Articles
BIOLOGICAL CONTROL OF TWO-SPOTTED SPIDER MITE TETRANYCHUS URTICAE ON STRAWBERRIES BY THE PREDATORY PHYTOSEIID MITE TYPHLODROMUS PYRI.
Article number
422_40
Pages
226 – 230
Language
Abstract
The predatory phytoseiid mite Typhlodromus pyri Scheuten, a strain, “Mikulov” from the south Moravian commercial vineyards, was released on strawberries infested with the two-spotted spider mite, Tetranychus urticae Koch, and grown under glass.
The initial average number of spider mites was 9.68 active stages per 1 trifoliate leaf when the predator was introduced to every plant in the beginning of April.
The initial predator : prey ratio was approximately 1 : 10, respectively.
No pesticides were used subsequently.
The predator gave good control of spider mites till fruiting in mid-May and henceforth despite frequent low air humidity and water deprivation of plants in a dry glasshouse.
The initial average number of spider mites was 9.68 active stages per 1 trifoliate leaf when the predator was introduced to every plant in the beginning of April.
The initial predator : prey ratio was approximately 1 : 10, respectively.
No pesticides were used subsequently.
The predator gave good control of spider mites till fruiting in mid-May and henceforth despite frequent low air humidity and water deprivation of plants in a dry glasshouse.
Authors
M. Zacharda, M. Hluchý
Keywords
Online Articles (118)