EVALUATION OF THE EFFECT OF IRRIGATION REGIMES ON YIELD COMPONENTS AND WATER USE EFFICIENCY OF WHEAT IN A SALINE SOIL

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ANABI MILANI A.

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Journal: Iranian Journal of Soil Research Year:2002 | Volume:16 | Issue:1 Page(s): 0-0

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Title

EVALUATION OF THE EFFECT OF IRRIGATION REGIMES ON YIELD COMPONENTS AND WATER USE EFFICIENCY OF WHEAT IN A SALINE SOIL

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ANABI MILANI A. | Issue Writer Certificate

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Abstract

The increasing demand for food as a result of population growth has led to more pressure on the limited water resources for irrigation. For this reason, increase of yield per unit of water is the more important as compared with yield per unit of land. A field experiment was conducted in Bonab to estimate water requirement of wheat and to determine the effect of various irrigation regimes on yield components, water use efficiency, changes of salts in the soil profile, and to obtain a method for irrigation scheduling by using readily available information. This experiment was conducted in randomized complete block design with four treatments (I1 to I4) and in four replications. Irrigations were applied based on the ratio of irrigation water depth to cumulative pan evaporation (ID/CPE). Irrigation water depth was taken equal to half of available water in rooting zone and constant for all treatments. Irrigations were initiated when ID/CPE reached to 0.4, 0.6, 0.8 and 1 in treatments I1 to I4, respectively. Results indicated that there were significant differences in biomass and grain yield between treatments and treatment I4 with 13.08 ton ha-1 biomass and 5.27 ton ha-1 grain yield and treatment I1 with 8.84 ton ha-1 biomass and 3.21 ton ha-1 grain yield had maximum and minimum yield respectively. Amounts of water used by the treatments from I1 to I4 during growing season were 1396, 2966, 3684 and 4526 m3 ha-1 respectively. There was a significant difference in water use efficiency (WUE) between I1 and other treatments but there was no significant difference between I2, I3 and I4. On the basis of WUE, treatment I1 with 2.26 kg m-3 and I4 with 1.163 kg m-3 had maximum and minimum WUE respectively. On the basis of 1000-grain weight and harvest index (HI), there were significant differences between treatments. Treatment I3 with 46.19 gr and I4 with 41.19 gr had maximum and minimum 1000-grain weight respectively and treatment I4 with 0.404 and I2 with 0.352 had maximum and minimum HI between treatments respectively. There was significant difference in protein content between treatments and treatment I22 with 16.23 % and treatment I1 with 13.87 % had maximum and minimum protein content respectively. Because of differences in amount of applied water between treatments, soil salinity profile was different between treatments after harvest so that salt concentrated layer in treatments I1 to I4 was in depth of 15-35, 15-35, 35-50, and 50-100 cm respectively.

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APA: Copy

ANABI MILANI, A.. (2002). EVALUATION OF THE EFFECT OF IRRIGATION REGIMES ON YIELD COMPONENTS AND WATER USE EFFICIENCY OF WHEAT IN A SALINE SOIL. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, 16(1), 0-0. SID. https://sid.ir/paper/357528/en

Vancouver: Copy

ANABI MILANI A.. EVALUATION OF THE EFFECT OF IRRIGATION REGIMES ON YIELD COMPONENTS AND WATER USE EFFICIENCY OF WHEAT IN A SALINE SOIL. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2002;16(1):0-0. Available from: https://sid.ir/paper/357528/en

IEEE: Copy

A. ANABI MILANI, “EVALUATION OF THE EFFECT OF IRRIGATION REGIMES ON YIELD COMPONENTS AND WATER USE EFFICIENCY OF WHEAT IN A SALINE SOIL,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. 16, no. 1, pp. 0–0, 2002, [Online]. Available: https://sid.ir/paper/357528/en

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