Comparison of the impact of a neem seed‐kernel extract formulation, “Margosan‐O” and chlorpyrifos on non‐target invertebrates inhabiting turf grass
1992; Wiley; Volume: 36; Issue: 3 Linguagem: Inglês
10.1002/ps.2780360317
ISSN1096-9063
Autores Tópico(s)Insect Resistance and Genetics
ResumoAbstract Several laboratory studies have indicated that neem seed‐kernel extracts, or the neem insecticide azadirachtin, are active against certain types of pestiferous insects but do not harm several types of beneficial arthropods. The abundance of several groups of invertebrates inhabiting a turf grass ecosystem was determined in 1991 after application of a neem‐based insecticide formulation, “Margosan‐O®” (MO; W. R. Grace & Co., Columbia, Maryland, USA) containing 3.0 g litre −1 azadirachtin, and chlorpyrifos. MO was less detrimental than chlorpyrifos to most of the invertebrates studied. However, oribatid mites were more sensitive to MO than to chlorpyrifos. Sminthurid and non‐sminthurid collembola were also susceptible to MO, although less so than to chlorpyrifos. MO had no significant effect on non‐oribatid mites and spiders. Environmental implications of using selective versus broad‐spectrum insecticides in agriculture are discussed.
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