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

https://doi.org/10.31073/agrovisnyk201804-13
Matvijchuk N. G.
Pages: 78-82.

Full article: 
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.

Key words: fertilizer system, nitrogen, phosphorus, potassium, humus, intensity of balance.

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