Aldicarb 10G on Greenhouse Chrysanthemums: Relationships Among Plant Age, Application Methods, and Residues in Foliage, Buds, and Flowers1

Abstract

Aldicarb 10G [2-methyl-2-(methylthio) propionaldehyde 0 (methyl-carbamoyl) oxime] was applied to 4, 8, and 12-week old potted chrysanthemums (Chrysanthemum morifolium Ramat) by applying granules directly to the soil, and by broadcasting granules over wet and dry foliage. Residues in upper and lower foliage, buds and flowers were measured at intervals following treatment. The results showed that residues in mature plants may not reach levels toxic to certain insect and mite pests regardless of application method; residues in upper leaves were highest, regardless of application method; and application to wet foliage resulted in highest residues initially, but which dissipated rapidly.