Scientific Journal of KubSAU

Polythematic online scientific journal
of Kuban State Agrarian University
ISSN 1990-4665
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Name

Naydenov Aleksandr Semenovich

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Academic rank

professor

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Kuban State Agrarian University
   

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Articles count: 5

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340 kb

DYNAMICS OF MOISTURE IN SOIL AND EFFICIENCY OF ITS USE BY SOY BEANS UNDER DIFFERENT WAYS OF MAIN SOIL TREATMENT AND DOSES OF MINERAL FERTILIZERS

abstract 1191605040 issue 119 pp. 553 – 566 31.05.2016 ru 154
In the article there were given the results of researches for 20110–2012 obtained of many years stationary experience of the chair of general and irrigated land management of Kuban State Agrarian University on study of main soil treatment influence and doses of mineral fertilizers under soy beans on dynamics of moisture in soil and efficiency of its use by this cultivar. There was determined that from all studied variants the ploughing on 20–22 cm led to the higher accumulation of moisture for autumn-winter period. The decrease of productive moisture reserves on 6-9 % was observed on the types with surface treatment and direct sowing. The increase of soil treatment depth and doses of mineral fertilizers promoted to the better accessibility of moisture during vegetation period and correspondently to their greater expenses. Moreover, there was revealed the more rational use of water by soy beans under mouldboard soil treatment and introduction of mineral fertilizers in the dose of N90P120, it discovers the high effectiveness of present agricultural methods. The highest productivity of soy beans in the experience was achieved by means of ploughing on 20–22 cm and introduction of mineral fertilizers as a main type of soil treatment
178 kb

EFFICIENCY OF DIFFERENT TECHNOLOGIES OF SUNFLOWER CULTIVATION

abstract 0591005015 issue 59 pp. 244 – 254 31.05.2010 ru 1752
In the article results of a comparative study of technologies of cultivation of sunflower with application and without application of herbicides are resulted, and also their economic assessment is given
157 kb

INFLUENCE OF TILLAGE AND CHEMICAL WAY TO CONTROL WEEDS ON WINTER WHEAT PRODUCTIVITY UNDER THE CONDITIONS OF THE PLAIN-EROSIVE AGROLANDSCAPE

abstract 1341710002 issue 134 pp. 14 – 26 29.12.2017 ru 73
This article discusses the results of the study to determine the impact of different primary tillage and herbicide against weeds in winter wheat agrocenosis. The task of the research was to determine the impact of primary tillage (moldboard plowing and surface treatment) factor A and herbicide (Lancelot) factor B on the agro-physical and agrochemical soil properties. It has been established that the content of productive moisture during the growing period of winter wheat in 0-100 cm of soil layer didn’t depend on the method of tillage. Introduction of herbicide Lancelot boosted the moisture reserves in soil compared to the control type, in the herbicide-free type the weeds absorb the large amounts of moisture. Surface soil treatment did not have negative effects on soil agro-physical properties and its structure in comparison with moldboard plowing. Number of agronomically valuable aggregates on moldboard plowing is 85.2 - 87.5%, on surface one is - 86.2 87.5%. Density of composition and waterproof aggregates under surface treatment didn’t defer to tillage. Accumulation of wet and dry mass by weeds regardless to the way of soil tillage declined to a minimum when introducing the herbicide Lancelot. The high yield of winter wheat was obtained on this type. Mathematical processing results have shown that due to factor A (main soil tillage) to moldboard plowing the average productivity is 57.5 kg/ha, on surface one is 56.0 kg/ha, i.e. the difference between treatments is 1.5 t/ha (with NSR05 on factor - 2.9 t/ha) is insignificant. To factor B (herbicides) on control the productivity is 54.5 kg/ha, introduction of Lancelot increased the productivity to 59.5 t/ha, i.e. the increase was 5.5 kg/ha at NSR05-by the factor B-2.9 t/ha, i.e. is significant. Thus, the present soil treatments had no effect on yield of winter wheat in ordinary black soil. The use of herbicide Lancelot has produced the harvest increase in 0.5 t/ha on average for 2 years
173 kb

INFLUENCE OF WAYS OF MAIN SOIL TREATMENT UNDER SOYA BEANS ON CHANGE OF AGROPHYSICAL INDEXES OF LEACHED BLACK SOIL

abstract 1091505057 issue 109 pp. 837 – 847 29.05.2015 ru 429
There were cited the results of researches for 2010-2012 obtained in the stationary experiment of the chair of general and irrigated land management of Kuban State Agrarian University on the study of influence of the system of main soil processing under soya beans on the dynamics of main agrophysical indexes of leached black soil: on density of composition, solidity, general porosity, coefficient of structural properties in the article. There was stated that in the beginning of vegetation on the background of direct sowing of soya beans, the soil layer in 0-30 cm was characterized by values of density and solidity and in the result of it we observed the weak development of the root system. The worsening of air regime led to the decrease of symbiotic nitrogen fixation, it negatively affected on the growth and development of a cultivar. Agrophysical indexes brought nearer to optimal on variants with disposal tip on 20-22 cm and disk-shaped hulling on 8-10 cm. The worsening of investigated agrophysical soil indexes has been happened since the phase of florescence – soya bean formation till the harvesting. But the variant with disposal tip where we observed the high content of agronomically valuable fraction at the coefficient of structural property 2,42 was the closest to optimal ones. The minimization of soil treatment and especially the denial from its implementation significantly made worse the main agrophysical indexes of soil on variants with direct sowing to critical values for soya beans
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