Determination of Crop Water Productivity of Different Soybean Varieties in District Swat of Pakistan

Abstract

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 determine the yield response factor on maximum, optimal and minimum irrigation levels of soybean varieties, using two varieties (swat 84 and malakand 96) having four replicates and four irrigation levels. Crop water prodcuctivity were were determined from crop yield divided Seasonal water applied. CWP was recorded minimum 0.58 kg m^-3 for (swat 84) varieties V₁ and maximum 0.82 kg m^-3for V₂ (malakand 96) varieties (Table 1). Mean of I₄₀, I₆₀, I₈₀, I₁₀₀ were 0.58,0.62, 0.71 and 0.75 respectively. Lower CWP values of V₁ and highest value for V₂ were determined.Hence it is concluded that among both the varieties V₂ performed better on irrigation two (V₂I₄), therefore this strategy is recommended for irrigated areas of Khyber Pakhtunkhwa, Pakistan

Keywords: Deficit irrigation, Irrigation levels, water productivity, soybean.