Fruit growing
and viticulture of South Russia
Fomenko Taras
Articles in journal: (total 12)
Use of drip irrigation or fertigation in apple-tree plantations contributed to the decline of fruit shattering, an increase of their average weight and getting in some years of surplus up to 26-50 % compared to the naturally growing plants. However, to overcome the periodicity of fructification of apple-trees was not possible. In the summer conditions in the south of Russia drip irrigation did not affect the change in temperature and humidity of the ground layer of the air and, accordingly, did not contribute to the generative bud setting.
Leaf treatment of Liberty apple plants by preparation Regalis reduced of germ shattering that contributed increasing of yield and improving of fruit quality. Treatments by growth regulator Atonik Plus in stressful conditions of summer period prevented fruit abscission and improved their quality, quadruple treatment by this preparation increased apple yield. The yield surplus on 5,1 t/ha for account of increasing of fruit average weight is obtained by 3 times treatment of preparation Reasil Universal
The results of research of the features of the apple tree nutrition regimes in the different soil and climatic conditions of cultivation are presented. The different reaction of apple varieties on mineral nutrition levels is established
Three-year application of low-volume irrigation methods with the help of drip watering has caused some changes in the properties of chernozem soil in the orchard of apple trees, however a significant reduction in fertility is not revealed. In conditions of insufficient moistening of the Stavropol region the use of subsoil irrigation provided reliable additional yield of apple Liberty in drought years, and also increase in the average weight of fruit
Local use of mineral fertilizers with a fertigation of fruit plantings leads to essential change of agrichemical soil properties and formation in the soil of the centers of increased nutrients concentration. Therefore when we calculate the differentiated doses of use of mineral fertilizers it is necessary to consider the change of absolute traits of agrichemical soil properties in a zone of their local introduction. The purpose of research is to determine the change conformity to natural low of levels of an apple-tree providing with available nutrient elements in a zone of mineral fertilizers localization during a small-volume irrigation. The research were carried out under the conditions of unstable moistening of Krasnodar Region. The experience was started in the industrial apple-tree plantings on a dwarf M9 rootstock. The various norms of mineral fertilizers were introduced on the plots: fertigation norm of N30P4K20; fertigation norm of N45P6K30; fertigation norm of N60P8K40. It is found that increasing in norm of mineral fertilizers introduction led to increase in nutrient concentration in a zone of mineral fertilizer localization. It is determined that the local introduction of mineral fertilizers during fertigation on the plots with the increased background nutrient providing is irrationally. The optimization of conditions of the water and food modes during fertigation on the experimental plots promoted the increase in productivity of Champion apple-tree on 4,8-11,0 t/hectare and Prikubanskoye apple-trees - on 4,2-4,9 t/hectare. The conclusion follows that it is necessary to consider the change of absolute traits of agric and chemical soil properties in a zone of their local introduction when we calculate of the differentiated doses of use of mineral fertilizers. It will allow to correct the doses of their introduction taking into account the level of the soil providing of nutrient elements and will decrease in the environmental load.