THE EFFECTIVENESS OF THE USE OF EFFLUENT AS AN ORGANIC FERTILIZER IN THE CULTIVATION OF POTATOES

Abstract

Conservation and improvement of soil fertility are the main problems of rational use of land resources, increasing yields and improving soil ecology. The solution of this problem requires an integrated approach, the interaction of all parts of the farming system and, first of all, the systematic use of organic fertilizers. Such a fertilizer is a thermophilic effluent obtained in biogas plants during the processing of food plant waste, as well as animal husbandry waste.

Under the conditions of thermophilic temperature regime of fermentation in a bioreactor, a fermented disinfected organic effluent was obtained from plant food waste and cattle manure. This article studies the agrochemical composition of the resulting fertilizer, the effect on the growth processes of the potato variety Kokchetavsky ranii. 

Subsequent field experiments proved that the resulting fertilizer is environmentally safe and agronomically effective.

The organic effluent obtained in an experimental biogas plant after fermentation at a temperature of 55 ° C is deprived of the content of eggs, helminth larvae and pathogenic bacteria. Before fermentation, they are contained in the amounts of 85.7 and 26.5 units / g, (on the 7th day of fermentation) and at the end of fermentation, no helminths were detected.

As a result of anaerobic fermentation, the organic effluent obtained from plant food waste and cattle manure retains the content of the main nutrients in them at the level of: total nitrogen – 1.38, ammonium nitrogen – 0.65, phosphorus – 0.92 potassium – 4.09%.

Field studies of the agronomic effect of fermented effluent have shown its positive effect on plant growth processes.