Variation Within Measured and Estimated Consumptive Use Requirements

Allen, Richard G. and Wright, James L. (1983) Variation Within Measured and Estimated Consumptive Use Requirements. pp. 1-12. In: Proc. Specialty Conference on Advances in Irrigation and Drainage: Surviving External Pressures. USA-WY-Jackson, 1983/07/20-22.

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Abstract

Statistical analyses of alfalfa water use measured at Kimberly,
Idaho indicate that a modified Penman combination equation and the
FAO-Blaney-Criddle with daily or monthly weather data replicate
underlying population variances reasonably well, with the combination
method being about 30% low. Statistics generated using the
SCS-Blaney-Criddle or the FAO-Blaney-Criddle where only air temperature
is available on a daily or monthly basis indicate that variances
calculated from estimates by these equations are much less than
variances of the underlying population (measured values). Standard
deviations or variances of estimated ET values should be adjusted based
on lysimeter measurements before probability tables or frequency
analyses are generated.

Item Type:	Conference or Workshop Item (Paper)
NWISRL Publication Number:	0511
Subjects:	Mass Import - unclassified
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:57
Last Modified:	19 Jan 2017 18:26
Item ID:	1033
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1033