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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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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

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