Eggplant (Solanum melongena) is one of the most popular vegetable crops in Egypt. It is affected by a wide range of pests; prominent among them is root-knot nematode (RKN) Meloidogyne spp. which constitutes a major group of plant-parasitic nematodes causing great economic losses worldwide especially in Egypt. The present investigation was performed under greenhouse conditions to evaluate the potentials of 3 growth-promoting bacteria, Azospirilum brasilense, Azotobacter chroococcum, and Bacillus subtilis, as well as chitosan for the control of the nematode Meloidogyne incognita causes root-knot disease of eggplant cv. Baladi. All treatments reduced (p ≤ 0.05) the nematode population in soil and roots as well as enhanced the plant growth parameters of eggplant remarkably than the control. The applied treatments varied in their efficacy against the plant nematode infection in correspondence to the time of application. The recorded results demonstrated that maximum reduction in J2 in soil, egg mass/root, and eggs/egg masses were obtained by treating the soil with Bacillus subtilis followed by Azospirilum brasilense and Azotobacter chroococcum. Also, chitosan resulted in high reduction in root galls compared to control treatment. The use of plant growth-promoting rhizobacteria, Azospirilum brasilense, Azotobacter chroococcum, Bacillus subtilis, and chitosan achieved efficient control to Meloidogyne incognita and consequently increase eggplant growth parameters under greenhouse conditions. The present results suggested introducing such rhizobacteria in integrated nematode management program.

中文翻译：

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的管理根结线虫南方根结线虫使用温室条件下一些生长促进根际细菌和脱乙酰壳多糖的茄子

茄子（Solanum melongena）是埃及最受欢迎的蔬菜作物之一。它受到多种害虫的影响；其中最突出的是根结线虫（RKN）根结线虫。它构成了主要的植物寄生线虫类，在世界范围内造成了巨大的经济损失，尤其是在埃及。本研究是在温室条件下进行的，以评估3种促进生长的细菌，巴西固氮螺菌，嗜蓝固氮菌和枯草芽孢杆菌以及壳聚糖对控制线虫根结线虫导致茄子根结病的潜力。巴拉迪 与对照相比，所有处理均显着降低了土壤和根系中的线虫数量（p≤0.05），并显着提高了茄子的植物生长参数。所施用的处理剂针对植物线虫感染的功效随施用时间的不同而变化。记录的结果表明，通过用枯草芽孢杆菌，巴西细孢螺旋藻和嗜蓝固氮菌处理土壤，可最大程度地减少土壤中J2的含量，鸡蛋的质量/根和鸡蛋/的鸡蛋质量。同样，与对照处理相比，壳聚糖导致根胆的大量减少。使用促进植物生长的根际细菌，巴西偶氮螺旋杆菌，嗜铬固氮菌，枯草芽孢杆菌和壳聚糖，可以有效地控制根结线虫，从而在温室条件下增加茄子的生长参数。目前的结果建议在综合线虫管理程序中引入这种根瘤菌。