The research of Plant Physiology/Chemistry Section is focused on screening of newly developed CRIS strains for their tolerance against the heat, drought, salinity and nutrient stresses. To evaluate most suitable combination of NPK rates for getting better yield of seed cotton, to develop proper integrated nutrient management (IPNM) and to enhance nutrient use efficiency.
The result shows that among the tested non-Bt. genotypes CRIS-682 followed by CRIS-552, CRIS-613 performed better in yield against the heat tolerance as compared to CRIS-510 (std.) genotype and among the tested Bt. genotypes Bt.CRIS-671 performed better in yield against the heat tolerance followed by Bt.CRIS-638, Bt.CRIS-673 and Bt.CRIS-508 (Std.). On an average, the highest seed cotton yield was recorded in genotype CRIS-682 followed by CRIS-671 under normal irrigations. Also, both genotypes performed better in moderate water stress conditions. Whereas at severe water stress condition CRIS-552, CRIS-613, CRIS-510 and CRIS-682 performed well. Among the twelve (12) tested genotypes CRIS-533, CRIS-129, CRIS-585, CRIS-121 and CRIS-543 can survive under salt stress.
Dual supplementation of Boron (B) and Silicon has significant effect on the management of cotton fruiting structures and seedcotton yield. 1:1 of ammonical and nitrate based calcium ammonium nitrate (N=26%) and nitrophos (P2O5 = 20%, N = 22%) combination increased the yield of cotton crop in comparison to ammonical DAP (P2O5 = 46%, N = 18%) & urea (N = 46%).
Mr. Abdullah Keerio
Plant Physiology/Chemistry Section