Abstract
The work presents the results of comparative field tests on effectiveness of insecticides and bioinsecticides and their tank mixtures for potatoes against the potato ladybird and the Colorado beetle in the South of the Far East. Effectiveness of preplanting and vegetation treatment of potatoes with preparations was observed. The study, conducted in 2012–2014 on the plants of the recognized Yantar potatoes variety, showed high biological efficiency of preparations from the neonicotinoid class of Prestige and Cruiser in the rates of 1.0 l/t and 0.2 l/t by pre-planting treatment of potato tubers. The Prestige and Cruiser provided long-term protective effect against the Colorado potato beetle and the potato ladybird, which eliminated the need for treatment in the growing season of the crop. The use of these insecticides caused productivity increase of potatoes by 7.5 and 8.4 t/ha. For vegetation treatment the preparation Decis Extra showed the highest and the most long-lasting effect. On the 28th day after the treatment, its effectiveness accounted for 84.4–90.3%. Protective effect of bio-insecticide Phytoverm lasted for 14 days. Double treatment of potatoes with this bio-insecticide restrained the number of pests below the threshold number until the end of the growing season. During the research it was found that the joint use of Phytoverm with 3 times lower rates of the insecticides Decis Extra and Konfidor provided a significant reduction in the number of the potato ladybird and the Colorado potato beetle and the preservation of 39.3-41.6% of potato productivity.
Highlights
Представлены результаты сравнительных испытаний эффективности инсектицидов, биоинсектицида и их баковых смесей на картофеле против картофельной коровки и колорадского жука в условиях юга Дальнего Востока
The work presents the results of comparative field tests on effectiveness of insecticides and bioinsecticides and their tank mixtures for potatoes against the potato ladybird and the Colorado beetle in the South of the Far East
The Prestige and Cruiser provided long-term protective effect against the Colorado potato beetle and the potato ladybird, which eliminated the need for treatment in the growing season of the crop
Summary
Эффективность применения инсектицидов для защиты картофеля от вредителей в Приморском крае. Ключевые слова: картофель, картофельная коровка, колорадский жук, инсектициды, биоинсектицид, биологическая эффективность, урожайность. В Приморском крае в настоящее время население почти полностью обеспечено им. Получение высоких и устойчивых урожаев картофеля невозможно без его защиты от вредителей. Существенный вред в Приморском крае наносят картофельная коровка Henosepilachna vigintioctomaculata Motschulsky, 1853 (Coleoptera, Coccinellidae) и колорадский жук Leptinotarsa decemlineata Say, 1824 (Coleoptera, Chrysomelidae). В связи с этим картофель становится одной из интенсивно обрабатываемых культур. Поэтому актуальны исследования по изысканию и изучению новых средств и технологий защиты картофеля от вредителей [1]. Цель исследования – изучить новые средства защиты картофеля от вредителей, обеспечивающие снижение потерь урожая и уменьшение пестицидной нагрузки на агроценоз картофельного поля
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