DEVELOPMENT OF MICROORGANISMS AND TRENDS OF BIOLOGICAL PROCESSES IN LEACHED CHORNOZEM UNDER SIMULATION OF DEFICIENCY OF THE FRESH ORGANIC MATTER AND THE INFLUENCE OF MINERAL NITROGEN
Journal Title: Сільськогосподарська мікробіологія - Year 2018, Vol 28, Issue
Abstract
Objective. Study the peculiarities of the development of microorganisms and trends of biological processes in the soil under the influence of mineral nitrogen under the conditions of simulation of the deficiency of fresh organic matter. Methods. Microbiological, agrochemical, gas chromatographic, statistical. Results. In the conditions of the vegetative experiment under the simulation of the deficiency of fresh organic matter (preparation of soil in accordance with the method of determining the content of humus) in the leached chornozem, the effect of increasing doses of mineral nitrogen on the dynamics of the number of representatives of certain ecological trophic groups of microorganisms and the course of soil-biological processes that accompany the mineralization of humus was studied. Nitrogen fertilizers, under given conditions, stimulate the development of ammonifiers, microorganisms that mainly utilize mineral compounds of nitrogen, denitrifiers, cellulolytic bacteria, activates biological nitrogen and carbon dioxide emission processes. In this case, the need for carbon to provide metabolic processes of microorganisms can meet only at the expense of destruction of humus compounds. When the fresh organic matter is introduced in the soil in the form of straw chopped to sawdust, as well as under the growth of barley, the activity of biological denitrification is reduced. At the end of the experiment, the content of total carbon in the soil has a clear tendency to decrease with increasing doses of mineral nitrogen – according to the variants: without fertilizers, control – 2.97 %, 13 mg N/kg of soil – 2.91 %, 26 mg N/kg – 2.88 %, 39 mg N/kg – 2.85 %. Conclusion. Under the deficiency of fresh organic matter in leached chornozem, the depleted use of mineral nitrogen fertilizers, especially in large quantities, leads to the creation of a situation where microorganisms for the maintenance of metabolic needs use carbon-preservative organic compounds. The use of mineral nitrogen, not coordinated with the required amount of fresh organic matter, leads to the initiation of dehumidification processes. To prevent such effects, environmentally sound fertilizer systems for crops should include systematic entry of fresh organic matter into the soil.
Authors and Affiliations
V Volkohon, T Brytan, O Pyrih
Keywords
Related Articles
- EP ID EP498013
- DOI -
- Views 59
- Downloads 0
INFLUENCE OF BIOPREPARATION RHYZOHUMIN AND PLANT GROWTH REGULATOR BIOGLOBINE ON SYMBIOTIC NITROGEN-FIXING SYSTEM AND YIELD OF SOYBEAN
The paper presents the results of study on the influence of pre-sowing treatment of soybean seeds with the microbial preparation Rhyzohumin and growth regulator Bioglobine, and their separate application (Rhyzohumin was...
FEATURES OF APHIS FABAE DEVELOPMENT AND BIOCONTROL OF ITS NUMBER ON RED BEET CROPS
Biological features, population dynamics and harmfulness of Aphis fabae on red beet crops in Ukrainian Woodlands were specified. The degree of phytophag population on red beet of the varieties of different maturity group...
EVALUATION OF PHYTOSANITARY STATUS OF AGROCENOSES OF POME FRUITS OF THE CHERNIVTSI REGION
Local selective phytovirological studies of plantations of pome fruits (apples, pears, quinces) for the presence of chlorotic maculation virus of the leaves of apple tree, apple tree mosaic virus, apple tree bark striati...
THE EFFECT OF MONOSACCHARIDES CONTAINING GLUCOSE AND GALACTOSE ON THE DEVELOPMENT OF BRADYRHIZOBIUM JAPONICUM IN VITRO
The effect of monosaccharides containing of glucose and galactose (glucose, N-acetyl-D-glucosamine, galactose, N-acetyl-D-galactosamine) which are the major part of exopolysaccharides of Bradyrhizobium japonicum 634b in...
MIGRATION OF BIOGENIC ELEMENTS COMPOUNDS IN THE APPLICATION OF COMPLEX INOCULANT FOR SOYBEAN
In lysimetric experiment with soybean, the effect of complex inoculants based on Bradyrhizobium japonicum and Azospirillum brasilense on the vertical migration of biogenic elements have been studied. When growing without...