TOXICITY OF β -KETOESTERS AND β -DICARBONYL COMPOUNDS TO JUVENILES OF THE SEED-GALL NEMATODE ANGUINA TRITICI BY MANGEL S. MALIK, O. P. MALIK and NARESH K. SANGWAN Department of Chemistry and Biochemistry, CCS Haryana Agricultural University, Hisar-125 004, India Survival of juveniles of the seed-gall nematode, Anguina tritici, was used to assess the nematicidal efficacy of various substituted β -ketoesters and β -dicarbonyt compounds. In gen- eral, β -dicarbonyl compounds were more active than β -ketoesters. The activity of the esters and ketones was increased by introducing chloro, bromo, acetoxy or aryl groups at α - and β -positions. Some of the compounds have comparable activity to that of the commercial nematicide, aldicarb. Keywords: aldicarb, chemical structure, juvenile mortality, nematicide, nematode control. Several kinds of compounds, either isolated from plants or synthesised in the laboratory have been reported to possess nematicidal properties (Chatterjee et al., 1982; Evans et al., 1984; Gommers, 1981; Sangwan et al., 1985; Mori et al., 1982). In many cases, the active nematicidal constituent has been found to be an ester (Mori et al., 1982; Hayashi et al., 1983; Malik et al., 1989; Kawazu et al., 1980). In this paper we report the results of
Nematologica – Brill
Published: Jan 1, 1997
Keywords: nematicide; aldicarb; juvenile mortality; nematode control; chemical structure
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