NEMATICIDAL EFFICACY OF SUBSTITUTED PHENOLS, PHENOXYACETIC ACID ESTERS AND HYDRAZIDES: A STRUCTURE-ACTIVITY RELATIONSHIP STUDY BY MANGEL S. MALIK1), VIJAY PAL1), NARESH K. SANGWAN1), KULDIP SINGH DHINDSA1), K.K. VERMA2) and D. S. BHATTI2) 1) Department of Chemistry and Biochemistry; 2) Department of Nematology, Haryana Agricultural University, Hisar - 125 004, India The nematicidal activity of various substituted phenols, phenoxyacetic acid esters and hydrazides was determined against second stage juveniles of seed-gall nematode (Anguina tritici), root-knot nematode (Meloidogyne javanica) and pigeon-pea cyst-nematode (Heterodera cajani). The phenols with electron-donating substituents in general and chloro-substituent in particular and the corresponding substituted phenoxyacetic acid esters were found to show good nematicidal activity, while the hydrazides were largely inactive. Keywords: Phenols, phenoxyacetic acid esters, hydrazides, juvenile mortality, synthetic pro- ducts, nematicides, nematode control. The short-chain alkylating agents and cholinesterase inhibiting carbamates and organophosphates are much used in nematode pest control and little effort has been made to evaluate other classes of compounds (Feldmesser & Kochan- sky, 1983). Data on the relationship between chemical structure and nematicidal activity is also, therefore, scanty. Certain plants and their pro- ducts have recently been reported to possess good nematicidal activity (Chat- terjee et al., 1982; Evans et al.,
Nematologica – Brill
Published: Jan 1, 1989
Keywords: hydrazides; synthetic products; Phenols; juvenile mortality; phenoxyacetic acid esters; nematicides; nematode control
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