A protection of cabbage crops against the сruciferous flea beetles of the genus Phyllotreta with using the feed traps

UDC 632.7: 635.33

Asyakin B.P.

Leaf beetles from the genus of cruciferous fleas – Phyllotreta (Coleoptera, Chrysomelidae) can be dangerous pests of cabbage and other cabbage crops at the early stages of plant organogenesis in many agro-climatic zones. Of these, in the Northwestern region of Russia, the wavy flea Phyllotreta undulata Kutsch has the greatest harmful value. The purpose of the study: to study the effectiveness of the use of feed traps in the conditions of the North-Western region of Russia. The research was carried out in 2005–2010 at the experimental field of the VIZR (St. Petersburg – Pushkin) according to generally accepted methods. To make traps, 5 g of cruciferous seeds (cabbage, radish, rapeseed, white mustard, etc.) were taken, which were ground in a laboratory mill. Then the ground seeds were placed in a glass jar, into which 0,5 liters of water was poured, heated to 30–40 °C. The jar was closed and left for 30 minutes to ferment the seeds. After that, 10 g of detergent was added to the jar. The resulting mixture was stirred, then filtered through a sieve and poured into traps, which can be used as Petri dishes with a diameter of 10 cm. 50 ml of seed extract was poured into one trap. The traps were installed at an elevation of 20–25 cm above the soil surface, first among flowering cruciferous weeds (bittercress, Eastern sverbiga, etc.), and after the emergence of cruciferous plants (radish, rutabaga, etc.) in the immediate vicinity of them. Removal of insects trapped in them is carried out daily in the morning, simultaneously with the change of the contents of the traps. It is proposed to use such traps not only for monitoring the number of cruciferous fleas, but also for mass trapping of these beetles in order to reduce their harmfulness on cruciferous crops in homesteads, suburban areas and farm fields. As a bait material in traps, it is desirable to use rapeseed seeds, which have the greatest attractiveness for fleas compared to seeds of other cabbage crops.

Key words: сruciferous fleas, cabbage, variety, attractiveness, feed traps

Asyakin B.P., Cand. Sci (Biol.), leading specialist, lab. of agricultural entomology. FSBSI VIZR. E-mail: fasulatiser.spb@mail.ru
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For citing: Asyakin B.P. A protection of cabbage crops against the сruciferous flea beetles of the genus Phyllotreta with using the feed traps. Potato and vegetables. 2023. No2. Pp. 25–27. https://doi.org/10.25630/PAV.2023.88.69.001 (In Russ.).

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