Effects of Deficit Irrigation and Irrigation Frequency on Wheat Yields
- 1 April 1989
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Irrigation and Drainage Engineering
- Vol. 115 (2), 172-184
- https://doi.org/10.1061/(asce)0733-9437(1989)115:2(172)
Abstract
The relationship between wheat yields and irrigation frequency was studied in a set of field experiments. Experimental plots were irrigated at intervals that ranged from two days to four weeks. The amounts of water applied ranged from zero to 100% of the full water requirement. The most significant findings of the present research are: (1) High frequency irrigation did not increase yields under full irrigation, nor did it mitigate the effects of deficit irrigation. The highest yields were attained with a relatively long irrigation interval of two weeks; (2) low irrigation frequencies did not further reduce yields under deficit irrigation. The highest water‐use efficiencies were achieved with irrigation intervals of four weeks.Keywords
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