Natural organic compounds as alternative to methyl bromide for nematodes control |
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Authors: | Fawzia H Abdel-Rahman Shavon Clark Mahmoud A Saleh |
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Institution: | 1. Departments of Biology , Texas Southern University , Houston , TX;2. Departments of Chemistry , Texas Southern University , Houston , TX |
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Abstract: | Thirty-three organic acids and furfural metabolites were examined for their nematicidal activity against plant-parasitic, free-living and predacious nematodes. Propionic acid, 2-methylhexanoic acid, lactic acid, maleic acid, and furic acid were the most effective nematicides among normal chain organic acids, branched organic acids, hydroxy/keto-acids, dicarboxylic acids and furfural metabolites, respectively. Seven of the tested compounds were found to have more than 90% mortality thus designating them as highly active nematicides. Of the highly active tested compounds, an average octanol/water log P of 0.97 was observed with a range from 0.28 to 2.64, and a Henry's Law constant averaging 2.6 × 10? 7 atm.m3/mole. Tested chemicals with minor or low nematicidal activity showed an average log P of 1.76 with a range from 0.15 to 3.42 and a Henry's Law constant averaging 16.6 × 10? 7 atm.m3/mole. |
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Keywords: | Nematicides organic acids furfural fumigants pest control |
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