NUTRITIONAL QUALITY AND PRODUCTION OF SOYBEAN LAND RACES AND IMPROVED VARIETIES AS AFFECTED BY PLANTING DATES

Abstract

Information is lacking on nutritional quality of indigenous land races of soybean. Three land races (Kulat brown, Kulat white, Mothi) and two improved varieties (NARC-II, Swat-84) of soybean were sown on April 2, May 2, June 2 and July 2, at New Developmental Farm of NWFP Agricultural University, Peshawar, during 2004-05 and 2005-06 growing season. Planting dates had significantly affected oil and protein content and yield. Maximum protein content (321g kg-1) and protein yield (468 kg ha-1) was recorded for April planting, while maximum oil content (169 g kg-1) and oil yield (244 kg ha-1) was obtained from May planted crop. Maximum oil (17.2 g kg-1) and protein (320 g kg-1) was recorded for variety Swat-84 while higher oil (239 kg ha-1) and protein yield (433 kg ha-1) was given by NARC-II. Improved varieties were superior in nutritional quality as well as nutrient production.