Name
Kravchenko Roman Viktorovich
Scholastic degree
•
Academic rank
associated professor
Honorary rank
—
Organization, job position
Kuban State Agrarian University
Web site url
—
Articles count: 62
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
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
This article provides an overview of results of the conducting surveys on screening and saving gene pool of indigenous grape varieties in the Republic of Abkhazia, which contributed to detection and identification of the 15 previously described in the literature of Abkhazian native grape varieties
There was given the review of the results of the study
in the arid zone of Central Ciscaucasia, the influence
of planting terms and presowing seed treatment by the
drug called "TMTD-plus", containing the growth
stimulator Krezatsin in its composition, on the
development of corn hybrids of different maturity
groups of the selection of Krasnodar Research Institute
of Agriculture named after P.P. Lukyanenko (Ross
199, Ross 299, Krasnodar 382 and Krasnodar 410) and
the All-Russian Research Institute of Corn (Mashuk
170, Newton, RIC 345 and Eric), as well as middlematurity
population Rossiyskaya 1. The studies were
conducted in accordance with the thematic plan of
scientific researches of the chair of crop and forage
production of the Stavropol State Agrarian University.
The soil surface was presented as southern black earth.
The technology of growing of maize on the
experimental plot corresponds to the standard one for
the present area and cultivar. The predecessor is winter
wheat. Sowing was performed in three terms. The first
(early) sowing term was carried out at t = + 7 ... +8 °
C. The second (recommended) - when t = + 10 ... + 12
° C. The third (later) sowing time was carried out at t =
+15 ° C. The plant density: early-maturing hybrids –
70 thousand pieces/ha, is mid-maturing ones – 60
thousand pieces/ha, middle-ripe – 50 thousand
piece/ha, middle-later ones – 45 thousand pieces/ha.
The scheme is single-row, with spacing of 70 cm. The
application of the studied drug TMTD-plus helped to
reduce the growing season of maize plants for one -
two days. Thus, changing the sowing terms of maize
hybrids and populations, we can largely control the
development of plants changing the length of the
growing season to two weeks and form a harvesting
conveyor, thereby reducing the intensity of field work
In the article, the review of the results of test of 10 grade samples in five differing eco-geographical zones throughout six years is given. Their adaptive parameters are defined and the assessment of environments of test as a background for seed growing of beans is made
In article the review of results formation productivity as well as features bioenergetic and economic efficiency cultivation of mid-season hybrid of corn Valentin depending on the variant of primary tillage (in common Harnes with Luvaram and Titus with Harmony) under conditions of sufficient moisture zone of the Central Ciscaucasia is given.
The paper reviews the results of the study in in Anapо-Taman zone Krasnodar territory e of influence treatment vines Saperavi growth promoters Immunotsitofit, Krezatcina and HB-101ECO on quality parameters wine
The article reviews the results of the study of influence of treatment of Saperavi vines with growth promoters (Immunotsitofit, Krezatcina and HB-101ECO) on its productivity and quality in the Anapо-Taman zone of the Krasnodar region
The paper reviews the results of the study of small moisture conservation basic tillage cultivation technology in corn hybrids of different maturity groups of foreign breeding in areas of unstable moistening of the Stavropol Territory. The biological characteristics of plant growth and development of corn, as well as the formation yields of maize hybrids of different maturity groups, the nature of variation in their productive capacity and economic efficiency of small primary tillage are discussed
The article reports in color on the characteristics of the three varieties and their clones that are common in Afghanistan. In the process of ampelographic screening of vineyards in Afghanistan, three varieties previously undescribed in Russian literature under the local names Aita, Gundyan and Shandyhani were discovered. Their identification by ampelographic and ampelometric characteristics made it possible to establish the original Aita variety, the Gundyan variety as a synonym for Guladan and Shandyhani as a synonym for the world famous Sultanin, or Kishmish. The described varieties are quite common in Afghanistan, reputable in economic returns and are still promising for cultivation in their country, where they are successfully used in the manufacture of dried products and high-quality diet juices. To identify the impact of various environmental conditions on the growth, development, quantity and quality of the crop, these varieties must be tested in all zones of different ecological and geographical areas of cultivation