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