Limit=250 words To accurately estimate exposure of bees to pesticides, analytical methods are needed to enable quantification of ng/g (ppb) levels of contaminants in small samples of pollen or the individual insects. A modified QuEChERS extraction method coupled with ultra-high-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) analysis was tested to quantify residues of 1...

To accurately estimate exposure of bees to pesticides, analytical methods are needed to enable quantification of nanogram/gram (ng/g) levels of contaminants in small samples of pollen or the individual insects. A modified QuEChERS extraction method coupled with ultra-high-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) analysis was tested to quantify residues of 19 comm...

Efficacy of five water based insecticides on Schistocerca gregaria (Forskal), Locusta migratoria (Linnaeus),and multiple grasshoppers species applied as low volume (LV) and Ultralow (ULV) were tested. Obtained data indicated that descending order efficacy follow: chlorpyrifos, thiamethoxam + chlorantraniliprole, spinetoram methoxyfenozide, chlorantraniliprole then pyridalyl, in case S. both met...