№ 121(7), September, 2016
Public date: 30.09.2016
Archive of journal: Articles count 138, 339 kb
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06.00.00 Agricultural sciences
SCIENTIFIC AND METHODOLOGICAL ASPECTS OF TOBACCO SEEDS GROWING
06.00.00 Agricultural sciences
DescriptionNicotiana tabacum and rustica are facultative self-pollinated plants, therefore, because of pollination peculiarities, specific methods are applicable to growing seeds of this plants. Researches on mass, individual and family, recurrent methods of seeds selection for productivity and sowing properties are carried in the institute for revealing most efficient methods of getting seeds. Seeds growing system for Nicotiana tabacum and rustica is a part of general seeds growing system for all agricultural plants and consists of breeding, testing new sorts, mass reproduction of seeds with retained biological and productivity properties, seeds harvesting and controlling their sort and sowing properties. Primary growing of nicotiana tabacum and rustica seeds is carried by individual and family or recurrent selection and further testing of chosen plants, distinctive for this sort, on economically valuable and biological properties. Peculiarities of each zoned sort are kept by retaining its primary genome with constant selection of highly productive genotypes, specific for this sort. Well-organized seed growing system leads to sort potential revealing. Biotype composition of sort is obviously changing in a few years, so primary seeds growing system should be constantly improved
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06.00.00 Agricultural sciences
DescriptionPeach fruit is much demanded worldwide. The success of its cultivation depends on the optimal plant placement of all the huge biodiversity considering the cultivar demands. The northern boundary of the peach cultivation passes through the Kiev-Kharkov-Rostov-on-Don, Maikop, Nalchik, Grozny, Astrakhan (Witkowski, 2003). However, because of extreme temperatures there are almost no suitable areas for Peach crop cultivation in these borderlands, in the Krasnodar and the Stavropol regions. From the other hand, extreme temperatures for peach cultivation in the humid Russian subtropics were not observed. Spring frosts till -5 ° C were observed in 2004, 2014. However, the cultivar productivity in the region influenced by the duration of low temperatures (7,2 ° C and below) that were observed from December to March. The amount of low temperatures for each cultivar was established using the highest coefficient of yield determination, depending on the temperature, amount of precipitation and the "cooling unit." The yield of peach cultivars is closely linked with the abovementioned agro-climatic conditions during the flowering period. Paired correlation coefficients of yield with precipitation and with temperatures (for most cultivars) were negative, and since they are unregulated value, the flowering phase is crucial for peach culture in the Russian subtropics
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EFFICIENCY OF TETRA+ FEED ADDITIVE APPLICATION IN CHRONIC MYCOTOXICOSES OF PIGS
06.00.00 Agricultural sciences
DescriptionThe article describes the efficiency of a feed additive called "Tetra+" during chronic mycotoxicoses of pigs. The purpose of carrying out series of experiments on sows was to determine the therapeutic and prophylactic effectiveness of innovative feed additive "Tetra+" during combined chronic mycotoxicosis in pigs and to study the influence of feed additive on the growth, weight, preservation and overall resistance of sows. The results of the experiments revealed that a feed additive "Tetra+" has had a positive impact on large-fruited of pigs; it can also be concluded that the feed additive "Tetra+" has a positive effect on the metabolism of proteins, carbohydrates and has antitoxic properties
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METHODS OF DESTROYING COMMON RAGWEED IN SUNFLOWER CROPS IN THE KRASNODAR REGION
06.00.00 Agricultural sciences
DescriptionRagweed plant became quarantine malware on the territory of Southern Russia. In the Krasnodar region it has been extended to the territory of more than 4.62 million hectares. In the areas of its growth, it causes great damage to agriculture. By developing a strong root system and aboveground, it inhibits the row crops, especially sunflower. Another problem with this weed is producing large amounts of pollen that causes allergic reactions in the majority of residents of the province. This article discusses the importance of using modern methods of ragweed oppression, including chemical and biological methods in sunflower crops
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06.00.00 Agricultural sciences
DescriptionIn the conditions of the Krasnodar region, we consider the quantitative and qualitative characteristics of seeds obtained when using different schemes of organization of hybrid seed production of squash in the Krasnodar region. As a result of studying various techniques in the production of hybrid seed of summer squash, we have established the effectiveness of using open pollination, and assessed the approbation of the signs of F1 hybrid plants obtained under different schemes of organization of hybrid seed production of squash
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06.00.00 Agricultural sciences
DescriptionThe article presents results of the evaluation of the physiological aspects of growth and fruiting of peach on clonal rootstock VVA-1, depending on the layout of the trees. It was found that when forming a spindleshaped crown, the most productive planting scheme is 5,0х1,5 m, at which the most optimized physiological processes were proved
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USAGE OF SEEDLINGS FOR RECEIVING ULTRAEARLY HARVESTS OF POTATO
06.00.00 Agricultural sciences
DescriptionUsing of seedling method for growing early potatoes accelerates the starting processes of growth and development of plants, and the application of temporary covers of the nonwoven covering materials protects the landing from sudden temperature changes and relapsing frost. To receive seedlings of early potatoes we used standard seed tubers of 60-80 g weigh of the following varieties: Agata, Red Scarlett, Kislovodskiy, Vershininskiy and Sheri. By the time of planting in the ground, depending on the varieties, the height of seedling was from 13 to 26 cm, the number of leaves - 7-10 pieces. Conducting of trial unearthing of potato showed that on 45 days after transplanting into the ground (the second decade of May), it is possible to receive up to 10, 5-11, 4 t/ha (Agata and Red Scarlett varieties). On 55 days (the third decade of May), the yield reached 26, 4 t/ha of standard tubers, and in the first decade of June the yield was from 26, 4 to 50, 6 t/ha. The maximum yield of standard tubers of 50, 6 t/ha was obtained by lifting on 65 days with the Red Scarlett variety. In the terms of the Astrakhan region the growing of early potato by seedling method with using of temporary cover allows to receive the ultra-early harvest of marketable tubers in the II-III decade of May
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06.00.00 Agricultural sciences
DescriptionAn experiment was conducted to examine the effect of fatty acid concentrate (FAC), as a new source of energy and carnitine on performance, physiological condition and meat quality of broiler chickens. In experiment there were four groups of 80 chickens of cross Hubbard each (males: females=40:40) in age period 0-41 days. 1 group (control) received in during the periods 0-14, 15-28 and 29-41days, sunflower oil (SO) respectively 5.34%, 5.50%, and 6.10%, group 2 received the same amounts of FAC instead SO, 3 group - mixture SO:FAC (50:50), 4 group -FAC + 0,25% carnitine. Final body weight: 1 group = 2574±29 g, 2 group FAC= 2553±27 g 3 group SO + FAC = 2531±34 g., 4 group FAC+0,25 carnitine = 2520±34 g. Feed conversion, digestibility of nutrients, blood hematology and biochemistry, the condition of organs, meat quality and cutting of carcass of chickens on FAC had no any differences from the same signs in chicks on SO. Carnitine had a positive effect on chicken growth only in the period 0-14 and less 15-28 days; in the period 29-41 days daily gain was below, than that in 1-3 groups. Canitine reduced the content of liver fat. Outcome: FAC is a satisfactory source of energy, comparable with vegetable oils. The price of FAC is 30% lower in comparison with sunflower oil and soybean oils, therefore its use in broiler poultry farming instead of vegetable oils will be of great economic importance
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06.00.00 Agricultural sciences
DescriptionThe purpose of the research is to compare the effect of a new symbiotic feed supplement created based on propionic and lactic acid bacteria with a widely used domestic and foreign enzyme-probiotic preparations in chickens 0-28 days of age of the Lohmann Brown egg cross. In the experiment, there were six groups of chickens: group 1 received basal diet (BD); group 2 – BD + symbiotic preparation; group 3 – BD + Bacell; group 4 – BD + Agrocell; group 5 – BD + Agroksil; group 6 – BD + Ollzaym Vegpro. Average daily gain, food conversion rate per 1g of weight gain, digestibility of organic matter, crude protein, crude fiber, crude fat, made up respectively: group 1 – 8.17, 1.91, 71.4, 58.3, 68.0, 81.1; group 2 ˗ 8.36, 1.90, 72.4, 60.2, 69.7, 88.1; group 3 – 8.13, 1.91, 73.1, 60.2, 69.7, 88.1; group 4 – 8.33, 1.86, 74.2, 62.5, 72.2, 87.6; group 5 – 8.50, 1.83, 77.3, 64.1, 73.4, 95.4; group 6 – 7.91, 1.92, 73.2, 67.5, 70.7, 94.3. The growth rate of chickens fed with symbiotic feed supplement was 2.3% higher than in the control and they showed the highest fiber digestibility. The chickens on diet with Agroksil enzyme efficiently raised growth rate (+4%) and reduced feed costs (-4.2%). Agrocell increased weight gain by 2% and reduce feed costs by 2.6%. The growth rate of chickens fed Ollazaym Vegpro was the lowest (96.8% of control), despite the fact that it increased significantly the digestibility of crude protein, but slightly improved the digestibility of other nutrients. Outcome: symbiotic feed supplement may be of interest as a means of increasing the productivity of chickens
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06.00.00 Agricultural sciences
DescriptionThe article presents the data on the formation of the embryonic fruitfulness of central ovaries of wintering buds of the group of technical grape varieties with white berries - White Muscat; Pinot White, Chardonnay, Citron Magaracha, Pervenets Magaracha; Riesling, Viorica, Riton, Crystal in the conditions of Anapa-Taman zone. There were revealed the rates of embryonic fruitfulness of central ovaries of buds of studied cultivars and fruiting indices of vegetative shoots developed from them. In all studied grape varieties there was revealed a high percentage of fruitful buds from 84,1 in the variety of Riton at 97.2 at Viorica; and the percentage of fertile vegetative shoots from 81,8 at the variety Citron Magaracha to 97.2 in the variety White Muscat. At the leveled load of bushes, vegetative shoots and the same scheme of planting of bushes (3 x 2 m), the highest yield in terms per hectare showed the varieties Pervenets Magaracha, Viorica, Riton, Crystal, Riesling and Citron Magarach. When assessing the economic efficiency the highest net income and level of profitability were identified in the varieties of Citron Magaracha, Pervenets Magaracha, Viorica and Riton. In order to determine which buds will give us shoots with large, well-developed (well-differentiated) buds, and which will not give (weakly differentiated), it is necessary "to look inside a bud". But even already formed germs of inflorescences in the bud are able in a few days in spring or dedifferentiate or degrade depending on the influence of external conditions. Scientists have learned to use this ability to increase the maximum possible yield in years of severe damage of grape by frosts. Firstly, in frosty winters the central buds wither out. The replacing buds usually have poor fruiting and bad productivity during years. In such cases, it is more profitable to conduct a small cutting of angle buds arranged in a circle at the base of a shoot. At the beginning of the second vegetation phase, these buds will obtain the great bulk plastic substances, which will cause the dedifferentiation of rudiments of inflorescences in them. Thus, it is possible not only to restore rapidly the normal shape of a bush, but to obtain a good harvest this year