Effect of Different Sowing Dates on Seed Index, Lint and Ginning Out-turn of Various Cotton Varieties

摘要

The field experiment was conducted to study the effects of sowing date s on seed index, lint index and ginning out-turn of three cotton varieties. The study revealed that the sowing date s produced significant difference in above parameters. The sowing on 10^th May produced heavier seed index (8.21g), maximum lint index (4.04 g) and high ginning Out-turn percent (33.98). Among the genotypes, Rehmani performed better in seed index (8.48g), lint index (4.04g) and G.O.T. percent (33.71). It is recommended that for lower part of Sindh, Pakistan, the cotton crop may be planted in early to mid of May month. Very early and delayed sowings reduces cotton crop yield due to change in environmental factors of the region, which in turn affects plant`s life cycle and vigorous growth.