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Malik Gul Hassan Awan, Shahzada Sohail Ijaz, Muhammad Ansar, Adeel Anwar, Umber Abbasi and Hashmat Mahmood

Influence of Foliar Application of Mineral Nutrients on Biological Nitrogen Fixation of Rainfed Soybean

...re sown with and without foliar application of nutrients (Mn, Fe, Cu, Zn, P and Ca) in a sandy loam soil (Typic Ustorthents). The spray applied 0.7 g ha-1 Mn, 0.7 g ha-1 B, 0.7 g ha-1 Cu, and 1 g ha-1 Zn besides 59 g ha-1 P, and 27 g ha-1 Ca. Foliar application enhanced the nitrogen fixation in all the soybean varieties. Increase was 98% in NARC-2, 84% in Rawal-1 and 70% in Ajmeri-1. The highest N2 fixation of 68 kg ha-1 was observed in NARC-2 with