Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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THE EFFECT OF APPLYING THE INTELLIGENT SPREADER ON IMPROVING THE EFFICIENCY OF NITROGEN FERTILIZERS USED IN FEEDING WINTER WHEAT IN THE CONDITIONS OF REGULAR BLACK SOIL

abstract 1552001018 issue 155 pp. 243 – 253 31.01.2020 ru 0
In 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
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ANALYSIS OF SEED PRODUCTIVITY OF ALLIUM GUNIBICUM IN THE CONDITIONS OF INTRODUCTION

abstract 1511907008 issue 151 pp. 73 – 84 30.09.2019 ru 3
As the result of introduction research of Dagestan endemic Allium gunibicum under mountain conditions seed productivity variability data were obtained. An analysis of the data revealed significant difference in seed productivity performance of samples (inflorescence mass, seed mass, mass of 100 seeds, fruit number, ovules number, number of seeds, percentage of fruit bloom, seeds formation coefficient) among themselves both within one-year research and annually. The analysis showed that under the introduction with the same conditions the mean values of seed productivity characteristics decrease together with increasing of the sea level of collecting locations; at the same time, a mass of 100 seeds increases. The most variable factors were found out. They are seed mass in inflorescence, seed number in inflorescence, seeds formation coefficient. And the steadiest factors are a percentage of fruit bloom and mass of 100 seeds. As the result of the one-way analysis of variance a significant influence of the altitude above the sea level and slope disposition were discovered
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REGIONAL DEVELOPMENT OF SUGAR BEET BREEDING

abstract 1521908010 issue 152 pp. 77 – 84 31.10.2019 ru 3
This article discusses the stages of sugar beet-root breeding work, evaluation of the results of competitive tests, genetic potential productivity of hybrids, identifying productive forms of sugar beets, research techniques and production testing sugar beet hybrids, the main achievements of Pervomaiskaya FGBNU breeding and experimental station of sugar beets
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THEORETICAL PROVING THE PARAMETERS OF A UNIT FOR SEEDLING FEEDING TO TRANSPLANTING DEVICE

abstract 1521908014 issue 152 pp. 129 – 140 31.10.2019 ru 3
Transplanting seedling into the field is an extremely important period for all seedling crops, as the plant passes through basic vegetation stages. After carried analysis of seedling transplantation machines utilization it became obvious that they all have low technical and exploitation parameters. The purpose of the research was elaboration of theoretical bases for calculating parameters of a unit for seedling feeding to transplanting device, which implementation will lead to increase efficiency of transplanting. The article presents the results of theoretical researches for proving parameters of a unit for seedling feeding to transplanting device. A system of equations for acting at seedling forces during its transportation from collecting drum to feeding drum is arranged. We have also calculated nomograms for defining drum rotating frequency depending on seedling friction coefficient on surfaces of collecting and feeding drums. Parameters of pneumatic feeding drum were technologically proved. Its principle is equality of capacities of feeding unit and transplanting device. We have elaborated a nomogram for defining feeding drum rotating frequency depending on plant spacing and velocity of transplanting machine
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USING NEURAL NETWORKS FOR THE PROJECT TEAM SELECTION

abstract 1531909006 issue 153 pp. 66 – 74 29.11.2019 ru 3
The study was carried out with the financial support of the RHNF as part of the research project of the RFBR 17-02-00475-OGN "Application of metaheuristic algorithms for solving direct and inverse problems of optimizing the management of spatially distributed complexes"). The article considers the issue of automated selection of specialists for the project. It is proposed to use artificial neural networks as a decisive core of the system. We have considered several solutions to the problem with a basic version based on a cascade of two neural networks
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MATHEMATICAL MODELING OF PSP SENSOR SYNCHRONIZATION ON LOW QUALITY CHANNELS

abstract 1541910003 issue 154 pp. 17 – 22 30.12.2019 ru 3
The purpose of this work is to find the boundary estimate of the synchronization of PSP sensors in low-quality channels according to the method of the test segment (OST), independent of the distribution of errors in the channel
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APPLICATION OF THE MONTE-CARLO METHOD WHEN STUDYING THE PROPERTIES OF STATISTICAL TESTS OF HOMOGENEITY OF TWO INDEPENDENT SAMPLES

abstract 1541910007 issue 154 pp. 55 – 83 30.12.2019 ru 3
The instrumental methods of economics include the Monte Carlo method (statistical simulations method). It is widely used in the development, study and application of mathematical research methods in econometrics, applied statistics, organizational and economic modeling, in the development and making management decisions, in the basis of simulation modeling. The new paradigm of mathematical research methods developed by us is based on the use of the Monte Carlo method. In mathematical statistics, limit theorems on the asymptotic behavior of the considered random values were obtained for many methods of data analysis with an unlimited increase in sample volumes. The next step is to study the properties of these random values for finite sample sizes. For such a study, the Monte-Carlo method is used. In this article, we use this method to study the properties of statistical criteria for testing the homogeneity of two independent samples. We considered the most used in the analysis of real data criteria - Cramer-Welch, which coincides with the equality of the sample sizes with Student's criterion; Lord, Wilcoxon (Mann-Whitney), Wolfowitz, Van der Waerden, Smirnov, type omega-square (Lehmann-Rosenblatt). The Monte Carlo method allows us to estimate the rates of convergence of distributions of criteria statistics to the limits, to compare the properties of the criteria for finite sample sizes. To use the Monte Carlo method, it is necessary to select the distribution functions of the elements of the two samples. For this purpose, normal and Weibull – Gnedenko distributions are used. The recommendation was received: to test the hypothesis of coincidence of distribution functions of two samples, it is advisable to use the Lehmann-Rosenblatt (type omega-square) test. If there is reason to assume that the distributions differ mainly by the shift, then the Wilcoxon test and Van der Waerden criteria can also be used. However, even in this case, the omega-square type test may be more powerful. In the general case, besides the Lehmann-Rosenblatt criterion, the use of the Smirnov criterion is permissible, although for this criterion the real level of significance may differ from the nominal level of significance. We sstudied the frequency of discrepancies of statistical findings on different criteria
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DETERMINATION OF VIDEO IMAGES DELAY TIME

abstract 1541910025 issue 154 pp. 260 – 268 30.12.2019 ru 3
Video camera is the source of the image of the object selected for observation or protection. Video cameras are used to collect information, being sometimes indispensable device. When analyzing images, it is important that the condition for the accurate operation of the video frame transmission system is fulfilled. All cameras have a slight delay in image transmission. For image analysis, it is important to know the delay time
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PROMISING HYBRID FORMS OF ANEMONE CORONARIA

abstract 1552001010 issue 155 pp. 138 – 146 31.01.2020 ru 3
The article provides the results of hybrid forms studies and their control cultivars for several years of research. The phenological phases of Anemone coronaria experimental plants were studied during the autumn planting of tubers (October - November), biometric measurements were carried out. On average, seedlings in the control cultivars appeared after 5.6 weeks, and in hybrids – after 4.8 weeks. This period in the researched hybrid forms was shorter on 12% than in the control cultivars. The phase “from seedling emergence to flowering” was longer in the following hybrid forms: A-10-1 (for 7 days), M-3-97 (for 5 days), than in the control cultivars. The earliest flowering was observed in the M-4-98 hybrid form (March, 23), and at the latest - in the M-3-97 hybrid form (April, 4). The flower diameter in the A-10-1 hybrid form is 31.1% larger, than its control cultivar, in the G-13-133 hybrid form - 27.1% more, in the hybrid form M-3-97 - 13.6% more, and the hybrid M-4-98 - 18.8% more. The flowering time of hybrid forms is 63 days (9 weeks), and their control cultivars - 51 days (7.3 weeks). The vegetation period of the investigate plants was not exceed 174 days. Vegetation of the hybrid forms A-10-1, M-3-97, and M-4-98 lasted 32, 23, and 14 days longer than in their control cultivars
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EXISTENCE OF ASYMPTOTICALLY OPTIMAL PLANS IN DISCRETE PROBLEMS OF DYNAMIC PROGRAMMING

abstract 1552001012 issue 155 pp. 147 – 163 31.01.2020 ru 3
Dynamic programming is designed to solve discrete optimal control problems. According to this method, the optimal solution in a multidimensional problem is found by decomposing it into stages, each of which represents a subproblem with respect to one variable. In economic problems, the number of stages is the planning horizon. The choice of a planning horizon is necessary for a rigorous statement of the applied problem in the field of economics and management, but it is often difficult to justify. We see a way out in the use of asymptotically optimal plans for which the values of the optimization criterion differ little from its values for optimal plans for all sufficiently large planning horizons. The main result of the paper is the existence of an asymptotically optimal plan. The proof is carried out in several statements. If the sum of the maximums of the transition functions tends to 0, the existence of an asymptotically optimal plan is obtained in Theorem 1. A special case is models with a discount at a discount coefficient less than 1. The main part of the article is devoted to models with a discount coefficient equal to 1. Theorem 2 on the highway is proved for base set of a finite number of elements. In Theorem 3, a statement is obtained on the approximation of an arbitrary set by a finite one. In the final Theorem 4, the existence of an asymptotically optimal plan is proved in the general case. The term “magistral” is associated with a well-known recommendation to drivers: in order to get from point A to point B, it is advisable to go to the highway (magistral) at the initial section of the road, and then exit the highway and get to point B. The recommendation for choosing the optimal one is similar trajectories using the Pontryagin maximum principle in the model of the optimal distribution of time between obtaining knowledge and developing skills. This fact underlines the methodological proximity of dynamic programming and the Pontryagin maximum principle
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