Suong-Be Hyeon

The nematicidal activity of acetylene compounds.

In the light of these studies, we have studied the structure-activity relationship of acetylenes to find more potent nematicides. In the previous paper we preliminarily reported that 1 ,4diphenyll ,3-butadiyne showed strong nematicidal activity, whereas 4-pentynoic acid, trans2-pentene-4-ynol and 3-butynoic acid were completely inactive, suggesting that the presence of systems conjugated to a diyne system played a role in nematicidal activity.1} Following this study, it has recently been found that R1-C=C-R2 compounds, where

A Rapid and Simple Method for Assay of Nematicidal Activity and Its Application to Measuring the Activities of Dicarboxylic Esters

A rapid and simple method for assaying nematicidal activity was devised. This method is based on living nematodes descending through Japanese paper. Among dicarboxylic esters tested against a root lesion nematode Prathylenchus coffeae, di-n-propyl, di-n-butyl and di-n-amyl succinates, and di-n-butyl esters derived from dicarboxylic acids showed marked nematicidal activities.