Fruit growing
and viticulture of South Russia
Pear psylla Psylla pyri L. it is one of the main pests of pears worldwide. Decisions on the timing of preventive treatments and the choice of plant protection products used are made on the basis of regular monitoring of the stages of phytophagan development and taking into account the specifics of the action of insecticides on a particular stage of pest development. The article analyzes the range of insecticides allowed on pear against pear psylla, which is represented by preparations from 8 chemical classes. To reduce the resistance of pear psylla to the used pesticides, it is necessary to expand the range of broad-spectrum insecticides against this phytophagan. In this study, insecticides with larvicidal action, such as Voliam Flexi, SC, Lirum, SC, Lufox, EC, were tested in laboratory conditions. The characteristics of the used pesticides are given and the mechanisms of their action are described.Samples of annual pear growth were selected in the Prikuban zone of the Zakuban horticulture subzone of the Krasnodar region, Ust-Labinsk district. As a result of the study, it was found that the following pesticides have the best biological efficacy against nymphs (first-third age) of pear psylla: Voliam Flexi, SC with a consumption rate of 0.5 l/ha and Lirum, SC 1.5 l/ha. On the seventh day, they showed a maximum biological efficacy of 100 %, which was at the level of the standard preparation Movento Energy, SC. In this experiment, Lufox, SC had low efficacy, due to the fact that the drug has a longer mechanism of action, it takes 10-12 days for a good effect. We recommend using the data obtained in the case of registration of tested preparations for the control of pear psylla.
Grape berries, which contain organic substances, vitamins, amino acids, minerals, aromatic substances, have valuable taste and nutritional properties. An important source of biologically active substances are the pulp, skin and seeds of grape berries containing a significant amount of essential components. The purpose of the work is to determine the biochemical parameters: biologically active, mineral and aroma-forming substances in the structural elements of Narma and Rkatsiteli grape varieties cultivated in Dagestan. A capillary electrophoresis system was used to determine vitamins, composition and number of cations. The research was carried out on the device Kapel 104T, RF, NPF LUMEX. The aroma-forming components in the experimental samples were identified using a gas chromatograph Crystal 2000M (RF). The mass concentration of antioxidants was measured on the device TSVET YAUZA 01-AA, (RF). The total amount of vitamins and vitamin-like substances in the autochthonous Narma variety was: in the pulp - 0.7123 mg/dm3 , in the skin 3.4101 mg/dm3 and in the seeds 3.7827 mg/dm3 . The total concentration of mineral elements in the skin of the studied grapes (Narma 33,2 mg/dm3 , Rkatsiteli 20,8 mg/dm3 ) is higher than in the pulp and seeds. Significant total amounts of antioxidants were found in the seeds of the studied grapes: Narma 6.71 mg/dm3 , Rkatsiteli 8.51 mg/dm3. High concentrations of aroma-forming substances were determined in the skin and seeds of berries of the Narma variety 376.26 and 253.71 mg/dm3 , and in the Rkatsiteli variety the content of these compounds was 82.34 and 91.00 mg/dm3 , respectively. The research results complement the biochemical characteristics of Narma and Rkatsiteli grape varieties, which can be successfully used as raw materials in the food industry to enrich food with biologically active, mineral and aroma-forming substances.
The necessity of developing multifactorial models for managing the sustainability of reproductive processes in perennial agrocenoses with the participation of orchard crops and grapes is substantiated. The factors influencing the sustainability and efficiency of the production of fruit products and grapes in the Krasnodar region have been identified. Cognitive models for managing the sustainability of reproductive processes in perennial agrocenoses based on technological processes of elements of the fruit and grape-growing management system have been developed. Models for managing the sustainability of reproductive processes are based on cognitive methods of analysis and digital technologies, taking into account the identified systemic relationships in reproductive processes in functional areas of impact according to criteria of efficiency; biologization; environmental management. Cognitive models have made it possible to identify multifunctional relationships in reproductive processes in functional areas of influence, the optimization of which is the basis for the development of digital technologies. The results of cognitive modeling will be the basis for solving applied problems to increase the productivity of fruit agrocenoses, reduce the level of chemical and anthropogenic load on their elements and optimize the costs of production of industrial products. normative parametric model of the stability of reproductive processes in perennial agrocenoses with the participation of orchard crops and grapes has been developed. The tools for managing biotechnological processes in the elements of agrocenosis are proposed.
The article presents the results of agrobiological and physiological-biochemical studies to ensure the stability of grape plantations in unstable weather conditions and anthropogenic intensification of production. Studies in the agroecological conditions of the Krasnodar region on the southern chernozems revealed the most productive norm of loading of grape bushes with shoots for the technical varieties Kurchanskiy, Dmitriy, Vladimir, Granatovyi, Antaris and Alkor, on leached chernozems for the table seedless variety Centennial Seedless. According to the results of electrophoretic separation of peroxidases in polyacrylamide gel and an increased content of ascorbic acid, increased frost resistance was established in the varieties Kristall, Vostorg, Krasnostop AZOS. The Vostorg and Zarif varieties proved to be more adaptive to the stresses of the summer period in terms of leaf hydration, bound water content, the ratio of chlorophylls and carotenoids, the amount of proline and water-soluble sugars, membrane permeability. The role of physiologically active substances in increasing the adaptive potential of grape plants has been established. The treatment of Merlot vines with methyl jasmonate and epibrassinolide during deep dormancy period, as well as proline, salicylic acid and epibrassinolide during induced dormancy period had a positive effect on the condition of the vine: there was a decrease in electrolyte yield. Sustainable grape cultivation is achieved with the systemic use of the Bioconcentrate-Z effluent by the non-root method. Against the background of nonroot treatments of Merlot and Cabernet Sauvignon varieties, a higher level of plant water supply, an increase in potassium content, green pigments, organic acids and grape yields were established. Physiologically active compounds and the preparation Turinbash have a positive effect in intensive own-root plantations of native and promising introduced grape varieties against the background of phylloxera infection in the southern part of Dagestan. The created yield forecasting method based on the NDVI of the grape plant and the actual data of multispectral images of the phenophases of flowering and growth allows to increase the accuracy of the calculated yield capacity to the actual one with a deviation from 0 to 0.8 kg per bush, the accuracy of the forecast increases by 2 times by the end of the growth phase and by the beginning of the maturation phase.
The study presents the results of a comprehensive phenotypic and genotypic assessment of the gene pool of orchard crops, grapes and breeding of new generation varieties. Taking into account changing weather and climatic conditions, intensification of technologies for cultivating orchard crops and grapes, the need to change the focus of breeding work is becoming more urgent, in terms of increasing the adaptability of varieties. The purpose of the research was to mobilize, preserve, study the gene pool, identify genes for valuable traits using DNA markers, and create varieties with high productive potential. In conjunction with this, the NCFSCHVW preserves a gene pool of 7,240 genotypes, 632 donors and sources of valuable traits. For the first time, promising DNA-markers Ps12a02a and CPPCT006, priority ones for genetic analysis, have been identified for the evaluation of sweet cherry varieties. The polymorphism of DNA-markers used for genotyping of grape varieties was established: UDV305 and UDV737, linked to the Rpv3 gene for resistance to downy mildew, GF15-42, SCGF15-02, linked to the Ren3 gene, and CenGen6, linked to the Ren9 gene for resistance to grape powdery mildew. DNA-marking made it possible to identify donor grape varieties Moldova bessemyannaya (resistance to downy mildew by the Rpv3 gene), Kishmish Zaporozhskiy (resistance to powdery mildew by the Ren3 and Ren9 genes); donor of apple tree immunity to scab according to the Rvi6 gene elite 12/2-21-27. Analysis of the hybrid progeny of strawberries made it possible to identify the donor of large fruit Nelly variety. 26 unique DNA passports of domestic grape, plum and apple varieties have been developed. Based on a comprehensive assessment of varieties of orchard crops and grapes, 45 sources were established for important characteristics: adaptability, productivity, tolerance to root phylloxera, seedlessness of grapes, productivity in the mother plantings, easy propagation by cuttings, etc. 16 elite forms were obtained with breeding-significant traits, allowing to optimize the assortment of garden crops and grapes. To create stable and productive agrocenoses and ampelocenoses in the conditions of the North Caucasus, 20 varieties with high ecological plasticity and manufacturability are recommended.