Department of Plant Protection, Shandong Agricultural University, Tai'an, Shandong, PR China.
Pest Manag Sci. 2012 Jun;68(6):853-7. doi: 10.1002/ps.2338. Epub 2012 Mar 6.
Tomato growers in Shandong Province, China, commonly face heavy root-knot nematode infestations. Current methods of control include cadusafos and methyl bromide (MeBr), but alternative methods are required because of the high toxicity of these pesticides and the ecological risk of their use. Therefore, abamectin soil applications were evaluated for their potential to control soil nematodes in a series of laboratory tests, greenhouse pot experiments and field trials.
Laboratory tests showed that abamectin exhibited rapid knockdown of Meloidogyne incognita, with LC(50) and LC(90) values that were superior to those of cadusafos and averaged 7.06 and 21.81 mg L(-1). In the greenhouse pot experiment, soil applications of abamectin provided significant M. incognita control similar to that provided by cadusafos while maintaining excellent plant height and vigour. In the field trials, abamectin exhibited excellent control effects to nematodes while giving a higher tomato yield. There was a 19.3-39.0% yield increase from the various treatments compared with the control, and the best results were obtained from the highest dose of abamectin.
The results of this study demonstrated that abamectin has the potential to be used as an effective alternative to MeBr and cadusafos for nematode control in tomato production in Shandong Province.
中国山东省的番茄种植者普遍面临严重的根结线虫侵染。目前的控制方法包括克百威和甲基溴（MeBr），但由于这些农药毒性高，使用存在生态风险，因此需要替代方法。因此，阿维菌素土壤施药在一系列实验室试验、温室盆栽试验和田间试验中被评估其控制土壤线虫的潜力。
实验室试验表明，阿维菌素对线虫有快速击倒作用，其 LC（50）和 LC（90）值优于克百威，平均为 7.06 和 21.81mg/L。在温室盆栽试验中，阿维菌素土壤施药对 M. incognita 的防治效果与克百威相似，同时保持了极好的植物高度和活力。在田间试验中，阿维菌素对线虫表现出极好的防治效果，同时番茄产量更高。与对照相比，各种处理的产量增加了 19.3-39.0%，最高剂量的阿维菌素效果最好。
本研究结果表明，阿维菌素有可能替代 MeBr 和克百威，成为山东省番茄生产中防治线虫的有效方法。
