INFLUENCE OF FERTILIZING SYSTEMS AND MICROBIAL PREPARATIONS ON CAPACITY OF BIOENERGETIC CULTURES
Journal Title: Сільськогосподарська мікробіологія - Year 2018, Vol 28, Issue
Abstract
Objective. Study capacity of bioenergetic cultures in different fertilizing systems in combination with microbial preparations in soil and climatic conditions of Polissia. Methods. Field, laboratory, computational, mathematical and statistical. Results. The influence of fertilizing systems and microbial preparations during cultivation of switch grass and sward grass in the soil and climatic conditions of Polissia has been shown. It was established that under cultivation of energy crops, it is expedient to use fertilizing system, which involves introduction 10 t/ha straw, biomass of intermediate lupine manure and mineral fertilizers in the ratio of N40P15K60. Treatment of rhizomes of sward grass and seeds of switch grass with microbial preparations Mikrohumin and Polimiksobakteryn allow to reduce the ratio of mineral fertilizers by 20 kg/ha active substance and contributes to increasing the capacity of bioenergy crops, the release of solid fuels and energy from their biomass. An alternative fertilizing system, where mineral fertilizers were partially replaced by microbial preparations (such as Polimiksobakteryn and Mikrohumin), contributed to the largest increase of yield of switch grass in the study (dry matter) – 1.14 times and of sward grass – 1.15 times compared to the traditional fertilizing system (control). Conclusion. It has been established that under the cultivation of new varieties of energy crops, it is expedient to use organic fertilizers (straw, green manure) and treat seeds of switch grass and rhizomes of sward grass with microbial preparations Mikrohumin or Polimiksobakteryn. This fertilizing system ensures a 14 % increase in the capacity of switch grass, and 14-16 % increase for sward grass compared to the traditional fertilizing system (animal manure + NPK). In this case, the maximum calculated yield of solid fuel and energy from switch grass biomass was obtained, respectively – 10.1 t/ha and 161.6 GJ, and sward grass – 14.4-14.6 t/ha and 230.6-234.1 GJ, that is 13 and 13-15 % higher than parameters of the system “animal manure + NPK”.
Authors and Affiliations
L Skachok, N Horbachenko
Keywords
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