[Effect of inoculation on nitrogen fixation by chick pea, on its crop and protein content]

Active strains of Rh. cicer were found to increase the crop of chick pea by 25--36%, the content of protein by 2--6%, and the content of total nitrogen in the roots by 1.7--2%. Symbiotic fixation of nitrogen determined by a technique of "inoculation" varies within 40--60% depending on the activity of the strain. No correlation has been established between the effectiveness of the strains of nodule bacteria and the activity of their enzymes--dehydrogenases.