Effect of Sowing Dates on the Yield and Yield Components of Different Wheat Varieties

摘要

To study the effect of sowing date s on the yield and yield components of different wheat varieties an experiment was conducted at Malakandhar Research Farm of NWFP Agriculture University Peshawar during 1999-2000. Statistical analysis of the data revealed that different dates sowing and varieties had a significant effect on emergences m-2, number of productive tillers m-2, number of unproductive tillers m-2, spike length, grain yield and biological yield. While number of unproductive tillers m-2, days to heading and biological yield were significantly affected by interaction between different sowing date s and varieties. Mean value of the data revealed that emergence m-2 (179). spike length (11.33 cm). grain yield (3611.11 kg ha-1) and biological yield (10370.00 kg ha-1) was maximum in those plots which were sown on November 1st when compared with other sowing date s. Similarly variety Tatara-96 recorded maximum emergence m-2, days to heading, number of productive tillers m-2, spike length and grain yield when compared with other varieties under study.