Abstract:

A field experiment was carried out in Agronomic Research Station Karor at Layyah. Four seed rates (75kg ha-1,100kg ha-1,125kg ha-1 and 150kg ha-1) and five varieties (Akhbar-19, Bakhar Star-19, Fakhar e bhaker, TWS-15137 and TWS-15159) were selected. The experiment was based on RCBD (Randomized Complete Block Design) with two factorial arrangements and three times replication. The size of plot was 6m*1.35m (8.1m2) and the row-to-row distance of the wheat plant kept 22.5cm. The result of different seed rate treatments was significant on yield parameters of wheat.  Seed rates significantly affected grain yield of wheat ha-1. Wheat productivity could be improved with optimized seed rate for different varieties. This year study was conducted to determine the optimum seed rate for different varieties of wheat for better yield and related components. Increase in seed rate improved the number of productive tillers per m2 and grain yield of all wheat varieties although productive tillers per plant, number of grains per spike and 1000-grain weight was increased. Fakhar e Bhakkar and Bhakkar Star performed better regarding grain yield and related components among all varieties. Plant height and spike length did not affect significantly on grain and different seed rate of varieties. Correlation analysis revealed that grain yield was positively correlated with number of productive tillers per m2 during years and grain weight during year.

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