Abstract:
An experiment was conducted at Cereal Crops Research Institute, Pirsabak, Nowshera (NWFP) Pakistan during 2004-05 on seven wheat cultivars/advance lines (Saleem-2000, Raider-2000. PR-83, PR-84. PR-85. PR-86 and PR-87) to identify the most suitable time of planting and judge their performance under late sowing in the central agro-ecological zone of NWFP. Pakistan. Five planting dates were used from October 25th to December 5th with 10 days interval in a randomized complete block design with split-plot arrangement replicated thrice. Sowing dates effect was studied in main-plots and varieties/advance lines in sub-plots. Data were recorded on days to maturity. plant height,. spike length, spikelets/spike, grains/spike. 1000-grain weight and grain yield. Delay in sowing decreased values of all the parameters. Decrease in days to maturity of various cultivars ranged from 9% (PR-83) to 12% (Saleem-2000). plant height from 10.5% (PR-84) to 26% (PR-85), grains/spike from 14.6% (PR-87) to 33.4 % (Raider-2000). 1000-grain weight from 3.5% (PR-83) to 28.7% (Raider-2000) and grain yield from 45.2% (PR-83) to 59% (PR-86) when sowing was delayed from October 25th to December 5th. Larger decreases in grain yield despite comparatively smaller decreases in grains/spike and 1000-grain weight showed the importance of seed germinability and the number of productive tillers per unit area in late sowing. The significant sowing date x genotype interaction for all the parameters especially the grain yield highlighted the importance of` further research for evolving new varieties through crosses. other indigenous sources and/or introduction/selection that give higher yield if sown late in the cropping pattern of central NWFP having maize or sugarcane.
Page(s):
269-275
DOI:
DOI not available
Published:
Journal: Sarhad Journal of Agriculture, Volume: 23, Issue: 2, Year: 2007