Response of periodic dry matter partitioning and crop growth rate on yield of wheat (Triticum aestivum L.) cultivars as influenced by tillage techniques.

摘要

Studies were conducted during 2004-05 to determine the effect of two tillage systems (zero and conventional) and five wheat cultivars viz. PBW-343, Raj-3077, HD-2329, WH-542 and RSP-303 on dry matter partitioning and crop growth rate (CGR) of wheat (Triticum aestivum L.). The results revealed that the periodic dry matter partitioning and CGR did not differ significantly by the tillage systems, whereas, the cultivars were significantly influenced with respect to these parameters. Out of the two tillage systems, zero till wheat recorded higher dry matter accumulation in different parts of the plants and CGR at all stages of development. Similarly, wheat cultivar PBW-343 recorded the higher dry matter accumulation at 30, 60, 90, 120 and 150 days after sowing compared with WH-542, HD-2329, RSP-303 and Raj-3077. However, similar trend of CGR was observed with respect to wheat cultivars except at 120-150 days after sowing where the difference among the cultivars was not significant.