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Deficit, High‐frequency Sprinkler Irrigation of Wheat
Author(s) -
Miller D. E.,
Hang An N.
Publication year - 1982
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1982.03615995004600020035x
Subject(s) - loam , evapotranspiration , environmental science , soil water , irrigation , pan evaporation , agronomy , hydrology (agriculture) , soil science , geology , biology , ecology , geotechnical engineering
The effect of daily deficit sprinkler irrigation on the yield and quality of wheat ( Triticum aestivum L.) was evaluated using the line source technique. Studies were conducted on sandy and loam soils with much different water‐holding characteristics. Irrigation rate variables were initiated at about the time of full cover (pre‐ to early‐boot) when the soils were near the upper limit of available water. Evapotranspiration (ET) rates were estimated from evaporation pan (E p ) data as ET = 0.95 E p . On the sand, the yield and quality of wheat increased with increased application of water, up to about 100% estimated ET. On the loam soil, daily irrigations which equalled or exceeded 40% estimated ET produced similar yields. On this soil, the total water used, including water depleted from the soil, also varied over a wide range without affecting yields.