Impact of Deficit Irrigation on Soybean Water Requirement and Yield in District Swat

A field study was conducted on clay loam soil at the Agriculture research institute, Swat during Kharif 2012. Main objective of the study was to compare the physiological parameter and yield of soybean using two varieties (swat 84 and malakand 96) having four replicates and four irrigation level. The mean of days to emergence for I 40 , I 60 , I 80 , I 100 were 7, 6, 7 and 6 respectively. Days to emergence m -2 mean for I 40 , I 60 , I 80 , I 100 were 17, 15, 16 and 16 respectively. The mean of plant height for I 40 , I 60 , I 80 , I 100 were 69, 71, 71 and 74 respectively. Days to anthesis mean for I 40 , I 60 , I 80 , I 100 were 73, 76, 76 and 77 respectively. Days to maturity, mean for I 40 , I 60 , I 80 , I 100 were 95, 98, 96 and102 respectively. The plant height and days to maturity were found statistically significant (P ? 0.05) for the selected soybean varieties Results showed that among both the varieties V 2 performed better on irrigation four (V 2 I 100 ) therefore, it is recommended for irrigated areas of Khyber Pakhtunkhwa.