Microbiological processes in the soil under various methods of irrigation.

A study was made of the effect of various methods of irrigation on yields of spring wheat and development of soil microorganisms in the cultivated layer and the layers below of dark-chestnut soil of the Saratov Oblast. Irrigation increases the number of microorganisms in the plowed layer and the layer beneath. Sprinkling has a greater effect on yield of agricultural crops and on microbiological processes.