Abstract
Slugs cause serious harm to nurseries and young plantations of fruit and berry crops in the Krasnodar region. On garden strawberries, the most common species is the field slug Deroceras agreste L., whose larvae damage ripe fruits and leaves, as well as contaminate them with their secretions and mucus, which leads to a decrease in the quality of seedlings and contributes to damage by secondary pests. In modern protection systems, the most commonly used pest control systems are molluscicides containing methaldehyde. The aim of our research was to assess the biological effectiveness of the molluscicides Sliznyakoff, G (60 g/kg methaldehyde) and Slizneed, G (60 g/kg methaldehyde) in controlling the abundance of field slugs in strawberry agrocenoses on the Clery variety. It was found that with an average number of phytophage larvae in the control variant (12.5-16.0 individuals / 10 m2), a single use of molluscicides causes 95.3 % mortality of D. agreste L. on the 7th day.
Highlights
Slugs pose a major hazard to young plantations of fruit and berry crops, and cause serious harm in nurseries and mother plantations
The most common species is the field slug Deroceras agreste L., whose larvae damage ripe fruits and leaves, as well as contaminate them with their secretions and mucus, which leads to a decrease in the quality of seedlings and contributes to damage by secondary pests
The aim of our research was to assess the biological effectiveness of the molluscicides Sliznyakoff, G (60 g/kg methaldehyde) and Slizneed, G (60 g/kg methaldehyde) in controlling the abundance of field slugs in strawberry agrocenoses on the Clery variety
Summary
Slugs pose a major hazard to young plantations of fruit and berry crops, and cause serious harm in nurseries and mother plantations. With a high number of slugs, they can completely destroy the nursery or young plantings of fruit, berry and ornamental crops. Molluscs do damage to in areas with annual precipitation over 500-650 mm, which includes the Krasnodar region. It is known from the scientific literature that the most common methods for controlling slugs are agrotechnical: loosening the soil, combating weeds, draining wetlands, thinning thickened plantings, etc.; mechanical - manual collection or catching with the help of artificial shelters; chemical - the use of chemical granules containing metaldehyde or carbamates (methiocarb or thiodicarb) [4, 5]. Molluscs contact with drugs through food intake or skin contact, which increases the secretion from the mucous cells of the slug, leading to dehydration, seizures and death [6, 7, 8]
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