Number of microorganisms in the soil under different bean genotypes
1999
Milic, V.M. (Institute of Field and Vegetable Crops, Novi Sad (Yugoslavia)) | Mrkovacki, N.B. | Davidov, A.M. | Vasic, M.A.
Numbers of various microorganisms (total number of microorganisms, numbers of ammonifiers, azotobacters, fungi, actinomycetes and other free nitrogen-fixing bacteria) have been followed in a black meadow soil planted to eight bean varieties. Immediately before planting, been seeds have been inoculated with a microbiological preparation (NS-Nitragin for beans). Numbers of the studied microorganisms have decreased in the course of vegetation in relation to the situation immediately before planting, with the exception of the total number of bacteria which, at the end of the vegetation, reached the original sitiation immediately before the planting. On average for all varieties, the numbers of azotobacters and ammonifiers were lowest at the stage of flowering. The obtained results have shown that root exudates and plowed under corn stalks affected the numbers of the microorganisms under study.
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