The results of development of rice breeding lines, carrying the wide range resistance gene to rice blast disease - Pi-40. For identification of the dominant allele of the gene the DNA - marker analysis was used. With co-dominant DNA markers plants from inbred populations that carry a dominant allele of this gene in the homozygous state were selected
The key task of the agriculture in Russia is the further
improvement of grain production. Thus, prevention of
losses of winter wheat yields because of the diseases
remains relevant. The significance of varieties tolerant
to diseases, especially to smut (fungus) is of primary
importance. Therefore, it’s essential to create initial
material for breeding of the varieties tolerant to smut.
According to the results of the trials with artificial
infection with pathogens, among the samples of
winter wheat there have been identified varieties
belonging to different groups of tolerance to smut.
They are a highly sensitive cultivar ‘к-69361’
(Korea), a sensitive variety ‘Izyuminka’ (Russia),
moderately sensitive variety ‘Asket’ (Russia) and
almost tolerant variety ‘1621/03’ (Russia). We studied
the reaction of the hybrids F2 on infection with smut
in different variants of hybridization to obtain stable
progeny. The correlation between the number of
infected plants in parent and hybrid (F2) populations
have been considered. The productive tillering of the
plants has been determined in all variants of the trials;
it was the least one on the plants with 100% of
infected leaves. The hybrids F3 and F 4 have been
distributed according to the degree of their tolerance
to smut. For further work we have selected the lines
with practical resistance to smut (fungus)
In the conditions of foothill soil-climatic zones of the Republic of Dagestan we have explored the creation of low-cost intensive apple orchards. This work was initiated by the authors in 2011 due to the Republic "Horticulture Development Program for 2011-2016", according to which, it was planned to plant 6,200 hectares of new gardens. However, the experience of gardening in the Republic, taking into account recently prevailing socio-economic relations, subsidized nature of the economic and a chronic lack of funds, shows the riskiness of the creation of high-tech pillar-dwarf plants with the cost of 1-1,5 million rubles per hectare. Inability to overcome quickly the existing problems in the development of the industry sharp gardening at this stage, forced us to seek a way in a single direction - reducing the cost of the creation of apple orchards, while maintaining their high economic efficiency. Theoretical studies were realized as a planting of the apple garden in the district of Karabudakhkent of Dagestan of four perspective late-ripening varieties on the medium growing rootstock in the spring of 2013. The results of the three years of scientific research were embodied in the creation of intensive apple garden on the medium growing rootstock which allow now to make the following preliminary conclusions: 1.It is possible here in Dagestan to create intensive apple orchards, with an estimated yield of 30-40 tons per hectare, on the medium growing rootstock already at a density of 666 trees per hectare. 2. Cost of such a garden, without compromising quality indicators, can be reduced in the current market price of labor and the necessary materials, up to 214 thousand rubles per hectare, with access to the full return of all costs in the seventh year of operation. Such intensive garden, according to common practice, during the period of operation is able to give at least 22 full-weighty harvests and provide a net profit about 6.6 million rubles per hectare, or 236,000 rubles per hectare per year for the entire period of alienation of the land for a garden
The article researches a question of effective using of meat of sheep and chicken meat for increasing of product list
At present, the farmers have to develop varieties and
hybrids, which fully meet the requirements of
agricultural production. The study of correlation among
economic-valuable characteristics of grain sorghum is of
great importance nowadays, as it allows optimizing
plant-breeding work at its early stages. For a more
productive process of developing of the initial material in
breeding, it is necessary to determine the correlation
among the traits to identify the strongest connections,
and to conduct further work, based on the obtained data.
Knowing the correlation, the estimation of timeconsuming
economic trait can be replaced by the
assessment of the simpler trait correlated with it. The
article presents the analysis of correlation among various
traits of grain sorghum. The degree and direction of the
correlation have been estimated. The significant effect of
the length of vegetation period on many traits has been
seen. There have been also mentioned the characteristics,
having an influence on a size and a number of kernels
per panicle. There is a positive correlation between a size
of panicle and dimensions of a leaf (length, width).
Along with it there has been found a positive correlation
among linier dimensions of a panicle, length and width
of a leaf, a number of leaves with a number of kernels
per panicle. While studying the correlation between an
extension of a panicle with other traits, there has been
noted a negative correlation between a length of
vegetation period, length and width of a leaf, but there
has been found a positive correlation with plant height. There has been found a positive effect of 1000-kernel
weight, a number of kernels per panicle, a number of
leaves and their dimensions on the formation of kernel
weight per panicle
The article shows the ninth year of research on the
remineralization of leached chernozem. In the
plants of winter wheat, the content of macro and
micronutrients of nutrition under remineralization
of leached chernozem was investigated. It is
established that when introducing rocks, the
content of food elements in plants rises
The results of study of groups and forms of iron compounds in leached chernozemic soils of Western Ciscaucasia for three crop rotations according to scheme grain-grass-hoeing are presented. With long-term use of leached black soil in terms of Agrigento there is a substantial change in the contents of the various groups and iron compounds. On the non-fertilized variant of rotation, the total content of this element in the 0-20 cm 21-40 cm soil layer by 69.4 and 66.5% of silicate and by 30.6% and 33.5% free group of compounds of iron. The applied system of fertilizer crop rotation helps reduce the silicate and increase of free group its compounds. In leached black soil a group of desilicated iron in the 0-20 cm layer 24.8 % presents crystallizability and to 75.2% amorphous compounds, 21-40 cm layer, respectively, 26.2 and 73,8 %. Under the influence of fertilizers we have noticed increasing of amorphous and reducing the number of cristallizing forms of the compounds of this element the soil. The number of different groups and forms of iron compounds in leached black soil with systematic use of fertilizers in crop rotation is determined not by the size of introducing this element as impurities, and processes such as the alienation of iron with additional derived products, increase its mobility in the soil due to a shift in the reaction of the soil solution, changes in fractional-group composition of humus. Diagnostic criteria state of iron in the soil are leached quantitative ratio of the content of the various groups and forms of the compounds of this element
Great practical and theoretical interest comes with a study of the transformation of calcium agrobiogeochemical in agro-ecosystems. The basis of the stability of the soil, as an element of the structure and functioning of the biosphere, constitutes historically approved biochemical cycles and flows of matter and energy, which remain unchanged under anthropogenic impact. Comparative analysis of the total content of calcium leached black soil allowed us to establish its decline after three rotations of grain and grass-tilled crop rotation. Without the use of fertilizers its reduction from baseline was 5.25% in the layer 0-20 cm and 3.87% in the 20-40 cm layer, with their introduction - 9.14 and 9.35%, respectively. This trend suggests a decrease in calcium reserves in the root zone of leached black soil in its agricultural use; this process is more active when using mineral fertilizers. This is obviously due to a large outflow of elements in the fertilizer background with harvest crops, and partly due to the influence of mineral fertilizers as chemical reagents on mineral soils, resulting in the release of calcium and moving it into the lower soil horizons. Along with the total content of calcium and its forms, we have analyzed the activity of calcium ions and calcium potential
The most important component of current assets of the
agricultural organizations are material stocks. The optimum
quantity of them is necessary for production process.
The special aspects of formation and using of material
stocks in crop research on micro- and meso-levels
are considered in the article. It is established that the
stok of fertilizers, crop-protection agents, seeds and
planting material are exposed to considerable amplitudes
of fluctuations during the different periods of year. The
natural and biological cycle of development of plants
needs of concentration of material stocks at the beginning
of a production cycle that causes the necessity of
attraction of the credits and commercial loans. The author
studied material inputs structure in branch of crop
research in Krasnodar region and its change in dynamics.
The leading role of mineral fertilizers in formation
of cumulative material inputs is revealed and the level of
its production in the region is analysed. The researching
character of the article is confirmed by the calculations
and the analysis of legislative documents regarding recovery
and increasing of soil fertility in Kuban region.
The author emphasizes need of strengthening of the state
intervention in price control in the market of mineral
fertilizers, formations of sales system, aimed at minimization
of dealers number in a chain "production – processing
– consumption"
In article the review of results of studying a contamination of crops of mid-season hybrid of corn Valentin depending on option of the main processing of the and herbicide processing (in common Harnes with Luvaram and Titus with Harmony) under conditions of sufficient moisture zone of the Central Ciscaucasia is given.