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Le 01/10/2006, 00:00:00 > Articles
Qu’est-ce que le spinosad ? insecticide polyvalent
Issu de la recherche de Dow AgroSciences, le spinosad, première substance active de la famille des spinosoïdes, possède un nouveau mode d’action biochimique. Cet insecticide d’origine biologique est produit par un procédé original de fermentation. Il a un large champ d’activité contre les ravageurs de nombreuses cultures et appartenant à plusieurs ordres : lépidoptères, thysanoptères, diptères, hyménoptères et certains coléoptères. Active par contact et surtout par ingestion, la molécule est un larvicide très efficace mais agit aussi sur les adultes et, selon les espèces, sur les ufs. Discovered and developed by Dow AgroSciences, spinosad is the first active substance from the spinosoïd (or spinosyn) family that delivers a new unique biochemical mode of action. On numerous crops it will control insect pests from various orders such as Thysanoptera, Lepidoptera, Diptera, Hymenoptera and to some extent, Coleoptera. The Actinomycetae soil bacterium Saccharopolyspora spinosa produces the two equally active metabolites spinosyn A and spinosyn D that compose the active substance spinosad. Manufacturing is via fermentation. Spinosad acts by contact and mainly by ingestion therefore being very efficacious against larvae but also against adults and for some species also on eggs. Spinosad combines rapid knockdown and residual control of pests in vines, pome or peach orchards. It is efficacious on a wide range of insect pests such as Sparganothis pilleriana, grape berry moths, thrips and Drosophila sp. in vines, codling moth and other fruit tortricid moths (Pandemis, Argyrotaenia, Adoxophyes sp.) in apple or pear orchards, thrips, oriental fruit moth and peach twig borer in peaches. Spinosad shows a very selective profile relatively to the beneficial insects present in vines or orchards such as Coleoptera (ladybirds ), Heteroptera (Anthocoridae), Neuroptera (lacewings ), Diptera (hoverflies, Cecidomyidae ) as well as to predatory mites (Typhlodromus pyri ). The new phytopharmaceutical product Success 4 containing 480 g/l of spinosad (SC) offers a new alternative control tool that can be included in an integrated pest management spray program.
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