포화지방산 pelargonic acid와 caprylic acid에 의한 큰도꼬마리와 가지 생장억제효과

초록

Environmental concerns and regulatory pressures are driving the interest in naturally derived herbicides with low toxicity and high biodegradability. This study evaluated the herbicidal efficacy of two medium-chain saturated fatty acids, pelargonic acid and caprylic acid, against Xanthium orientale L. (cocklebur) and Solanum melongena L. (eggplant), and compared their performance with that of the synthetic herbicide glufosinate-ammonium. Representative comparisons were made between the plants treated with a 100-fold dilution of each fatty acid (0.1%) and those treated with the recommended glufosinate-ammonium concentration. Herbicidal activity was assessed 48 hours after treatment by measuring reductions in leaf width, chlorophyll content, visual desiccation, and electrolyte leakage. In X. orientale, pelargonic and caprylic acids reduced leaf width and chlorophyll content by 73–75% and 5558%, respectively, whereas glufosinate-ammonium caused significantly smaller reductions of 14.7% and 10.7%. Complete desiccation (100%) was observed with the fatty acids, compared to 18.3% for glufosinate-ammonium. In S. melongena, treatment with fatty acids resulted in a 60% reduction in leaf width and a 56% decrease in chlorophyll content, whereas glufosinate-Environmental concerns and regulatory pressures are driving the interest in naturally derived herbicides with low toxicity and high biodegradability. This study evaluated the herbicidal efficacy of two medium-chain saturated fatty acids, pelargonic acid and caprylic acid, against Xanthium orientale L. (cocklebur) and Solanum melongena L. (eggplant), and compared their performance with that of the synthetic herbicide glufosinate-ammonium. Representative comparisons were made between the plants treated with a 100-fold dilution of each fatty acid (0.1%) and those treated with the recommended glufosinate-ammonium concentration. Herbicidal activity was assessed 48 hours after treatment by measuring reductions in leaf width, chlorophyll content, visual desiccation, and electrolyte leakage. In X. orientale, pelargonic and caprylic acids reduced leaf width and chlorophyll content by 73–75% and 5558%, respectively, whereas glufosinate-ammonium caused significantly smaller reductions of 14.7% and 10.7%. Complete desiccation (100%) was observed with the fatty acids, compared to 18.3% for glufosinate-ammonium. In S. melongena, treatment with fatty acids resulted in a 60% reduction in leaf width and a 56% decrease in chlorophyll content, whereas glufosinate

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