Simple Irrigation Scheduling Calendars
Publication: Journal of Irrigation and Drainage Engineering
Volume 122, Issue 2
Abstract
Simple calendars are described that express best dates of irrigation based on long-term weather data. The calendars are intended to promote easy and ready adaption of improved water management practices by farmers in both developed and developing countries by presenting simplified, nontechnical scheduling guidance. The calendars are developed using a daily soil-water balance-crop yield model. Once developed, the calendars require no updating and no further input by technical personnel. Calendars are developed for several planting dates, soil types and initial water contents. Developed calendars graphically show recommended irrigation occurrences expressed in days or weeks after sowing that correspond with the type of irrigation water delivery schedule utilized. The calendars are generalized as much as possible to promote widespread public usability. The graphical nature of the calendars encourages use by illiterate or semiliterate farmers. The methodology demonstrated is transferable to any site where sufficient weather data are available.
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References
1.
Hill, R. W., and Choudhary, R. (1990). “Irrigation scheduling practices review and development of recommended improved irrigation management programs.”Final Rep. to Command Water Mgmt. Proj., U.S. Agency for Int. Develop., CWD-ARD Inc., Lahore, Pakistan.
2.
Hill, R. W., Hanks, R. J., and Wright, J. L. (1984). “Crop yield models adapted to irrigation scheduling programs.”Final Rep., USDA ARS Cooperative Res. No. 58-9AHZ-9-440, Utah Agric. Experiment Station Res. Rep. No. 99, (User Manual: Res. Rep. No. 100), Utah State Univ., Logan, Utah.
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Trimmer, W. L. (1988). “Partial irrigation and its application in Pakistan.”Res. Rep., Univ. of Idaho, Irrig. Systems Mgmt., Lahore, Pakistan.
4.
Trimmer, W. L.(1990). “Applying partial irrigation in Pakistan.”J. Irrig. and Drain. Div., ASCE, 116(3), 342–353.
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Copyright
Copyright © 1996 American Society of Civil Engineers.
History
Published online: Mar 1, 1996
Published in print: Mar 1996
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