№ 155(1), January, 2020
Public date: 31.01.2020
Archive of journal: Articles count 16, 52 kb
-
05.13.10 Management in social and economic systems
DescriptionThis article discusses the general principles of developing software applications for generating and verifying practical tasks in mathematical disciplines in the Visual Basic for Application development environment. The structure of computer programs is described, the main components of the implemented macros are investigated, the algorithms of the basic procedures are given. A special place is given to the problems of identifying students and protecting the generated data. We have also given recommendations on the use of developed programs in the educational process
-
MAINTENANCE AND USE OF BREEDING COWS OF THE HOLSTEIN BREED IN THE CONDITIONS OF INTENSIVE TECHNOLOGY
DescriptionConsidering the fact that in Russia the development of dairy cattle breeding is based on increasing milk production in terms of providing this product, the further increase in milk yield and quality of cow's milk remains important. Some farms in Russia, including the Krasnodar region, have reached high milk production rates in whole herds of up to 12-13 thousand kg of milk per cow. Today it is important to “propagate” such farms. To achieve this goal, it is necessary to study their livestock breeders experience, approaches to the selection of cattle (calves, heifers, cows), to form herds of animals that can get high milk yield under the conditions created for them. The farm in which we conducted our scientific research is distinguished by the fact that much attention is paid to maintaining a high level of breeding and breeding, as well as to creating optimal factors for keeping, feeding and caring for animals. Agroholding Step includes 5 farms in divisions: one in the Kuban Step, two in public company of shareholders “Rodina” and two in shareholder company “Novoplastunovskaya” Three farms are located in the village of Chelbasskaya, where the cowsheds were reconstructed and equipped with new equipment. In the village of Novoplastunovskaya, new buildings were built in the territory of the old farm, and the 4th farm was built in 2018 in the new territory. All farms contain highly productive breeding cows of the Holstein breed. The Russian information programs “Selex-Dairy Cattle” and Israeli program “AfiFarm” were introduced. We have studied zoohygienic conditions in various buildings of dairy farms in the spring, where animals are constantly kept. The results obtained indicate that the cows are kept in comfortable conditions, allowing them to eat a balanced diet in accordance with their needs and to avoid many stresses what is important for the secretion of milk. Indicators of genetic potential for milk production of cows and the effectiveness of its manifestation are also determined
-
06.01.05 Selection and seed production of agricultural plants (agricultural sciences)
DescriptionThe purpose of the work was to test the winter wheat varieties artificially infected with North-Caucasus brown rust to identify its harmfulness. There was carried out a two-stage testing on two sets (8 and 10) of varieties that differed in their resistance to the pathogen. As a result, there has been identified high brown rust harmfulness in susceptible varieties, which led to a yield decrease from 16.3 to 32.2%. Among the maximum infected varieties, there has been identified the most tolerant variety ‘Tarasovskaya 29’ which, when damaged to 100%, had a minimum yield decrease (less than 10.6%). The poorly susceptible to brown rust varieties reduced their yields from 11.2% to 20.7%. Among them, the variety ‘Spartak’ showed lower rates of a yield decline. Among the five varieties that showed an average brown rust affection, there have been noted various indicators of a yield decrease. The variety ‘Donskaya Yubileynaya’ showed a minimum decrease of a yield and its structural elements under the conditions of artificial infection with brown rust; and together with the variety ‘Tarasovskaya 29’ can be classed to the varieties tolerant to brown rust. When predicting brown rust epiphytoty the susceptible and medium-resistant wheat varieties require obligatory protection with fungicides
-
Description
The article discusses the relevance of the use of protected amino acids (lysine and methionine) in animal husbandry of the Krasnodar region, using the example of the farm "Krasnodar". The highest milk yield was obtained from cows with the combined addition of lysine and methionine in their diet. In relation to control (CR), the average daily milk yield in the group with combined additives (CR+L+M) was 38.4 kg/day. In addition, there was a positive effect of lysine and the combined additive (CR+L+M) on protein and fat in milk. Protected methionine (CRM) had no effect on the yield of fat and protein in milk. It was noted that additives of protected amino acids in groups with lysine and combined amino acids reduced the cost of dry matter (DM) and metabolizable energy (ME) per kg of milk. The results of our studies have shown that the productive milk response and its components are affected by the amount of the first limiting amino acid in the diet. Also, the supply of protected lysine changed the plasma concentration of animals and improved the availability of amino acids for milk protein synthesis
-
06.01.01 General agriculture, crop production (agricultural sciences)
DescriptionThe studies were conducted on the biological economic efficiency of biological preparations against pests in the conditions of the training and experimental farm of the Federal State Budget Educational Institution of Higher Education of the Stavropol State Agrarian University in winter wheat crops of the Yuka variety. The effect of triple use of biosecticides Bioslip BV (viable spores of Beauveria bassiana OPB-09 strain) and Bioslip BT (viable spores and thermostable crystalline endotoxin of B. thuringiensis strains) was studied. A tank mixture of Alt-Alf chemical insecticides, CE (alpha-cypermethrin 100 ml / l) and Actara, VDG (thiamethoxam 250 g / kg) was used as a reference. Bioinsecticide Bioslip BV most effectively suppresses cereal aphids: the average biological effectiveness was 78.3%, in relation to harmful turtle and wheat thrips, the effectiveness of the drug was 60.3-68.7%. Bioinsecticide Bioslip BT is effective against the red-breasted drunkard; the average biological effectiveness was 84.2%, in relation to other species - 27.2-44.2%. The efficiency of using a tank mixture of bioinsecticides with half consumption rates was in the range of 23.3-40.7%. The harmfulness of phytophages in winter wheat crops is high, the control yield is lower by 0.556 t / ha compared with chemical treatment. The smallest difference with economic etholone in the variant with three times use of Bioslip BV is 0.09 t / ha
-
06.01.01 General agriculture, crop production (agricultural sciences)
DescriptionIn the experiment, we have studied the effect of the use of an intelligent spreader on increasing the efficiency of nitrogen fertilizers used to feed winter wheat in ordinary chernozem. The studies were carried out in the production conditions of land use by AO SHP Kolos in the Kochubeyevsky district. In this article, we have examined the effect of a sprayer (Amazone UG 3000 Nova) and an intelligent mineral fertilizer spreader (Amazon ZA - TS - 4200) using touch sensors to determine the NDVI development index on the efficiency of nitrogen fertilizing winter wheat. Based on the experiments, it was found that, on average, over the two years of the study, the largest increase in the yield of winter wheat grains was noted in the variant with the introduction of ammonia nitrate in the first and second fertilizers using the intelligent fertilizer spreader Amazon ZA - TS - 4200 according to the NDVI - 6.53 t / ha. The highest structural indices of winter wheat grain yield were also noted in the variant with the introduction of ammonium nitrate in the first and second fertilizers using the Amazon ZA - TS - 4200 intelligent fertilizer spreader according to the NDVI index. So, the height of plants increased by 16.3 cm, the number of productive stems per 1 m2 by 37 pcs. The number of grains in the ear - by 5 pcs., The weight of 1000 grains - 0.8 g. According to the results of the experiments, it was established that in the conditions of land use by JSC "Agricultural Enterprise" Kolos "of the Kochubeyevsky District of the Stavropol region when planning the harvest of winter wheat - 6.5 tons / ha, it is advisable to use in the first and second top dressing of ammonium nitrate with a dose of 150 kg / ha, using the Amazon ZA - TS - 4200 intelligent fertilizer spreader according to the NDVI index