scholarly journals Experimental studies of biological product Extracon to produce composts from green manure crops

2020 ◽  
pp. 44-50
Author(s):  
A. O. Pariev ◽  
J. А. Filonenko ◽  
N. V. Patyka N. V.
Keyword(s):  
Green Manure ◽  
Soil Microorganisms ◽  
Experimental Studies ◽  
Plant Residues ◽  
Biological Product ◽  
Temperature Regimes ◽  
Decomposition Of Organic Matter ◽  
Plant Remains ◽  
Compost Plant ◽  
Crop Waste

Annotation Purpose. Establishment of regularities of bioconversion of plant residues in the processes of accelerated biological composting of crop waste using the drug Extracon on the basis of a consortium of soil microorganisms and substantiation of the main provisions of the process. Methods. Experimental studies were carried out in a way of determining the regularities of biothermal processes, the kinetics of temperature regimes and decomposition of organic matter of green manure, as well as changes in the physicochemical properties of compost from the duration of its production. Results. Laboratory researches on composting of plant remains by means of a biological product on the basis of a consortium of soil microorganisms are carried out, results of researches are analyzed and the maintenance of nutrients in ready compost is defined. Conclusions. The results of laboratory researches on compost preparation with the help of biological product Extracon on the basis of a consortium of soil microorganisms are analyzed. It is established that the use of a biological product based on a consortium of soil microorganisms Extracon optimizes biological processes and creates conditions for complete transformation (return to the biological cycle) of plant residues (green manure – clover) within two months from the composting process. Keywords: biological product Extracon, biothermal composting, compost, plant residues.

scholarly journals ORGANIC CARBON DYNAMICS IN GRASSLAND SOILS. 1. BACKGROUND INFORMATION AND COMPUTER SIMULATION

1981 ◽  
Vol 61 (2) ◽  
pp. 185-201 ◽  
Author(s):  
J. A. VAN VEEN ◽  
E. A. PAUL
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Experimental Studies ◽  
Decay Rates ◽  
Background Information ◽  
Plant Residues ◽  
Decomposition Rates ◽  
Straw Decomposition ◽  
Soil Biomass ◽  
The World

The decomposition rates of 14C-labelled plant residues in different parts of the world were characterized and mathematically simulated. The easily decomposable materials, cellulose and hemicellulose, were described as being decomposed directly by the soil biomass; the lignin fraction of aboveground residues and the resistant portion of the roots entered a decomposable native soil organic matter. Here it could be decomposed by the soil biomass or react with other soil constituents in the formation of more recalcitrant soil organic matter. The transformation rates were considered to be independent of biomass size (first–order). Data from 14C plant residue incorporation studies which yielded net decomposition rates of added materials and from carbon dating of the recalcitrant soil organic matter were transformed to gross decomposition rate constants for three soil depths. The model adequately described soil organic matter transformations under native grassland and the effect of cultivation on organic matter levels. Correction for microbial growth and moisture and temperature variations showed that the rate of wheat straw decomposition, based on a full year in the field in southern Saskatchewan, was 0.05 that under optimal laboratory conditions. The relative decay rates for plant residues during the summer months of the North American Great Plains was 0.1 times that of the laboratory. Comparison with data from other parts of the world showed an annual relative rate of 0.12 for straw decomposition in England, whereas gross decomposition rates in Nigeria were 0.5 those of laboratory rates. Both the decomposable and recalcitrant organic matter were found to be affected by the extent of physical protection within the soil. The extent of protection was simulated and compared to data from experimental studies on the persistence of 14C-labelled amino acids in soil. The extent of protection influenced the steady-state levels of soil carbon upon cultivation more than did the original decomposition rates of the plant residues.

scholarly journals Ability of the soil cellulolytic bacteria to colonize endophytic niche of barley grains

2020 ◽  
Author(s):  
O.V. Sviridova ◽  
◽  
N.I. Vorobyov ◽  
Ya.V. Pukhalsky ◽  
O.N. Kurchak ◽  
...  
Keyword(s):  
Micrococcus Luteus ◽  
Growing Season ◽  
Barley Straw ◽  
Mineral Fertilizers ◽  
Plant Residues ◽  
Cellulolytic Bacteria ◽  
Biological Product ◽  
Presowing Treatment ◽  
Pure Cultures ◽  
Barley Grains

To identify microorganisms that can penetrate into the endophytic niche of the grain of barley plants, many years of vegetative experiments were conducted on sod-podzolic soil without the use of mineral fertilizers. In the non-growing season, a biological product, consisting of cellulolytic association of bacteria with genotypic passport, decomposed barley straw. Presowing treatment of seeds was not carried out, therefore, during the growing season; local microorganisms decomposing plant residues could be present in the barley rhizosphere. After six years of rotation of barley plants, the microbiological composition of its seed niche was studied. As a result, it was found that in the seeds of barley bacteria are present in an amount of 240 ± 20 CFU/g of grain. Isolated pure cultures of microorganisms were identified as Cellulomonas gelida, Micrococcus luteus and Bacillus licheniformis by the sequence of ITS fragments of 16S rRNA. These types of bacteria were also present in the used biological product. Based on the research conducted, it can be assumed, that permanent cultivation of barley plants and sowing of seeds of the previous year can contribute to the formation of effective microbial and plant biosystems that are resistant to environmental stress.

scholarly journals Influence of green manure phytomass treatment by microbial preparations on grain productivity and quality indicators of winter wheat

2020 ◽  
Author(s):  
A.V. Prikhodko ◽  
◽  
I.A. Kameneva ◽  
A.I. Yakubovskaya ◽  
N.V. Karaeva ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Green Manure ◽  
Organic Fertilizer ◽  
Point Of View ◽  
Plant Residues ◽  
Net Income ◽  
Economic Point ◽  
Yield Increase ◽  
Stage Of Development ◽  
Biological Preparation

Treatment of the triticale phytomass with the complex biological preparation KBP-5M before incorporation into the soil contributed to the activation of microbiological processes in the 0-30 cm layer. In the variants when the plant was in the phenological stage of spike emergence, we noted an increase in the content of N-NO3 by 0.19-0.46 mg per 100 g of soil; Р2О5 – up to 2.97; K2О – up to mg/100 g. The reason for that was the maximum accumulation of organic matter in the phytomass of triticale at the aforementioned stage of development (8.25-8.52 t/ha). The use of KBP-5M had a positive effect on the development of winter wheat when green manure was the preceding crop. There is a tendency to increase the density of the stalk by 13.3 %, including productive stems – by 3.9 % and the number of grains from 10 plants – by 1.7 % compared to the use of triticale plants as an organic fertilizer without the treatment with biological preparation. Despite the trend of increasing yields from 4.32 to 4.43 t/ha, no reliable yield increase was obtained. When applying KBP-5M on triticale plant residues, there was an increase in protein content by 0.3 % and gluten – by 1.1 % compared to variants without the biological preparation. According to the indicators of 1000-grain weight and hectolitre weight, there were no significant differences between the studied variants. The use of KBP-5M has been justified from an economic point of view since 277 to 1535 rubles per ha of contingent net income was obtained and the payback ratio for the use of the biological product was 1.05–5.79.

The influence of soil conditions on the decomposition of organic matter in the soil

1917 ◽  
Vol 8 (3) ◽  
pp. 385-417 ◽  
Author(s):  
E. J. Russell ◽  
A. Appleyard
Keyword(s):  
Organic Matter ◽  
Soil Fertility ◽  
Plant Nutrients ◽  
Fundamental Importance ◽  
Soil Conditions ◽  
Plant Residues ◽  
Beneficial Effects ◽  
Decomposition Of Organic Matter ◽  
Decomposition Of Plant Residues

The biochemical decomposition of plant residues and other organic matter in the soil is of fundamental importance for soil fertility. It causes the breaking down of coarse plant fragments which otherwise might open up the soil too much: it leads to the production of colloidal complexes known as humus which exert many beneficial effects both chemical and physical, and it brings about the formation of nitrates, the most important of the nitrogenous plant nutrients.

scholarly journals A New Spiral Potato Cleaner to Enhance the Removal of Impurities and Soil Clods in Potato Harvesting

2020 ◽  
Vol 12 (23) ◽  
pp. 9788
Author(s):  
Volodymyr Bulgakov ◽  
Simone Pascuzzi ◽  
Semjons Ivanovs ◽  
Zinoviy Ruzhylo ◽  
Ivan Fedosiy ◽  
...  
Keyword(s):  
Numerical Solution ◽  
Experimental Studies ◽  
Analytical Description ◽  
Potato Production ◽  
Angular Speed ◽  
Plant Residues ◽  
Agricultural Field ◽  
Production Chain ◽  
Removal Of Impurities ◽  
The Mathematical Model

Sustainability in the agricultural field suggests the conservation and maintenance of a natural environment of soil. Nevertheless, in the potato production chain, the mechanized harvest is carried out with the concurring removal of impurities and fertile soil. The authors have developed a new spiral potato cleaner which is able to capture and efficiently remove soil lumps of various sizes and shapes, as well as various plant residues. Theoretical and experimental studies have been performed on this soil clod cleaner to determine the structural and kinematic parameters that provide efficient capturing, motion and sifting down of the soil, through the gaps between the helices of its cleaning spirals. An analytical description of the motion of the clod of soil has been made and a system of differential equations has been compiled, whose numerical solution made it possible to determine the indicated reasonable operative parameters of the developed spiral potato cleaner. The results of the experimental research confirmed those ones obtained through the numerical solution of the mathematical model, i.e., rational angular speed ω of the rotation of the spirals from 20.0 to 30.0 rad s−1 and the radius R of spirals between 0.12 and 0.15 m.

scholarly journals Influence of different temperature regimes at torrefaction of chicken litter on yield and properties of products

2019 ◽  
Vol 114 ◽  
pp. 06007
Author(s):  
Olga Larina ◽  
Yana Pudova
Keyword(s):  
Chemical Composition ◽  
Thermogravimetric Analysis ◽  
Liquid Fraction ◽  
Experimental Studies ◽  
Calorific Value ◽  
Solid Residue ◽  
Optimum Temperature ◽  
Volume Yield ◽  
Temperature Regimes ◽  
Chicken Litter

The purpose of the research is study the influence of the torrefaction process on the fuel properties of the chicken litter. Experimental studies on lab-scale system at five temperature regimes of torrefaction (220, 240, 260, 280, and 300 °C) with a holding time determined using thermogravimetric analysis were conducted. The products of the torrefaction are solid residue, non-condensable gases, and tar. For the feedstock and torrefied material the elemental composition, the lower calorific value, hygroscopicity limit and bulk density are determined. For liquid fraction the analysis of the chemical composition is carried out. The properties of non-condensable gases as chemical composition and calorific value - are investigated. Mass yields of the solid residue and tar, and specific volume yield of the non-condensable gases are presented. The conclusion about the optimum temperature regime for torrefaction of chicken litter based on the results of experimental studies is made.

scholarly journals USING MICROORGANISMS FOR SOIL PURIFICATION FROM HIGH-PARAFFIN CRUDE OIL

REPORTS ◽  
2021 ◽  
Vol 335 (1) ◽  
pp. 104-110
Author(s):  
G.Zh. Kenzhetaev ◽  
A.N. Boranbaeva ◽  
A.K. Serikbayeva ◽  
S. Syrlybekқyzy ◽  
T.Sh. Issanov
Keyword(s):  
Crude Oil ◽  
Contaminated Soils ◽  
Experimental Studies ◽  
American Petroleum Institute ◽  
Biological Product ◽  
Rapid Decomposition ◽  
Secondary Use ◽  
Oil Storage ◽  
Experimental Laboratory ◽  
High Degree

This paper presents the research data aimed at resolving the problem of soil purification from high-paraffin crude oil using microorganisms.Samples of oilcontaminated soil were taken from the walls of the oil storage pit at the Uzen oilfield. According to the analysis of the oilcontaminated soil samples, the share of oil was 28 %, the share of mechanical impurities – 9.7 %, and the share of water – 60 %.It has been found that according to the API(American Petroleum Institute) indicators, that oil chemical composition may contribute to its rapid decomposition during bioremediation. Paraffin hydrocarbons are also easily decomposed by bacteria. The bacterial preparation «SHER» was used in laboratory experiments.The method of bacteria immobilization with the «SHER» biological product on the medium made from screenings of shell limestone wastes has been chosen.The conditions for conducting experimental laboratory studies on cleaning oil-contaminated soils by biological remediation are described.According to the results of the research, it was established that the immobilization of bacteria of the biological product "Sher" by a carrier in the form of sifting limestone-shell rock showed a high degree of purification of oil-contaminated soil (88.63%).To study the further activity of bacteria, experiments were conducted on the secondary use of thesolution of residual mother waterof the biological product "SHER", used in the process of cleaning oil-contaminated soil.The results of experimental studies using solution of residual mother water and immobilization by screening showed the degree of soil purification (45.7%). Thus, based on the results of studies of the drug "SHER", it can be concluded that this drug can effectively neutralize oil products in the soil.

scholarly journals Germplasm Screening of Green Manure Rapeseed through the Effects of Short-Term Decomposition on Soil Nutrients and Microorganisms

Agriculture ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1219
Author(s):  
Xiaodan Wang ◽  
Hua Ma ◽  
Chunyun Guan ◽  
Mei Guan
Keyword(s):  
Soil Nutrients ◽  
Green Manure ◽  
Soil Microorganisms ◽  
Soil Nutrient ◽  
Principal Component ◽  
Nutrient Content ◽  
Germplasm Screening ◽  
Significant Difference ◽  
Soil Nutrient Content ◽  
Phosphorus And Potassium

The rapidly emerging fertilizer rapeseed used as green manure has wide applications for use. However, there have been few studies on its decomposition and effects on soil nutrients and microorganisms after its decay. In this study, 12 rapeseed lines to be screened were decomposed through a randomized block field design with two green-manure-specific varieties as the controls. The contents of nitrogen, phosphorus, and potassium from the plants, soil nutrients, and microbial changes after degradation were measured. There were substantial differences in the rates of decomposition and cumulative release of nutrients among the different lines after 30 days of rolling. The contents of phosphorus and potassium in the soil were 1.23–2.03 and 3.93–6.32 times those before decomposition, respectively. In addition, there was a significant difference in the relative content of soil microorganisms at the phylum level after the decomposition of different species of rapeseeds. Most of the top 20 bacterial groups significantly correlated with the characteristics of plant decomposition and soil nutrient content, including Proteobacteria, Actinomycetes, Armatimonadetes, Rokubacteria, and Planctomycetes. A principal component analysis showed that the soil microorganisms and nutrients are the leading factors that enable the evaluation of the decomposing characteristics of green manure rapeseed. Numbers 5 (purple leaf mustard) and 8 (Xiafang self-seeding) were more effective than two controls, which can be used as excellent types of germplasm to promote the breeding of green manure rapeseed.

Limnocharis flava (yellow bur-head).

2021 ◽  
Author(s):  
Azmi Man
Keyword(s):  
South America ◽  
Green Manure ◽  
Plant Residues ◽  
South East Asia ◽  
Drainage Ditches ◽  
Sulfonyl Urea ◽  
Irrigation Channels ◽  
Young Leaves ◽  
The Usa ◽  
Whole Plants

Abstract L. flava, commonly known as yellow bur head, is a perennial broad-leaved weed which behaves as an annual in certain habitats. It spreads throughout South-East Asia especially in rice crops, and also in South America and the USA. It prefers wet conditions such as lowland rice fields, shallow canals and ditches and reproduces both by seed and vegetatively. Heavy infestations of L. flava indicate a fertile soil. The effectiveness of drainage ditches and irrigation channels can be reduced through siltation caused by blockages of L. flava leaves and roots. Young leaves, petioles and flower stalks can be eaten as vegetables. Whole plants are used as fodder for pigs, cattle or fish and plant residues can be also be used for feed and as green manure. L. flava can be controlled by chemical such as 2,4-D herbicides and sulfonyl urea products such as bensulfuron and bensulfuron/metsulfuron. Bentazon/MCPA can be used to control multiple resistant biotype of L. flava.

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