THE EVALUATION OF DIFFERENT IRRIGATION REGIMS AND WATER REQUIREMENT ON YIELD AND YIELD COMPONENTS OF CORN

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FATEMI R.; KAHRARIAN B.; GHANBARI A.; VALIZADEH M.

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Journal: Year:2006 | Volume:12 | Issue:1 (SUPPLEMENT) Page(s): 133-141

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Title

THE EVALUATION OF DIFFERENT IRRIGATION REGIMS AND WATER REQUIREMENT ON YIELD AND YIELD COMPONENTS OF CORN

Author(s)

FATEMI R. | KAHRARIAN B. | GHANBARI A. | VALIZADEH M. | Issue Writer Certificate

Keywords

CORNQ2

DROGHT STRESSQ2

IRRIGATIONQ2

EVAPOTRANSPIRATIONQ2

CORRELATIONQ3

PASH ANALYSISQ2

Abstract

For evaluation of different IRRIGATION regims on yield and yield component and other traits under drought stress of CORN (zea mays L). In order, to study the effect of different IRRIGATION regims on yield and yield components of CORN hybrid (S.c704) an experiment was conducted in agricultural research station of Miyandoab during the 2001. Experimental design was split plot based on Randomized Complete Blocks (RCB) in four replications. The main plots were three IRRIGATION regims including 100,160,130 mm. Evaporation from class a pan. The sub plots were different level IRRIGATION consisting of 100, 75, 50 percentage of different level of water requirement. The results showed that grain yield of 100 mm are significantly greater than 130,160 mm. The yield achieved by 100% water requirement was 275 greater than (50%). Lesser kernel per ear and lighter kernels in 160 mm cused reduction in grain yield. Smaller length and diameter ears in 50% water requirement. Caused reduction of kernel number and reduction of kernel size resulted smaller kernels. The effect of three IRRIGATION regims and water requirement on traits was significant. The all traits had a significant CORRELATION between yield and yield components. Path analysis showed that (ASI) had the greatest negative direct effect on yield and 1000 grain weight had the positive direct effect on yield.

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