Agrochemical assessment of fertilizer systems in crop rotation of Polissia]{Agrochemical assessment of fertilizer systems in crop rotation of Polissia

Abstract

The purpose. To determine efficiency of fertilizer systems upon ecological and agrochemical state of soil in crop rotation of Polissia. Methods. Field, agrochemical, mathematical-and-statistical. Results. It is proved that intensity of balance of nutrients and humus completely depends on a share of organic chemistry in fertilizer system. Conclusions. Positive balance of humus (0,73 t/hectare) is observed at organic-and-mineral system (75% of organic and 25% of mineral fertilizers). Organic fertilizer system (dung – 50 t/hectares) ensures mid-annual balance of humus of 0,66 t/hectare. Organic-and-mineral system (50% of organic and 50% of mineral fertilizers) secures the balance of humus in norm of 0,46 t/hectare.