ISSN 2285-5785, ISSN CD-ROM 2285-5793, ISSN ONLINE 2285-5807, ISSN-L 2285-5785


Published in Scientific Papers. Series A. Agronomy, Vol. LVII
Written by Mehdi AZIZI, Danial SOROURI

In order to evaluation of the potassium, zinc and manganese effects on agronomic traits of soybean, a factorial experiment was conducted on 2008 growing season with three replications at Kohne-kan research field in Bojnourd, Iran. This experiment was done based on RCBD design. Treatments were, potassium in three level( 0, 80 and 160 kg/ha K2O in form of potassium sulphate fertilizer) and application of micronutrients including of, control, Zinc Librel, Manganese Librel, Zinc + Manganese Librel (1.5/1000 v/v) and also Solopotash, trade mark for soluble potassium sulphate, spraying (2/1000 v/v). Results showed potassium had no significant effects on yield, but Zn2+ + Mn2+, and Solopotash increased yield via effect on yield components. The highest seed yield was obtained from application of Solopotash alone, about 4767 kg/ha. This is a result of increasing in seed number per pod, branch number and seed weight at that treatment. The greatest seed per pod was obtained from 160 kg/ha K2O + Solopotash. Application of only Mn2+, increased the harvest index.

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