Organic amendments are well known for influencing soil nematode community structure, diversities, and activities. Most of the previous studies focused on effects of organic amendments on plant-parasitic nematodes, but only a few investigated the effect of combination of biocontrol agents and organic amendments on soil nematodes. Different organic amendments (neem cake, poultry manure, and neem leaves) were combined with the predatory nematode, Fictor composticola, for the control of root-knot nematode, Meloidogyne incognita, in cucumber. Organic amendments were mixed in pots containing 1 kg soil, 15 days before sowing. Cucumber (cv. CCH-1) plants grown in these pots were inoculated by 2000 J2 of M. incognita and 400 F. composticola per pot, after 1 week of germination. Fictor composticola in combination with chicken manure + neem cake + neem leaves was found the best mixture for reducing the number of galls, egg masses, and final root-knot nematode population. The predator’s population reached the maximum in this treatment. All combinations of organic amendments in the presence of F. composticola were found significantly superior over inoculated check in reducing nematode’s population and in improving plant growth over the un-inoculated check. Data indicated the suitability of using the predatory nematode, F. composticola, and organic amendments for potential use in sustainable nematode management strategies.

中文翻译：

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整合了一些有机改良剂和捕食性线虫Fictor composticola，用于管理黄瓜根结线虫

众所周知，有机改良剂会影响土壤线虫的群落结构，多样性和活动。先前的大多数研究都集中于有机修饰剂对植物寄生线虫的影响，但是只有少数研究研究了生物防治剂和有机修饰剂组合对土壤线虫的影响。将不同的有机改良剂（印em饼，家禽粪便和印em叶）与掠食性线虫Fictor composticola结合使用，以控制黄瓜的根结线虫Meloidogyne incognita。播种前15天，将有机改良剂混入含有1千克土壤的盆中。发芽1周后，在这些盆中生长的黄瓜（cv。CCH-1）植物用2000 J2的隐身隐孢子虫和每盆400 F. composticola接种。将Fictor composticola与鸡粪+印cake饼+印leaves叶结合使用，发现是减少胆汁，卵重和最终根结线虫数量的最佳混合物。捕食者的数量在这种治疗中达到了最大值。发现在组成链镰刀菌存在下的所有有机修饰物组合在减少线虫种群和改善植物生长方面均比未接种对照明显优于接种对照。数据表明，使用掠食性线虫，组成性镰刀菌和有机改良剂可潜在地用于可持续的线虫管理策略。发现在组成链镰刀菌存在下的所有有机修饰物组合在减少线虫种群和改善植物生长方面均比未接种对照明显优于接种对照。数据表明，使用掠食性线虫，组成性镰刀菌和有机改良剂可潜在地用于可持续的线虫管理策略。发现在组成链镰刀菌存在下的所有有机修饰物组合在减少线虫种群和改善植物生长方面均比未接种对照明显优于接种对照。数据表明，使用掠食性线虫，组成性镰刀菌和有机改良剂可潜在地用于可持续的线虫管理策略。