Effect of sowing date on growth and yield of Brassica Campestris L. var. yellow sarson

摘要

Plant height, branch and leaf number, leaf area and biomass increased under early sowing, but at later harvests leaf number and their area decreased. The RGR of early sown plants was higher in the beginning. The value of NAR of Pys-6 at late sowing appeared corroborative to biomass and RGR increase. From the data on LAR, adaptability of the varieties under late sowing was evident. The S/R ratio was minimum in late sown plants. Late sowing caused more chlorophyll development. Plant sown early took less time for flowering while it was delayed by 5-7 days when sown late Variety Pys-6 took minimum time for flowering. The number of fruits and seeds were higher in timely sowing whereas 100-seed weight was better in late ones. Variety Saidpur local had more seeds and higher seed weight whereas Pys-6 appeared with more fruits.