Abstract

The paper studies the influence of mineral nitrogen and presowing seeds bakterization on the activity of autotrophic and heterotrophic nitrification in rhizosphere soil of winter rye plants. Increasing doses of mineral nitrogen enhance nitrification activity. Application of microbial preparation Diazobakteryn has a prolonged influence and improves nitrification process, mainly due to the increase of heterotrophic nitrification activity.

Highlights

  • Plants nitrogen nutrition level can limit optimal course of crop production processes demanding application of nitrogen fertilizers in agricultural practices

  • The paper studies the influence of mineral nitrogen and presowing seeds bakterization on the activity of autotrophic and heterotrophic nitrification in rhizosphere soil of winter rye plants

  • It is believed that autotrophic nitrification dominates in agrocenosis soils, since the presence of ammonia and lack of organic matter provides optimum living conditions for autotrophic nitrifiers

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Summary

Introduction

Plants nitrogen nutrition level can limit optimal course of crop production processes demanding application of nitrogen fertilizers in agricultural practices. Ammonia from the ammonium fertilizers can be utilized by nitrifying microorganism and oxidized during the process of nitrification. It is believed that autotrophic nitrification dominates in agrocenosis soils, since the presence of ammonia and lack of organic matter provides optimum living conditions for autotrophic nitrifiers. The main vector of biochemical activity in soil are plants that excrete into the root zone a large number of organic compounds, including those that contain nitrogen. Might create good conditions for heterotrophic nitrification progress in the area of plant roots. In this context, the aim of our study was to determine the characteristics of autotrophic and heterotrophic nitrification processes in the root zone of winter rye plants at different levels of nitrogen nutrition

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