Scientific Journal of KubSAU

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

Kravtsov Аleksey Mikhailovich

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professor

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Kuban State Agrarian University
   

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Articles count: 5

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363 kb

EFFICIENCY OF FERTILIZERS APPLICATION ON SUNFLOWER CROPS ON BLACK LEACHED SOILS WITH DIFFERENT SOIL FERTILITY LEVELS

abstract 1381804025 issue 138 pp. 106 – 121 30.04.2018 ru 103
In the article we present the results of perennial researches on the influence of norms of fertilizers on growth and productivity of sunflower on Chernozem (Black soil) with different levels of fertility in the Central zone of the Krasnodar region. The improvement of nutritional status of plants promoted increase in leaf area of sunflower in the flowering stage from 20.1 to 30.8 thousand m2/ ha and more accumulation of dry substances and major nutrients in plant tissues throughout the growing season. The greatest influence on the content of nitrogen and phosphorus in the leaves of 56 – 64 and 50 – 58%, in stalks of 40 – 62 and 39 – 42%, in baskets 43 – 59, and 38 -68%, respectively, provided the rate of fertilizer. The yield of sunflower seeds in average for three hybrids (Kubanskiy 341, Triumph, Legion) evolved in experiment parcels from 25.5 to 33, 4 ac./ha. The highest productivity of this crop is obtained when a high rate of fertilizer (N80Р120) is applied on soil with a high level of fertility. The increase of seed yield compared to control was 7.9 ac./ha or 30.9 %. While increasing the level of soil fertility and fertilizer amount, oil content of the seeds decreased from 46.9 to 44.5%, but the yield of oil increased from 1.20 to 1, 47 T/ha due to the growth of productivity
177 kb

IMPROVING THREE-DIMENSIONAL OBJECT VISUALIZATION USER INTERFACE WITH AUGMENTED REALITY TECHNOLOGY

abstract 1001406091 issue 100 pp. 1408 – 1420 30.06.2014 ru 940
The article describes hardware and software specific issues of implementing augmented reality for improving user interface of visualization of a virtual object. It also defines possible future improvements of the subject
138 kb

SUGAR BEET PRODUCTIVITY AND ALTERNATIVE GROWING TECHNOLOGIES ECONOMIC EFFICIENCY IN THE KRASNODAR REGION

abstract 0911307068 issue 91 pp. 962 – 974 30.09.2013 ru 1249
In the stationary multivariate experiment the effect of alternative technologies for cultivation of sugar beet for productivity and the economic efficiency of root crops production has been studied
173 kb

THE BALANCE OF HUMUS WITH LONG-TERM USE OF BLACK LEACED SOIL IN THE PLAIN AGROLANDSCAPES DEPENDING ON AGROTECHNOLOGIES OF CULTIVATION OF FIELD CROPS

abstract 1371803018 issue 137 pp. 91 – 105 30.03.2018 ru 83
In the article, following the results of the first rotation of crop rotation, we consider results of researches on influence of technologies of cultivation of crops of various degree of intensification in a link of field crop rotation on change of the content in arable layer of the black leached soil of one of the main indicators of fertility of the soil – general humus. Determination of the total humus content in the soil layer 0-20 cm under winter wheat cultivated after sugar beet, corn for grain and sunflower ranged in terms of technology options from 3.02 to 3.72 %. Application of organic fertilizers for sugar beet on the variants of the studied technologies, in order to simulate soil fertility levels, from 200 to 600 t/ha and their intermediate application to this crop with a norm of 30 to 120 t/ha contributed, regardless of the method of basic tillage, to an increase in the humus content in the soil from 3.38 to 3.65 %. In the future, as crops rotate in the link of crop rotation, within five years there was a drop in the total humus content in the arable layer according to the variants of the experiment from 0.09 to 0.21 %. Intensification of technologies, increase of crop productivity in the link of crop rotation contributed to the annual loss of humus by 0.02-0.04%. When applying the same average and high standards of organic fertilizers, humus content in the arable layer did not fall below the initial levels of soil fertility and was 3.25 – 3.44 %. This contributed to the maintenance of the total humus content, and therefore, the preservation of soil fertility compared with options where organic fertilizers were not used. It is established that at cultivation of field crops on technologies with application of the non – oval system of processing of the soil, the content of the General humus in a layer of the soil of 0-20 sm averaged 3,39 %. Application in the technologies of soil plowing reduced humus content in the soil to 3.30%, which was inferior to options with non-oval tillage by 0.09%. With the alternation in the rotation surface of the main processing of the soil under cereals and moldboard tilled under (ie recommended system primary tillage) were lost to 0.012% of humus per year, while in the technologies with annual moldboard with side effects of deep loosening tillage, dehumification was of 0.027% per year. In the process of researches it is established that the cultivation of crops in crop rotation on environmentally acceptable technologies with application of the average rate of organic fertilizers on the background recommended for the Central zone of the Krasnodar region the main processing system contributes more to the preservation of humus in the soil compared to extensive technology (control) to 0.04 % and 0.06 – 0.07 percent when using this technology on the background of moldboard and subsurface tillage treatments of the soil
156 kb

THE PRODUCTIVITY OF WINTER WHEAT DEPENDING ON THE TECHNOLOGY OF CULTIVATION AFTER ROW PREDECESSORS ON LEACHED CHERNOZEM (BLACKSOIL) OF WESTERN CISCAUCASIA

abstract 1061502023 issue 106 pp. 351 – 365 28.02.2015 ru 740
The study was conducted in a stationary multivariate experiment at the experimental station of Kuban State Agrarian University during eighteen years. The technology of growing winter wheat was improved by the optimization of norms of fertilizers and plant protection systems for different levels of soil fertility. Totally there were 48 technologies for growing winter wheat after and grain: corn, sunflower, sugar beet, where studied in the experiment. The best combination of high yield (77.2 t / ha) with high quality grain (nature - 789 g / l, the total vitreousness - 60%, -14.2% protein content, gluten content - 29.0%) was found under intense technology. The grain quality meets the requirements for the 2nd class. Similar productivity (yield - 76.4 t / ha, the total vitreousness - 55% protein content - 13.4% gluten content - 27.2%) was obtained in and when grown for its resource-saving technology also. All kinds of technologies for growing winter wheat studied in the experiment were profitable, but resource-saving technology was the most efficient. Net income per hectare under this technology was 31,745 rubles, and a cost of 1 quintal of grain - 284 rubles
.