Abstract
AbstractThe quantification of nitrogen fixation by Vicia faba inoculated with Rhizobium leguminosarum in relation to micronutrient application was assessed in pot experiments. The balance calculations showed nitrogen gains up to 260 and 478 mg N/pot respectively for soaking and foliar spray techniques using a mixture of the micronutrients Mo, Mn, Fe and Zn. The nitrogen gains obtained in treatments deficient in one micronutrient were less than those in the treatments which received the complete mixture. The stimulative effect of micronutrients on the symbiotic N fixation by the R. leguminosarum‐Vicia faba system is evident. This stimulative effect was further enhanced by incorporation of wheat straw in soil prior to the direct micronutrient application to the soil.
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