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Quantitative Structure Activity Relationship for Nematicidal Activity of O, O-Diaryl O-Methyl Phosphorothionates# Gupta R.L., Prasad D.1 Division of Agricultural Chemicals, I.A.R.I, New Delhi-110012, India 1Division of Neonatology, I.A.R.I, New Delhi-110012, India # Contribution No. 790. Abstract The relationship between the structure of a series of O, O-diaryl O-methyl phosphorothionates and their nematicidal activity against Meloidogyne incognita was analysed using physico-chemical parameters of the molecules by means of multiple regression analysis. The electronic effect of the ortho substituents in the benzene ring expressed as Swain-Lupton constant (F) along with Hammert constant (a) has a major contribution in determining the nematicidal activity of the compounds in this series. Top Keywords Nematicide, Phosphorthionate, QSAR. Top | |
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