@article{Bakalova_Gritsyuk_Tytarenko_2022, title={UPGRADING OF OP–2000 SPRAYER FOR PROTECTION OF BLACK CURRANTS AGAINST SUCKING PESTS}, volume={45}, url={https://snaubulletin.com.ua/index.php/ab/article/view/523}, DOI={10.32845/agrobio.2021.3.1}, abstractNote={<p>Due to its taste, dietary, vitamin and consumer qualities, black currant is quite common crop for many farms and backyards. But unfortunately, like many other crops, it is prone to disease and pest damage, especially by pests with a prickly-sucking mouth apparatus. Therefore, the protection technology of black currants is currently a topical issue. The authors of the research propose the use of an upgraded OP–2000 sprayer with the improved features of special structural moving parts, for better efficiency of black currant bushes spraying. It was proved that the density of sucking phytophages decreased when sprayed with modernized, updated OP–2000 sprayer. Accordingly, the population rate of large currant aphid decreased by 0.34, redcurrant head aphid by 0.36, currant bud mite by 0.29 and common spider mite by 0.23 units compared to the use of OP-2000 rod sprayer. Researchers found out that the reduction in the number of sucking pests on blackcurrant plants had a positive effect on the formation of berries, and on an increase in the weight of 1000 berries, as well as on the weight of berries from the bush, which increased yields by 2.9 t/ha compared to the control version and 0.6 t/ha compared to the variant where a rod sprayer was used. The use of the device with special structural moving parts for the modernization of the OP–2000 sprayer provided an increase in economic efficiency. Thus, the net profit when using upgraded OP–2000 sprayer was UAH 63459–69587 /ha, profitability 350–362 %. When using the upgraded sprayer, the net profit increased by UAH 6128 per hectare, the profitability of the harvest – by 12 % compared to the use of a rod sprayer. Research data on the creation of special moving parts (SMP) was conducted for the first time and may be continued with further improved designs of the protection system of berry crops from pests.</p&gt;}, number={3}, journal={Bulletin of Sumy National Agrarian University. The series: Agronomy and Biology}, author={Bakalova, A. V. and Gritsyuk, N. V. and Tytarenko, V. Y.}, year={2022}, month={Feb.}, pages={3-9} }