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Effect of Foliar Feeding on Nitrogen Assimilation in Alfalfa Plants at Insufficient Molybdenum Supply


The influence of foliar feeding on the nitrogen assimilation in alfalfa plants under conditions of Mo shortage was studied. It was established that foliar fertilization with 0.3% solution of Agroleaf ® resulted in increase of nitrogen fixation and nitrogen assimilation in the absence of Mo. Insufficient molybdenum supply leads to significant reduction of plant Mo content and nitrogen-fixing activity, while stress induced amino acids as alanine, GABA, threonine, proline and serine increased repeatedly. The negative effect of Mo deficiency on the enzyme activities related to the primary nitrogen assimilation (NR, GS, GOGAT) and plant growth diminished due to the foliar absorbed nutrients.


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Correspondence to Ira Stancheva.

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Hristozkov, M., Geneva, M. & Stancheva, I. Effect of Foliar Feeding on Nitrogen Assimilation in Alfalfa Plants at Insufficient Molybdenum Supply. BIOLOGIA FUTURA 60, 211–219 (2009).

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  • Alfalfa
  • Mo deficiency
  • foliar feeding
  • nitrogen assimilation
  • nitrogen fixation