Influence of planting date and plant density on morphological traits of determinate and indeterminate soybean cultivars under temperate environment
2004
Khan, A.Z. | Shah, P. | Khalil, S.K. (NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of Agronomy) | Karim, F.
Determinate and indeterminate soybean types [Glycine max (L) Merrily have different growth habits. To determine the growth behavior of different cultivars, 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 in, at Malakandher Farm, NWFP Agricultural University, Peshawar during 1997 and 1998. Number of days to emergence, unifoliolate and 6th trifoliolate leaf formation was 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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