03.00.00 Biological sciences
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Description
Questions of microbial plant protection become more relevant. The use of microorganisms can solve the following problems: biologization of agriculture and sanitation of soil. Application of various physical factors affecting the microorganisms reduces their number. This influences the efficiency of their use. This article gives examples of the application of pressure in the biotechnological process of microbial preparations and their use in the process of spraying. The effect of pressure on nonspore bacteria - Azotobacter chroococcum, spore-forming bacteria - Bacillus megatherium and fungi - Trichoderma viride has been presented in this article. These microorganisms are used in the tank medium for protecting plants against diseases and pests developed by Ltd. "Kuban agrotehnoloogy" of Kuban State Agrarian University. Efficiency is the simultaneous application of tank medium of microorganisms with herbicide. It was found that the application of the tank medium of microorganisms for spraying is necessary to limit the pressure of 4.5 atm. Тhe use of higher spraying modes effects on reducing the number of viable bacteria. This fact has not been checked against fungi
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Description
The researches have been conducted for the optimization of culture medium for unique genotipes of Populus tremula L. in vitro. It was found that for induction of proliferation of the arms of Populus tremula in vitro one should use MS culture medium with 0,1 ml / l IBA and 0,1 or 0,5 ml / l BAP. For stimulation of rhizogenesis MS culture medium with 0,3 ml / l IBA should be used
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Description
This article is devoted to treatment effects of cuttings of a grape variety called Moldova with 0.01% solution of heteroauxin on their regenerative capacity, depending on the light conditions. We have established that the germination of cuttings in the dark, as well as the treatment of heteroauxin significantly stimulate their regenerative abilities. The length of the shoots, regardless of the use of heteroauxin, depends on the mode of the light produced during the germination of cuttings. In both studies, the length of the shoots on the end of experiment cuttings germinated in the dark, was 1,71-2,66 times more than when germinated in the light. Cuttings rooting ability also largely depends on the light produced in their germination. In both studies, the rooting of cuttings started earlier and passed more rapidly during their germination in the dark. Processing cuttings with heteroauxin, followed by germination in the dark, speeded up the formation of roots even more, compared with the case where the cuttings treated with heteroauxin germinated in the light. In the best case rooting increased by 42,5-47,5%, the number of roots on basal ends of cuttings in 18,3- 18,5 times, the numbers of cuttings with 3 or more roots to 72,5-80,0%
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EFFECTS OF INCREASED WATER TEMPERATURES ON REPRODUCTIVE CHARACTERISTICS OF RAINBOW TROUT FEMALES
DescriptionThe effects of increased water temperatures on the reproductive characteristics of rainbow trout females were studied. It was found, that the increased water temperatures produced negative effects on the gonad maturation and survival of the embryos when acted at the late stages (IV and V) of female gametogenesis, but not at the earlier (III) stage
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EFFECT OF DEFORESTATION ON THE BIOLOGICAL PROPERTIES OF MOUNTAIN SOIL OF WESTERN CAUCASUS
DescriptionEFFECT OF DEFORESTATION ON THE BIOLOGICAL PROPERTIES OF MOUNTAIN SOIL OF WESTERN CAUCASUS
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Description
Daily watering (for 7 days) with probiotic "Provagen" at a dose of 14 g/head and complex probiotic (14 g/head) with chitosan (0.8 g/head) has optimized homeostasis, as evidenced by a strong tendency to reduce to the normative values of the relative content of neutrophils in the blood of calves
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Description
Large agricultural load on the steppe landscapes leads to the transformation of ecosystems and effect on all their components. Transformation of lands into laylands leads to a gradual restoration of anthropogenically disturbed steppe ecosystems. Studies that focus on the research of comprehensive processes in the territory of laylands are extremely relevant today. Herpetobiont fauna is one of the important characteristics of ecology and biology of soils. Herpetobiont Coleoptera can serve as indicators in the study of processes occurring in postagrogenic soils.The article presents the results of the study of changes in mesofauna, composition and structure of complexes of the gerpetobiont Coleoptera of ordinary black soils in natural succession series of different-age laylands. We also evaluated the degree of faunistic similarity of plots of laylands and allocated dominant species. Carabidae and Tenebrionidae are the basis of complex Coleoptera in the investigated laylands. The article shows that such indicators as the number of individuals, species, families of beetles and their dynamic density are depended on the age of the layland. In addition, the indices of biodiversity (Margalef and Shannon) and dominance (Simpson) are also connected with the age of plots of laylands
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INFLUENCE OF WATER EXTRACTS FROM VEGETABLE RAW MATERIAL ON OXIDATION PROPERTIES OF MILK PRODUCE
DescriptionThe great importance acquires the study of antioxidizing properties of foods nowadays. Results of researches of oxidizing properties of milk and cultured milk foods without and with addition of water extracts from vegetable raw material are presented in this article.
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Description
The results of a long-term research of the influence of various biologically active agents (a humic preparation Lignogumat and microbiological Baikal EM fertilizer) on a structural state and the enzymatic activity of ordinary carbonated black soil are presented. It has been established that biologically active substances contribute to increased enzymatic activity, humus and improve the soil structure
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BIOHUMATE EFFECTS ON SOIL BIOTA
DescriptionThe article represents the results of the experiment on biohumate «Vermistar» (which was obtained by vermiculturing) and its effects on mycological soil composition. Humic preparations are interesting in the way of detoxication of soil. When humic compounds are active, herbicides and pesticide decompose faster and concentrations of heavy metals are lowered. Adding humic fertilizers affect the physical properties of water-Soil: increases capillary and light soil field capacity (an average of 20-30%) and heavy water permeability, improves the structure and its water stability, reduced soil density. It was noted, that low doses of humic fertilizer contributes to water-stable aggregates, and high - change the ratio of the structural units in favor of agronomically valuable fractions. This, in turn, is accompanied by changes in the humus state, and biological characteristics of the soil. Moreover, increased microbial activity was observed in the first year of application of fertilizers and as an aftereffect. The maximum total number of microorganisms established in the initial phases of plant development. The increase in the number of microorganisms is enhanced and the enzymatic activity of the soil which in turn increases the mobility of soil nutrients