Root-knot nematode species, host plants and sensitivity to commonly-used nematicides in Shandong Province Bioactivity of avermectins to Chilo suppressalis Walker and Cnaphalocrocis medinalis Guenée and the influence to natural enemies in the paddy fields Quantitative Determination of Avermectins Residue in Polygonatum sibiricum SCREENING TESTS AND PRELIMINARY STUDY ON THE INSECTICIDAL ANTIBIOTICS AND THEIR EFFECT IN CONTROLLING HELICOVERPA ARMIGERA AN ENZYME-LINKED IMMUNOSORBENT ASSAY (ELISA) FOR AVERMECTIN B_1 RESIDUE IN PEARS The toxicity of avermectin series to diamondback moth Plutella xylostella(L.)under different temperature scales and ultraviolet light TOXICITY CHARACTERISTICS OF AVERMECTINS TO COTTON BOLLWORM AND ITS EFFECTS ON THE TOXICITY OF OTHER INSECTICIDES Effects of avermectin B1a on soil microorganism and earthworm(Eisenia fetida) Detoxification enzymes activities in two color morphs of pea aphid (Acyrthosiphon pisum) treated with different sub-lethal concentrations of avermectin