WATER DISPERSION OF PYRETHROID AND THEIR USE

PURPOSE:To obtain the title composition most suitable for controlling insect pests in paddy fields, comprising specific very small granules containing a pyrethroid-based insecticide in a polyurethane-based coating film and a water-soluble polymer and diluting the composition with water to make surfa...

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Bibliographic Details
Main Authors TAKEDA, HISAMI, OOTSUBO, TOSHIRO, TSUDA, SIGENORI, TSUJI, KOZO, YAMAMOTO, HALUYASHI, MANABE, YUKIO
Format Patent
LanguageEnglish
Published 15.01.1999
Edition6
Subjects
AGRICULTURE
ANIMAL HUSBANDRY
BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES
FISHING
FORESTRY
HUMAN NECESSITIES
HUNTING
PEST REPELLANTS OR ATTRACTANTS
PLANT GROWTH REGULATORS
PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF
TRAPPING
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Summary:PURPOSE:To obtain the title composition most suitable for controlling insect pests in paddy fields, comprising specific very small granules containing a pyrethroid-based insecticide in a polyurethane-based coating film and a water-soluble polymer and diluting the composition with water to make surface tension >=a fixed value. CONSTITUTION:A pyrethroid-based insecticidal composition of water suspension type which comprises very small granules containing at least one pyrethroid- based insecticide in a polyurethane-based coating film and >=0.5% water-soluble polymer, uses very small granules having <=80mum average particle diameter and >=800 ratio of average particle diameter/thickness of coating film and has >=60 dyne/cm surface tension at 20 deg.C diluted with water by 50 times. Especially Lissorhoptrus oryzophilus is controlled by making surface tension 60 dyne/cm at 20 deg.C and concentration of pyrethroid-based insecticide 300-1,000 ppm. Phenomena of submergence of young seedling of rice plant after transplanting in paddy field is prevented.
Bibliography:Application Number: KR19900000750