06.00.00 Agricultural sciences
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06.00.00 Agricultural sciences
DescriptionThe purpose of the study was to examine a century of experience of growing of forest cultures of the Siberian stone pine in forest conditions in the region of the Middle Volga. To achieve these objectives, we have investigated old growth culture of Siberian stone pine in the conditions of fresh oak forests in the territory of Rootka forestry of the Mari El Republic. Culture of Siberian stone pine was planted after continuous tillage. The distance between rows was 2,5 m, step landing – 1,0 m. The site was divided into five options, depending on variations in the width of planting strip (I-48 m, II-44 m, in III-40 m, IV - 36 m, V - 32 m). The studies have shown that the Siberian stone pine trees, regardless of the variant, are characterized by good clean ability from twigs, which increases with decreasing of the width of the curtain. It can be noted that in the 100-year-old age, the average height of trees reaches of 28,7 m, an average diameter of 49,8 cm. Stock of forest reaches 795,3 m3 /ha. Best annual increase is observed in growing cultures of cedar in the wings with a width of 40 m and is 7,95-of 7,93 m3 /ha. Based оn the research, we have concluded that Siberian stone pine should be recommended for introduction into the zone of coniferous-broadleaved forests of the Middle Volga region. When creating crops, it is necessary to use larger seedlings and plant density is not more than 1,0 thousand pieces/ha, and the width of the planting strip shall be not less than 40,0 m.
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SUNFLOWER LOW TEMTERATURE GROWTH RATE EVALUATION CONCERNING BREEDING FOR COLD RESISTANCE
06.00.00 Agricultural sciences
DescriptionOne of the prospect directions in new sunflower hybrid development is cold resistance breeding in the emergency stage. Sunflower hybrids with uniform emergency and high rate growth under the low temperature conditions could allow to introduce sunflower in the new regions of our country and so to increase sunflower acreage. The aim of our work was to screen all sunflower available samples for growth rate under the low temperature and to select the best lines and initial material for future breeding. 140 sunflower lines of VNIIMK breeding and hybrid populations on their base were used as a material. Seeds of every sample were incubated during the 10 days in the thermostat under 100 С. Seed germination was evaluated for the each sample along with the seedling size. As a result the most prospective samples were selected for the future breeding work. On the second stage of the experiment one selected population was evaluated on the Breeding station of Vavilov’s AllRussian Research Institute of Plant Industry in the city of Pushkin (Leningrad region). Seeds from the best plants were obtained in this place and will be used for the new lines development. So the effectiveness of selection of sunflower samples for growth rate under the low temperature was verified and this method could be used to introduce sunflower in the new regions of our country with more severe climatic conditions
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THE GROWTH AND PRODUCTION ABILITY OF SHOOTS AT DIFFERENT VARIANTS OF CUTTING FRUITBEARING VINES
06.00.00 Agricultural sciences
DescriptionThe article presents the results of studying the impact of different options for cutting fruit vines on the growth and productivity of shoots of the grapes. The obtained experimental data indicate the excessive overload of vines with eyes and shoots when performing contour trimming bushes without normalizing the choice of shoots, in comparison with other variants of experience. A significant increase of eyes on the vines when performing contour cutting was because during this method of cutting, the cutoff is at a certain level all the shoots are horizontal on the arm vines. A big load of vines shoots when performing contour cutting has reduced the length of shoots at 48 – 51%, and leaf area developed on the shoots of 53 – 54%. While the lowest productivity was different shoots developed on the vines in 3 variant, because here the contour cutting vines was not accompanied by a subsequent breaking of superfluous shoots, which have overloaded the bushes shoots. At the same time, contour cutting vines with subsequent breaking of the normalizing excess shoots were allowed to grow for fruiting the bushes a sufficient amount of normally developed shoots with high productivity and good quality bunches
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06.00.00 Agricultural sciences
DescriptionFeeding lactating dairy cows of the Simmental breed using the collection of herbs with Тhyмus bituminosus Klok, Achillea millefolium L., Polygonum aviculare L., Galium verum L, Chamerion angustifolium L., Sanguisórba officinális, Stellaria media L. and Amaranthus retraflexus L. contributed to a better digestibility and nutrient utilization of diets. A high level of digestibility by cows experimental compared to the control group is set with respect to the dry and organic matter of 2.0% and a crude protein 1.4 %. When using the collection of herbs, there was an increase in the antioxidant status of erythrocyte cells in blood of dairy cows as expressed in the increasing content of low molecular weight antioxidants in blood cells by 1.4 times in reducing the intensity of lipid peroxidation of erythrocyte membranes in 1,2 times, in comparison with the control values. The use of the collection of herbal increases milk yield of cows of the experimental group by 7.4 %, increases by the 16.2 % yield of milk fat and the protein content of 10.7 % in milk of dairy cows compared to the control group
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CHEMICAL COMPOSITION COMPARISON OF DRIED TOBACCOS OBTAINED FROM DIFFERENT HYBRIDS, SORTS AND LINES
06.00.00 Agricultural sciences
DescriptionTasting and smoking properties of tobacco products depend on chemical composition of dried tobacco. The most important are nicotine, carbohydrates, and proteins. Their content is controlled when new sorts are bred. In the article data on chemical composition and their analysis for some hybrids, new and zoned sorts are presented. Most of studied samples had medium nicotine content in dried tobacco. Hybrid of Jubileiniy noviy 142 and Ostrolist 46, sorts: Trapezond 159, 359, 115 and Ostrolist 46 were characterized as low nicotine tobaccos. Jubileiniy (standard) and Oktiabrskii were characterized as high nicotine tobaccos. This indicator depends on rain quantity during vegetation period. During drought seasons this indicator is higher. Total soluble carbohydrates content affects smoke taste. The more water soluble carbohydrates content the better smoking properties tobacco has. Unlike nicotine, carbohydrates content when rainy season increases. Best results were for Krupnolistniy 9M and Oktiabrskii. Proteins have negative effect on smoke taste as it becomes bitter and with smell of burned feathers. Most of studied hybrids have quite high protein content. For cured tobacco quality assessment, not total contents of proteins and carbohydrates are important but their ratio (carbohydrates/proteins) called Shmuk ratio. Best results were for Krupnolistniy 9M and Oktiabrskii
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THE EXPERIENCE OF CREATING A POPULATION OF MEAT-WOOL SHEEP
06.00.00 Agricultural sciences
DescriptionThe study of the productive qualities of crossbred offspring from different breeding combinations and identifying the most effective ones providing the maximum increase in the production of high quality lamb while reducing its cost is an important problem and is essential for further development of methods of creating a new type of precocious meat and wool sheep. In the Rostov region in the result of the establishment of populations of meat-wool sheep there are several groups of animals with different characteristics and hereditary inclinations. As the base of the work there is a method of mating and breeding of sheep of the desired type. The article presents the results of one of the fragments of a large complex work in which the possibility of using three-pedigree hybrids, created with the involvement of potential salskaya, edilbaevskaya and intense meat-wool breed, which is severokavkazskaya, to improve productive quality in the breeding of sheep. We have evaluated productivity and biological features of hybrids and proved the economic efficiency of their use in the production of mutton. We have given the results of the control slaughter and assessment of qualitative indicators of the meat of young sheep. The set of indicators characterizing meat productivity and meat quality revealed that the superiority of the studied indicators remained for two - and three-bred cross cattle. Hybrids have a higher rate of growth and quality parameters of meat productivity. These options are simple and complex industrial crossing are promising and can be implemented and used on the farms of the zone of breeding Merino sheep. Thus, the use of crossbreeding gives an opportunity to convert a flock of sheep in the desired direction quickly. At the same time, three-pedigree hybrids better combine the valuable qualities of the used species
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06.00.00 Agricultural sciences
DescriptionThe article is devoted to the various elements of the cultivation technology of winter wheat called Antonina with the application of different soil fertility backgrounds, fertilizer norms, and plant protection systems against weeds, pests and diseases. Investigations are carried out in a multivariate stationary experiment: factor ‘A’- soil fertility; factor ‘B’ - fertilizer system; factor ‘C’ - the system of plants protection; factor ‘D’ - the main methods of soil tillage. Four models of soil fertility levels were studied in the experiment: А0 - initial (natural background); А1 - medium (200 kg / ha Р2О5 and 200 t / ha of solid manure); А2 - high (double dose); at А3 - high (tripled) on three backgrounds of basic soil tillage: nonmoldboard, recommended, moldboard with deep bursting and without the application of tillage (direct seeding and the natural rate of soil fertility). The soil is heavy leached black humus with humus content in the arable layer of 2.5% - 2.9%. Based on examined researches it was found that for the sustainable yield of winter wheat the dose of mineral fertilizers should be increased, by that, the high quality of the grain is provided
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06.00.00 Agricultural sciences
DescriptionIn the soils of rice fields, eluvial gley processes develop, which are manifested in redistribution of silty particles along the profile, water-soluble humus, mobile compounds of iron and phosphorus. Most intensively, these processes are developed in meadowbog soils, confined to closed depressions of the plains plain. Meadow-black soils lying on elevated relief elements have more favorable physical, physicochemical and oxidation-reduction properties for cultivating rice and accompanying crops in crop rotation. The highest yield of rice is formed on high checks and higher at 12,4 c/ha than on low ones
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06.00.00 Agricultural sciences
DescriptionThe article presents the results of a study to determine changes in indicators of fertility in typical chernozem of the Belgorod region and the productivity of corn using different agricultural technologies, including with elements of biologization
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06.00.00 Agricultural sciences
DescriptionIn breeding programs, evaluation of initial material is made on all the stages of developing the variety. Great difficulties for the breeding process are made by absence of modern mechanisms for storing, retrieving, manipulating the relevant data, and using the information previously obtained for use in solving the set breeding task. In order to organize the management of breeding process for development of high-quality rice varieties, based on the urgency of problem of intellectual analysis of data, the Database "Rice Quality" was designed as a set of structured data - the rice quality characteristics identified in the stages of the process of developing variety belonging to the "Rice". In the domain model, the infologic model, a set of parameters for evaluating rice quality in terms of out-of-program components is defined. The program is written in the Microsoft Access database environment using built-in query building tools, forms, reports. The structure of the developed tables includes static and refreshed directories in which the necessary information is stored, the tables are combined into one-to-many relationships, while ensuring data integrity, cascading updates and deletion of fields