DETERMINATION OF WATER PRODUCTION FUNCTIONS AND YIELD RESPONSE FACTOR FOR THREE COTTON CULTIVARS IN GORGAN AREA

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EMAMI AHMAD; GHAHRAMAN B.; DAVARI KAMRAN; HASHEMINIA M.; TAMASOKI S.

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Journal: Journal of Water and Soil Year:2008 | Volume:22 | Issue:2 Page(s): 295-306

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Title

DETERMINATION OF WATER PRODUCTION FUNCTIONS AND YIELD RESPONSE FACTOR FOR THREE COTTON CULTIVARS IN GORGAN AREA

Author(s)

Keywords

WATER PRODUCTION FUNCTIONQ2

YIELD RESPONSE FACTORQ2

LINE SOURCE IRRIGATIONQ3

GORGANQ3

Abstract

Deficit irrigation is a method to promote water use efficiency (WUE) in a farm under water shortage conditions, however, the consequences is that yield per area decreases. To determine production functions for three cotton cultivars, an experiment was conducted during 1381 growing season on a silty clay loam soil in HashemAbad Agricultural Research Station in GORGAN. This study was performed using a split-plot design with 3 replications on three cotton cultivars. A line-source sprinkler irrigation system was used with 54 plots in each side of the line (3cultivars* 6treatments* 3replications). To estimate root zone water deficit, climatic data and cotton crop coefficients during the growing season were used. For each cultivar second order equations were derived to relate yield and applied water. However, linear relationships were established to relate yield and evapotranspiration. In addition, based on Doorenbos and Kassam formula YIELD RESPONSE FACTORs were found to be 1.02, 0.96 and 1.01 for Sahel, Say Ocra, and 818-312 cultivars, respectively. Such YIELD RESPONSE FACTORs can be used to optimize irrigation planning under water shortage conditions.

Cites

DETERMINATION OF WATER-SALINITY PRODUCTION FUNCTION FOR TWO COTTON CULTIVARS

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APA: Copy

EMAMI, AHMAD, GHAHRAMAN, B., DAVARI, KAMRAN, HASHEMINIA, M., & TAMASOKI, S.. (2008). DETERMINATION OF WATER PRODUCTION FUNCTIONS AND YIELD RESPONSE FACTOR FOR THREE COTTON CULTIVARS IN GORGAN AREA. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), 22(2), 295-306. SID. https://sid.ir/paper/141567/en

Vancouver: Copy

EMAMI AHMAD, GHAHRAMAN B., DAVARI KAMRAN, HASHEMINIA M., TAMASOKI S.. DETERMINATION OF WATER PRODUCTION FUNCTIONS AND YIELD RESPONSE FACTOR FOR THREE COTTON CULTIVARS IN GORGAN AREA. JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY)[Internet]. 2008;22(2):295-306. Available from: https://sid.ir/paper/141567/en

IEEE: Copy

AHMAD EMAMI, B. GHAHRAMAN, KAMRAN DAVARI, M. HASHEMINIA, and S. TAMASOKI, “DETERMINATION OF WATER PRODUCTION FUNCTIONS AND YIELD RESPONSE FACTOR FOR THREE COTTON CULTIVARS IN GORGAN AREA,” JOURNAL OF WATER AND SOIL (AGRICULTURAL SCIENCES AND TECHNOLOGY), vol. 22, no. 2, pp. 295–306, 2008, [Online]. Available: https://sid.ir/paper/141567/en

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