EFFECT OF PLANT DENSITY AND PLANTING ARRANGEMENT ON GRAIN YIELD AND GROWTH INDICES OF CORN UNDER REDROOT PIGWEED (AMARANTHUS RETOFLEXUS L.) COMPETITION

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YADAVI A.R.; AGHA ALIKHANI M.; GHALAVAND A.; ZAND ESKANDAR

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Journal: AGRICULTURAL RESEARCH Year:2006 | Volume:6 | Issue:3 Page(s): 31-46

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Title

EFFECT OF PLANT DENSITY AND PLANTING ARRANGEMENT ON GRAIN YIELD AND GROWTH INDICES OF CORN UNDER REDROOT PIGWEED (AMARANTHUS RETOFLEXUS L.) COMPETITION

Author(s)

YADAVI A.R. | AGHA ALIKHANI M. | GHALAVAND A. | ZAND ESKANDAR | Issue Writer Certificate

Keywords

CORNQ2

RED ROOT PIGWEEDQ3

PLANT DENSITYQ3

PLANTING PATTERN AND COMPETITIONQ3

Abstract

In order to study the effect of planting arrangement and PLANT DENSITY on yield and growth indices of grain CORN (three way cross 647 hybrid) under redroot pigweed competition a field experiment was carried out at Kabotar-Abad experimental station, agricultural research center of Esfahan in 2003. Treatments were arranged in a factorial split experiment based on RCBD with three replications. Factorial arrangement of CORN densities (74000 and 111000 plant ha-1) and planting patterns (single row, rectangular twin row and zigzag twin row) formed the main plots. Sub-plots were referred to pigweed densities (0, 4, 8 and 12 plant per m of row). Results showed that leaf area index (LAI), total dry matter accumulation (TDM), crop growth rate (CGR), and grain yield of CORN decreased by presence of RED ROOT PIGWEED. All variables in higher CORN density were more than low CORN density and reduction of LAI, TDM, CGR and grain yield of CORN under pigweed competition decreased with increasing CORN density. Among different CORN arrangements, twin row planting and especially zigzag twin row increased all CORN traits, in such a manner that twin row planting arrangement decreased the pigweed competition effect on these traits.

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APA: Copy

YADAVI, A.R., AGHA ALIKHANI, M., GHALAVAND, A., & ZAND, ESKANDAR. (2006). EFFECT OF PLANT DENSITY AND PLANTING ARRANGEMENT ON GRAIN YIELD AND GROWTH INDICES OF CORN UNDER REDROOT PIGWEED (AMARANTHUS RETOFLEXUS L.) COMPETITION. AGRICULTURAL RESEARCH, 6(3), 31-46. SID. https://sid.ir/paper/84817/en

Vancouver: Copy

YADAVI A.R., AGHA ALIKHANI M., GHALAVAND A., ZAND ESKANDAR. EFFECT OF PLANT DENSITY AND PLANTING ARRANGEMENT ON GRAIN YIELD AND GROWTH INDICES OF CORN UNDER REDROOT PIGWEED (AMARANTHUS RETOFLEXUS L.) COMPETITION. AGRICULTURAL RESEARCH[Internet]. 2006;6(3):31-46. Available from: https://sid.ir/paper/84817/en

IEEE: Copy

A.R. YADAVI, M. AGHA ALIKHANI, A. GHALAVAND, and ESKANDAR ZAND, “EFFECT OF PLANT DENSITY AND PLANTING ARRANGEMENT ON GRAIN YIELD AND GROWTH INDICES OF CORN UNDER REDROOT PIGWEED (AMARANTHUS RETOFLEXUS L.) COMPETITION,” AGRICULTURAL RESEARCH, vol. 6, no. 3, pp. 31–46, 2006, [Online]. Available: https://sid.ir/paper/84817/en

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