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Journal of Agronomy
Year: 2003  |  Volume: 2  |  Issue: 3  |  Page No.: 146 - 152

Influence of Planting Date and Plant Density on Morphological Traits of Determinate and Indeterminate Soybean Cultivars under Temperate Environment

Amir Zaman Khan, P. Shah, Shad K. Khalil and F. H. Taj    

Abstract: Determinate and indeterminate soybean types [Glycine max (L) Merrill] have different growth habits. One determinate (Epps, MG V) and one indeterminate (Williams 82, MG 111) cultivars were planted from May to August at one month interval using plant densities of 20, 40 and 60 plants m-2 to determine the growth behavior of cultivars. Number of days to emergence, unifoliate and 6th trifoliate leaf formation were reduced in both cultivars with delay in sowing. Early planted crop in May attained more plant height than delayed planted crop. Highest plant density of 60 plants m-2 attained maximum plant height as compared with the lowest plant densities. Epps produced the tallest plants as compared with Williams 82. The number of days to maturity declined with each successive planting date for both cultivars. The maturity date of Williams 82 was affected more by planting date than that of Epps.

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