EFFECT OF MICROBIAL PREPARATIONS ON THE HUMUS BALANCE IN SOD-PODZOLIC SOIL
Journal Title: Сільськогосподарська мікробіологія - Year 2019, Vol 29, Issue
Abstract
Objective. To study the efficiency of inoculation of seeds by biological preparations under influence on humus balance in growing crops in short crop rotation. Methods. Field, laboratory, calculation-comparative. Results. It was found that the highest entrance of organic matter in the soil was due to the use of organo-mineral fertilizing system NPK-manure-green manure, which contributes to the increase of organic carbon reserves by 17.4 t/ha without the use of microbial preparations and by 18.0 t/ha against the background of microbial preparations in comparison with the mineral fertilizing system. The use of microbial preparations under the fertilizing systems NP-manure-green manure allows to increase the amount of organic matter entering the soil by 1.2 and 1.6 t/ha during crop rotation. Under the use of organic fertilizers (manure, green manure) in combination with mineral ones and seed inoculation, not only the recovery of fertility of sod-podzolic soil, but also increase in the content of humus within the limits of 0.43–0.53 t/ha is reported. The use of manure on the background of the NPK makes it possible to increase the humus reserves in the soil by 0.11 and 0.15 t/ha per year. During crop rotation, the amount of newly formed humus in this variant exceeded its mineralization loss by 0.42 t/ha without microbial preparations and by 0.58 t/ha on the background of microbial preparations. Conclusion. The positive effect of the use of biological preparations under inoculation of seeds in combination with the organo-mineral fertilizing system on the content of humus in sod-podzolic soil on average by crop rotation was established. Organic-mineral fertilizing system (NPK + manure + green manure) provides the highest growth of humus reserve in soil – 0.53 t/ha per year. The use of microbial preparations in the cultivation of crops under this fertilizing system contributes to the increase of humus content in the soil by 0.16 t/ha during crop rotation.
Authors and Affiliations
L Potapenko, N Horbachenko
Keywords
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- EP ID EP647926
- DOI 10.35868/1997-3004.29.56-61
- Views 79
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