Blue honeysuckle (Lonicera caerulea var. kamtschatica Sevast.) is a valuable berry crop with a unique biochemical composition. It is rich in vitamins, minerals, and biologically active substances. Different species and cultivars of honeysuckle require different cultivation conditions in the field of accelerated reproduction in vitro. Taking into account the high clonal replication potential of the plant, we conducted research on the chelated-iron form’s influence on the micropropagation productivity of the blue honeysuckle “Lulia” cultivar at the multiplication, rooting, and subsequent acclimatization stages of microplants. In a preliminary study, five types of iron chelates were tested with carboxyl- and phosphorus-containing ligands: Fe(III)-EDTA, Fe(III)-DTPA, Fe(III)-EDDHA, Fe(III)-HEDP, and Fe(II)-HEDP. Each type of iron chelate was applied at four concentrations: standard, decreased by 2 times, and increased by 1.5 times and 2 times in the basic Murashige and Skoog (MS) nutrient medium. It was found that the blue honeysuckle “Lulia” had a selectivity to the type of iron chelate that was used. The nutrient-medium modifications with iron chelates, which caused the plant response, contributed to a significant improvement in the plant’s physiological status and increased its survival rate during the microplant’s acclimation to the nonsterile conditions stage. At the rooting stage, an increase in the rooting rate of up to 100% (Fe (III)-EDDHA), an increase in the number of shoots by 1.5–2 times, and an increase in the number of roots by 1.4–1.9 times were observed. The positive effect of the iron’s chelated forms was also observed at the acclimation stage. According to the results of the research, the most suitable iron forms for clonal micropropagation of blue honeysuckle were carboxyl-containing Fe(III)-EDDHA and phosphonate-containing Fe(II)-HEDP. Moreover, the effectiveness of both complexonates was confirmed in a wide concentration range: Fe(III)-EDDHA from (×1.0) to (×2.0), and Fe(II)-HEDP from (×0.5) up to (×1.5).
Relevance Currently, the requirements for modern tomato hybrids are increasing both from consumers and from producers. Modern tomato hybrids in extended circulation should yield at least 60 kg / m2, be distinguished by high quality of fruits, early ripeness, possess manufacturability, resistance to major diseases. Along with the traditional form of fruits, hybrids with original shape, color, taste and aroma are interesting for manufacturers. Methods The aim of the research was the variety study of indeterminant F1 hybrids of tomato breeding of the company "Gavrish" in JSC "Teplichnoye" of the Tambov region. Studies were conducted in 2017-2018 in the extended and summer-autumn turnover in the conditions of JSC "Teplichnoye" of the Tambov region in accordance with generally accepted recommendations for research with vegetable crops in greenhouses. The objects of the study in extended circulation were tomato hybrids: F1 Bao Bab, F1 Baloven, the F1 Torero hybrid was taken as a control. In the summerautumn turnover, a study was made of the rose hybrid – F1 Panthera; the Rosario F1 hybrid was used as a control; a hybrid with a plum-shaped fruit – F1 Armata, control – a hybrid F1 Lezghinka. Results According to the results of the study of tomato hybrids, the selection of the Gavrish company at the enterprise made the decision to grow it in extended circulation and increase the area under F1 Baloven, in the summer-autumn turnover under the F1 Panthera hybrid.
Phytosanitary monitoring of production crops of grain crops is an important component of the plant protection system, which provides timely information about the spread and development of harmful objects and allows timely management decisions on the conduct of extermination measures. This approach allows you to save the harvest, since the economic situation of agricultural producers of any form of ownership is determined by the receipt of high gross fees, cultivated crops. The paradigm of implementing control and management of the phytosanitary situation of crops is phytosanitary monitoring, which allows timely detection of harmful objects and signaling of control measures. This work is devoted to the study of these issues. Based on the conducted studies, information on phytosanitary monitoring of diseases and weeds is presented. The dynamics of the spread of the pathogen complex is revealed, plant protection measures are proposed and implemented. The features of the formation of wheat agrophytocenoses are shown, the quantitative and specific composition of weeds and the complex of pathogens are studied. The biological effectiveness of the use of pesticides has been determined. The agronomic efficiency of the plant protection system is analyzed. Keywords: PHYTOSANITARY MONITORING, WINTER WHEAT, SPRING WHEAT, WEEDS, DISEASES OF GRAIN CROPS
Представлены результаты исследований влияния способов выращивания гибридов огурца в условиях открытого грунта в Ярославской области на урожайность и качество продукции. Установлено достоверное превышение урожайно сти и выхода товарной продукции при выращивании рассадным способом на шпалере.The results of studies of the influence of methods of growing cucumber in open ground on yield and product quality are presented. A significant excess of yield and yield of commercial products when growing seedlings on the trellis is ascertained. The characteristics of hybrids suitable for cultivation for both the hobby and professional market is given.
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