SAM Electrochemical Immunosensor in Determination of Methyl Parathion PRELIMINARY STUDY ON A NOVEL PIEZOELECTRIC IMMUNOSENSORS FOR DETECTION OF METHYL PARATHION Use of methyl parathion (MP)-degrading strain DLL-E4(Pseudomonas sp) to remove MP residue on the surface of agricultural products Effect of organophosphorous insecticides on Chinese chive insect pests and their degradation by pesticide-degrading bacterium Degradation of methyl parathion in soil and Chinese chive by strain DLL-1