Scheduling Irrigations Using Climate-Crop-Soil Data

Jensen, Marvin E. and Robb, David C. N. and Franzoy, C.E. (1970) Scheduling Irrigations Using Climate-Crop-Soil Data. Proceedings of the American Society of Civil Engineers, Journal of the Irrigation and Drainage Division. 96(IRI):25-38.

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Abstract

Recent studies of surface irrigation systems (16,21,29) 4 indicate that irrigation
scheduling practices, tithing and amount applied, have not changed significantly
from those observed about 25 yr ago by Israelson, et al. (11).
Attempts to relate observed irrigation efficiencies to field, soil, crop, and
management characteristics generally have not been successful because the
factors causing the large variations in timing and amount of water applied at
each irrigation are so diverse that the resulting irrigation efficiencies appear
to be random events with a broad, uniform distribution. The potential for better
irrigation water management has; however, increased substantially during the
past 15 yr because of better water control and measurement facilities (24),
improved system design criteria (2), more reliable methods for estimating
evapotranspiration (13), increased knowledge of each crop's response to soil
moisture levels (9), and commercially available soil moisture instrumentation
for timing irrigations (10).

Item Type:	Article
NWISRL Publication Number:	0159
Additional Information:	Digest: Trans. Am. Soc. Civ. Engr. 136:524-525, 1971.
Subjects:	Irrigation > Irrigation scheduling Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:58
Last Modified:	25 Oct 2016 18:07
Item ID:	1207
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1207