Microflora, enzyme activity and humus status indices of agro dark humus bleached soil under the conditions of phytomeliorative experiment

Changes in the number and composition of microflora of agro dark humus bleached soil in the cultivation of various phytomeliorants in the conditions of short-term field experiments are established (1 и 3 years) are established. On the variants with the sowing of phytomeliorants, there is a pronounced tendency for an increase in the content and reserves of humus as compared with the control. Changes in the indicators of the humus state and microbiological activity of the soils were traced. Under the conditions of one-year experience, the highest number of ammonifying microorganisms showed the variant with buckwheat. This led to increased activity of polyphenol oxidases and more intensive accumulation of humus. The mineralization ratio decreased markedly. The mobility of humic acids increased as compared with the control; the humus system was in an unstable state. In the variant with sowing of clover, the mineralization processes were most pronounced due to the decrease in the share of ammonifiсators, but due to the low activity of peroxidase, the humus accumulation coefficient had average values...