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

ASIM MUHAMMAD^1,*, S. K. KHALIL¹, KHAN BAHADAR MARWAT², A.Z. KHAN¹, I.H. KHALIL³, AMANULLAH¹ AND SHAHNAZ ARIFULLAH⁴

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.    

¹Department of Agronomy, Faculty of Crop Production Sciences, NWFP Agriculture University

²Department of Weed Science, Faculty of Crop Protection Sciences, NWFP Agriculture University,

³Department of Plant Breeding & Genetics, Faculty of Crop Production Sciences,

NWFP Agriculture University, Peshawar, Pakistan.

⁴Institute of Development Studies, NWFP, Agricultural University, Peshawar, Pakistan