Sevin as a Systemic Miticide for the Pear Leaf Blister Mite, Eriophyes pyri (Pgst.) (Acarina: Eriophyidae)

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Abstract
Sevin (1-naphthyl N-methylcarbamate) was first shown to have miticidal properties in 1957 when Allen et al. (1) found that it was moderately effective for the control oi the cyclamen mite, Steneotarsonmus pallidus (Banks), on strawberries. Subsequently it was demonstrated that Sevin would control the northern fowl mite, Ornithonyssus sylviarum (C. and F.) (7, 8, 9), suppress the brown mite, Bryobia arborea M. and A. (18), and the peach silver mite, Vasates cornutus (Banks) (18), and practically eliminate the predacious mite, Typhlodromus rhenanus Oudms. (18). It is not toxic to the European red mite, Panonychus ulmi (Koch) (18), the desert spider mite, Tetranychus desertorum Banks (4), and the two-spotted spider mite, Tetranychus telarius (L.) (6, 15); usually the use of Sevin for insect control will increase the numbers of these mites, and in this respect its effect is similar to that of DDT.