The Insecticide Toxicity and Repelling Ability of Jeruk Purut (Citrus hystrix D.C) Leaf Extract on Maize Weevil (Sitophilus zeamais Motsch)

JURNAL AGRONIDA Pub Date : 2019-07-18 DOI:10.30997/JAG.V5I1.1849

A. Wulansari, N. Rochman, Setyono Setyono

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引用次数: 1

Abstract

Sitophilus zeamais Motsch. is a primary storage insect pest damaging maize grains. Control of S. zeamais can be done by applying biopesticide. This study was aimed at assessing the ability of Jeruk Purut leaf extract, as biopesticide, to kill and repel Sitophilus zeamais Motsch. The study was conducted at Entomology Laboratory, Seameo Biotrop in March to August 2018. A completely randomized design with three replicates in each rate of Jeruk Purut leaf extract was used. In preliminary pesticide toxicity experiment, five rates of Jeruk Purut leaf extract, namely 0%, 2%, 4%, 6%, and 8% were applied. In preliminary repelling ability experiment, five rates of Jeruk Purut leaf extract, namely 1%, 2%, 4%, 6%, and 8% were applied. In the main pesticide toxicity and repelling ability trial, five rates of Jeruk Purut leaf extract, namely 3%, 6%, 9%, 12%, and 15% were applied. Results showed that in 24 hour after treating (HAT) no significant effects were found. Significant effects of Jeruk Purut leaf extract as insecticide on S. zeamais were found in 48 and 72 HAT. The highest mortality rate (82.2%) of S. zeamais was found in 15% rate of Jeruk Purut leaf extract in 72 HAT. The application of Jeruk Purut leaf extract was not found to give significant effects on repelling S. zeamais in 24, 48, and 72 HAT as indicated in their sharply fluctuating repellent values. The highest repelling ability (95%) was found in the application of 9% Jeruk Purut leaf extract in 24 HAT. It was concluded that Jeruk Purut leaf extract was more potential as insecticide repellent for Sitophilus zeamais Motsch. Key words: biopesticide, repellent, insecticide, maize, primary storage insect pest

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柑桔叶提取物对玉米象甲的杀虫毒性及驱避能力

玉米象。是危害玉米籽粒的主要贮藏害虫。玉米玉米瘟可以通过施用生物农药来控制。摘要本研究旨在评价菊芋叶提取物作为生物农药对玉米象虫的杀灭和驱避作用。该研究于2018年3月至8月在Seameo Biotrop昆虫学实验室进行。试验采用完全随机设计，每个配比下设3个重复。在初步农药毒性试验中，分别施用0%、2%、4%、6%、8% 5种浓度的紫果叶提取物。在初步驱避能力试验中，分别采用1%、2%、4%、6%、8% 5种浓度的槟榔叶提取物。在主农药毒性和驱避力试验中，分别采用3%、6%、9%、12%和15% 5种不同浓度的紫果叶提取物。结果显示，治疗后24小时无明显疗效。辣椒叶提取物对玉米玉米螟的杀虫效果显著。在72个品种中，玉米玉米螟的死亡率最高，为82.2%。在24、48和72个HAT试验中，辣椒叶提取物的驱避效果不显著，这表明它们的驱避值波动剧烈。在24个试验中，施用9%菊芋叶提取物的驱虫率最高(95%)。结果表明，菊芋叶提取物具有较好的驱避效果。关键词:生物农药;驱避剂;杀虫剂

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JURNAL AGRONIDA

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