THE EFFECT OF PLANT DENSITY AND WATER STRESS DURING VEGETATIVE PHASE ON GRAIN YIELD, YIELD COMPONENTS AND WATER USE EFFECIENCY OF MAIZE

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EMAM Y.; RANJBAR G.H.

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Journal: Iranian Journal of Crop Sciences Year:2000 | Volume:2 | Issue:3 Page(s): 50-62

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Title

THE EFFECT OF PLANT DENSITY AND WATER STRESS DURING VEGETATIVE PHASE ON GRAIN YIELD, YIELD COMPONENTS AND WATER USE EFFECIENCY OF MAIZE

Author(s)

EMAM Y. | RANJBAR G.H. | Issue Writer Certificate

Keywords

MAIZEQ3

DROUGHT STRESSQ2

PLANT DENSITYQ3

VEGETATIVE GROWTHQ2

GRAIN YIELDQ2

Abstract

Coincidence of MAIZE cultivation with other crops such as rice and summer cash crops causes the vegetative phase of MAIZE being faced with moisture deficit stress. To investigate the effect of PLANT DENSITY and water deficit during vegetative phase on MAIZE GRAIN YIELD and its components, a field experiment was conducted in experimental farm at College of Agriculture, Shiraz University located at Kooshkak (longitude 520; 35" E, and latitude 300 4' N) during summer 1999. The treatments were two levels of PLANT DENSITY 6.67 and 13.34 plants m-2) and three levels of water stress (supply of 50, 75, and 100 percent crop water requirement) in a Randomized Complete Block Design arranged as factorial with three replicates. The results showed that water stress decreased husks dry weight and ear diameter, significantly. At higher PLANT DENSITY dry weight of ear, husk, ear with husk and cob decreased significantly. Water stress caused decreased in GRAIN YIELD per unit area. In the present study, higher PLANT DENSITY increased the GRAIN YIELD. Low water availability was associated with higher harvest index and water use efficiency. Water use efficiency was also increased at higher PLANT DENSITY. Considering the results of present study, it appears that in MAIZE plant densites usually practiced, water stress occurred before tassel emergence may decrease GRAIN YIELD up to 14%. The adverse effects of water deficit at higher densities may be alleviated by increased water use efficiency.

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APA: Copy

EMAM, Y., & RANJBAR, G.H.. (2000). THE EFFECT OF PLANT DENSITY AND WATER STRESS DURING VEGETATIVE PHASE ON GRAIN YIELD, YIELD COMPONENTS AND WATER USE EFFECIENCY OF MAIZE. IRANIAN JOURNAL OF CROP SCIENCES, 2(3), 50-62. SID. https://sid.ir/paper/57130/en

Vancouver: Copy

EMAM Y., RANJBAR G.H.. THE EFFECT OF PLANT DENSITY AND WATER STRESS DURING VEGETATIVE PHASE ON GRAIN YIELD, YIELD COMPONENTS AND WATER USE EFFECIENCY OF MAIZE. IRANIAN JOURNAL OF CROP SCIENCES[Internet]. 2000;2(3):50-62. Available from: https://sid.ir/paper/57130/en

IEEE: Copy

Y. EMAM, and G.H. RANJBAR, “THE EFFECT OF PLANT DENSITY AND WATER STRESS DURING VEGETATIVE PHASE ON GRAIN YIELD, YIELD COMPONENTS AND WATER USE EFFECIENCY OF MAIZE,” IRANIAN JOURNAL OF CROP SCIENCES, vol. 2, no. 3, pp. 50–62, 2000, [Online]. Available: https://sid.ir/paper/57130/en

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