In the North Caucasus there is about 50% of fruit plantations of the old type: stocks with strong and low power of growth, planting density from 320 to 416 trees/ha. The trees reach 6 feet high, the crown is thickened, minor crops and poor quality. One of the main causes of low profitability of such plantations is low intensity of pruning
The breed of grape of Hrisi Irini is bred in Greece by P.Zamanidi and L.Troshin in 2003 by mating of the Greek breed of Asirtiko with the French breed of Semilon. Duration of production period is 156-165 days. Growth of shoots is strong (2,1-3,0). Degree of ripening of a vine is very high. Productivity is high. Average mass of clusters is 200 Differs with high winter hardiness, drought resistance and the raised resistance to fungous diseases in comparison with breeds of Vitis vinifera L. Flower is bisexual. Cluster is average, cyclo-conical, average density. Berry is average, oval, greenish-yellow colour, with a dense bloom. A pellicle is dense. Pulp and juice with high-quality odour. Sugar content is very high, it reaches 40 % with constant acidity in air-dry clusters on bushes. The breed of Hrisi Irini is included in ecological and geographical group of breeds of basin of Black sea under its morpho-physiological characteristics. The breed is intended for manufacturing dry white wines of an excellent class, and also high-quality dessert, sweet and sparkling wines; it is applicable for production of high-quality juice, compotes as well. The breed is very perspective for southern zones where grapes have no sufficient acidity
Researches on assessment of peach-tree stocks stability to soil pathogens (nematodes, fungi and bacterial diseases) and to the excess of lime and moisture as well were carried out in the conditions of scientific-industrial enterprises of Agromillora Cotalana (Spain). Adaptation level of studied stocks to marked stressors was determined upon the results of this work. The steadiest to them are allocated. Various parameters of grades of a peach in these conditions are estimated
As a result of the research conducted there have been distinguished the sources and the donors for the subsequent usage in the selection programmers of stone-fruits assortment improvement
The article presents the results of researching into the effect of drip irrigation on build-up of soil salinity using water with high salt content and the dynamics of changes during winter period under atmospheric precipitation. It was established that at the end of irrigation season zones with high salt content formed on the soil surface under drip irrigation using sodium sulfate water, among these salts gypsum was presented. In spring time the increasing of sodium sulfate content was found that indicates the exchange reaction with soil exchange complex passed as well as the insufficient salt leaching occurred during the winter period. In spring time the upper soil layer characterized with alkaline type of soil salinization
The article reflects the results of experimental studies in heterosis breeding of corn. We defined the common (CCA) and specific (SCA) combining ability of the new material. We also obtained the valuable inbreeding lines and testers of corn, created based on these new hybrids. The final step was the evaluation of hybrids and calculation of economic efficiency of their implementation. As a result of the work, it was allocated the three hybrid combinations of corn and suggested to examine them in strain testing
In this article the perspective of using Lignas and Lavarin microfertilizers, which increase milt of winter wheat and give economical effect is shown
In the article the historical information about a condition of wine-growing and wine making branches of the Russian Federation - the most profitable branch of agriculture - from 1984 for 2008 is resulted; statistical and economic indicators are stated. For example, the area of vineyards has decreased from 190,1 thousand in hectares to 64,4, productivity fluctuated within 30,1-79,5 centner/hectares, etc. The information about wine-producing subjects of the Russian Federation Is resulted. The Program of development of wine growing and winemaking of the Russian Federation for 2008-2020 is observed, according to which the increase in the areas of vineyards from 64 to 172 thousand in hectares is provided, increase in volumes of manufacture of grapes from 300 thousand to 1,1 million tons, manufacture of table grapes will increase in 2 times, juice to 100 thousand gallons; it will be employed about 200 thousand persons in addition; the economy of regions will increase more than in 3 times is covered
The article presents the results of studies on the species composition of fungi isolated from seedlings of grapes affected by vascular necrosis
Indexes of biometric parameters of tree crowns and fruit productivity of Krupnoplodnaya, Valery Tchkalov, Vasilisa varieties depending on schemes of tree planting are presented in this article