 19 Jan 2017 19:02
Item ID: 1022
URI: https://eprints.nwisrl.ars.usda.gov/id/eprint/1022

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