name
Kravtsova Natalia Nikolaevna
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
• Kuban State Agrarian University
кафедра общего и орошаемого земледелия КубГАУ.
доцент кафедры
Research interests
Совершенствование технологий выращивания сельскохозяйственных культур
Web site url
—
Current rating (overall rating of articles)
0
TOP5 co-authors
Articles count: 11
Сформировать список работ, опубликованных в Научном журнале КубГАУ
-
Description
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
-
Description
This article discusses the results of research on the effect of soil treatment on agro-physical performance and productivity of major field crops. The task of the research was to determine the impact of primary tillage (moldboard plowing), surface treatment (minimum) and zero (direct seeding) is factor A, fertilizers – B, and herbicides as factor C for agro-physical properties of soil. We have found that high density led to a significant increase in the proportion of the stone faction in the structural composition of the soil. Deterioration of the agro-physical properties while minimizing soil tillage has negatively affected water, air and food regimes under crops rotation. When all methods of soil tillage are applied, the moisture reserves in the 0-200 cm layer in early spring had the lowest values of moisture-holding capacity (230-272 mm) and were defined by the features of weather conditions and past cultures. At the time of sowing, their number decreased by 12% (203-241 mm). The most economical way of spending moisture was shown by plants on the moldboard tillage. In autumn, fewer weeds (7-11 PCs/m2) there were in the options for ploughing. When the surface and zero ways of soil treatments were applied, their number for 1 m2 was 1.2-1.9 times bigger. We effectively eliminated weeds only when applying herbicides. Different crop cultures reacted differently to minimizing the tillage. The greatest reduction in yield was observed when applied surface and zero tillage in cultivated crops. Thus, studies have shown that in order to obtain maximum yields of field crops of crop rotation, reducing production costs, there must be a rational combination of deep or conventional plough tillage for surface or zero tilled for grain crops
-
GROWTH AND DEVELOPMENT OF CORN DEPENDING ON THE DENSE OF THE STATION OF PLANTS AND SEED DRILLER
06.01.01 General agriculture, crop production (agricultural sciences)
Description
The article gives an overview of the results of a study of the growth and development of corn in the conditions of the Northern zone of the Krasnodar region depending on the density of plant standing and seed treatment. The object of the research was an early-ripe hybrid of Ross 199 corn. Two factors were studied in the experiment: factor A - plant stand density (60, 70 and 80 thousand units / ha), factor B - seed dresser (Maxim XL (k) and Maxim Quatro). The subject of research is included in the thematic plan of scientific research of the Department of General and Irrigated Agriculture of KubSAU. The total area of the plot is 1008 m2, the accounting area is 672 m2. The number of rows in the plot is only 8, including accounting - 4. plots The plots are placed systematically. Repeating: 3-fold. The predecessor is winter cereal crops (wheat). The counts and observations in the experiment were carried out according to generally accepted methods. The studies have established that the duration of the interphase and vegetation periods of corn plants depended on the density of plant standing, and with the thickening of crops, it decreased, and protectants did not affect this indicator. In all phases of determination, the maximum height of corn plants was noted with a plant standing density of 80 thousand units / ha. The studied dressers Maxim XL and Maxim Quattro had practically no effect on height. The diameter of the second internode decreased with thickening of the crop
-
AGRO-BIOLOGICAL INDICATORS OF CORN DEPENDING ON THE DENSE OF PLANT STANDING AND SEED PROTECTOR
06.01.01 General agriculture, crop production (agricultural sciences)
Description
The article provides an overview of the results of the study of the growth and development of corn in the conditions of the northern zone of the Krasnodar region, depending on the density of plant standing and seed dressing. The object of research was an early-ripe hybrid of Ross 199 corn. Two factors were studied in the experiment: factor A - plant stand density (60, 70 and 80 thousand units / ha), factor B - seed dresser (Maxim XL (k) and Maxim Quatro). The studies were carried out in accordance with the thematic plan of scientific research of the Department of General and Irrigated Agriculture of Kuban State Agrarian University. The total area of the plot is 1008 m2, the accounting area is 672 m2. The number of rows in the plot is only 8, including accounting - 4. The arrangement of the plots is systematic. Three repetition. The predecessor is winter wheat. The calculations and observations in the experiment were carried out according to generally accepted methods. The technology of growing corn in the experimental plot corresponded to generally accepted for this zone and culture. The predecessor is winter wheat. Our studies have found that the leaf area was largely influenced by the density of plant standing – with the thickening of crops, it decreased by 2.9 thousand m2 / ha or 28.7 %, and there were practically no differences in the leaf area between different variants of seed treatment. Corn plants increase the accumulation of dry matter throughout the growing season. With an increase in the density of plant standing, the accumulation of dry matter decreases, and the studied protectants do not affect this indicator
-
GROWTH AND DEVELOPMENT OF SUGAR CORN DEPENDING ON NITROGEN FERTILIZERS
06.01.01 General agriculture, crop production (agricultural sciences)
Description
The article provides an overview of the results of a study of the effect of nitrogen fertilizers (sowing and top dressing) on the growth and development of sugar corn plants. The object of research was the mid-early hybrid of corn called Krasnodar Sugar 280 NE (FAO 280). In the experiment, 2 factors were studied: factor Ā - sowing nitrogen fertilizer (b / b (k), 15 and 30 kg.d.v / ha), factor B - root nitrogen top dressing (b / b (k), 15 and 30 kg.dv./ha). The total area of the plot is 20 m2, the accounting area is 10 m2. The number of rows in the plot is only 4, including accounting - 2. The plots are systematically placed. In the fall, the main fertilizer was applied in the background at a dose of N30P60K60, under plowing. Repeating four times. The predecessor is winter wheat. The counts and observations in the experiment were carried out according to generally accepted methods. Studies have established that the phases of “seedlings” and “5-6 leaves” did not depend on nitrogen fertilizers. The “panicle panning” phase in the variants with the introduction of nitrogen occurred 2 days later, and the phase "milk ripeness on the cob" - for 1 day. The height of the plants of the control variant was 202 cm. With an increase in the dose of nitrogen, the height of the plants of sweet corn increased. The maximum (12 cm higher) plant height was on the option using N30 for sowing and root dressing
-
PRODUCTIVITY OF SUGAR CORN DEPENDING ON NITROGEN FERTILIZERS
06.01.01 General agriculture, crop production (agricultural sciences)
Description
The article gives a review of the results of studying the features of the formation of sugar corn grain yield depending on the application of nitrogen mineral fertilizers used for sowing and fertilizing. The object of research was the mid-early hybrid of corn called Krasnodarsky Sakharny 280 SV (FAO 280). In the experiment, 2 factors were studied: factor Ā - sowing nitrogen fertilizer (b / ud (k), 15 and 30 kg.d.v. / ha), factor B - root nitrogen fertilizing (b / ud (k), 15 and 30 kg.dv./ha). The total area of the plot is 20 m2, the accounting area is 10 m2. The number of rows in the plot is only 4, including accounting - 2. The plots are systematically placed. In the fall, the main mineral fertilizer was applied at a dose of N30P60K60, under the main tillage - plowing to a depth of 25-27 cm. Four-fold repetition. The predecessor is winter wheat. The counts and observations in the experiment were carried out according to generally accepted methods. Studies have established that the highest yield of ears of sugar corn in milk ripeness - 14.60 and 14.71 t / ha, respectively, was obtained on options with the addition of N30 when sowing + N15 or N30 in root dressing. A further increase in the dosage of nitrogen to 60 kg.d.v./ha does not lead to an increase in yield. The highest level of profitability was obtained with the option of sowing nitrogen fertilizer at a dose of 30 kg.d.v / ha in combination with nitrogen for top dressing at a dose of 15 kg.d.v / ha (N30 + N15)
pdf 371.698kb
doc 371.698kb