Сontrol of potato diseases and pests using modern insecto-fungicidal products

Abstract

Goal. To study the effect of insect-fungicidal dressing agents on the development of diseases and damage by pests to potato tops and tubers during the growing season and during harvesting. Determine the effectiveness of drugs. Methods. Investigated combined dressing agents containing preparations of insecticidal and fungicidal action. The setting of experience, observation, accounting of harmful objects and determination of the effectiveness of the drugs were carried out using generally accepted research methods. Tuber analysis was carried out by determining each fraction in relation to the total mass of potatoes in the selected samples. The yield was determined by the gravimetric method. Results. The use of insect-fungicidal dressing agents for the pre-planting treatment of potato tubers has shown their high efficiency. The effectiveness of the disinfectants against the Colorado potato beetle was 100% the entire period from the emergence of adults to the mass development of larvae. Against dry spot, which dominated in potato plantings, the treatment efficiency was at the initial period at the level of 43.6—53.2%, for the entire observation period — at the level of 26—36%, depending on the preparation. The drugs Emesto Quantum, 273.5 FS, TH and Celest Top 312.5 FS were characterized by a high level of protective action, because with. The use of insect-fungicidal dressing agents increased the yield of healthy standard products by an average of 30% due to a decrease in tubers affected by diseases and damaged by pests. The potato yield in the experimental variants was 2.4—2.8 times higher than in the control (without treatment).The highest yield was obtained in variants with the use of the preparation Celest Top 312.5 FS, because with. and a mixture of insecticidal and fungicidal disinfectants Cruiser 350 FS, because with. + Maxim 025 FS, because with. Conclusions. The use of combined insecticidal and fungicidal disinfectants for the treatment of potato tubers had high technical, economic and economic efficiency. Treatment of tubers 100% controlled the development of the Colorado potato beetle during its mass development and significantly limited the development of Alternaria during the growing season. Due to the limitation of the development of pests and diseases on the tops and tubers, the yield of potatoes in the variants with dressing of tubers was 2.4—2.8 times higher than in the control (without treatment).