Vegetable production is an important economic activity and a major source of vitamins, minerals, and income in Ethiopia. However, the production of vegetables is much less developed than the production of food grains in the country. Vegetable production still needs improvement in combating biotic and abiotic threats with innovative technologies. Nowadays, excess use of chemical fertilizers to satisfy the increasing demand for food exerts deadly effects on soil microorganisms and contribute to the deterioration of soil fertility and an increase in atmospheric pollution. Several types of research are still going on to understand the diversity and importance of plant growth promoting rhizobacteria (PGPR) and their role in the betterment of vegetable production. PGPR facilitate plant growth directly by either assisting in the acquisition of nutrients (nitrogen, phosphorus, and other essential nutrients) or regulation of the levels of hormones. Indirectly PGPR decrease the inhibitory effects of various pathogens on vegetable growth and development in the forms of biocontrol agents. Some of the notable PGPR capable of facilitating the growth of vegetables such as potato, tomato, pepper, onion belong to genera of Pseudomonas, Bacillus, Azotobacter, Enterobacter, and Azospirillum. Hence, to optimize vegetable production with reduced input of mineral fertilizers and pesticides, the use of PGPR in vegetable cultivation is recommended.

中文翻译：

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植物生长促进根瘤菌在埃塞俄比亚可持续蔬菜生产中的作用

蔬菜生产是埃塞俄比亚的一项重要经济活动，也是维生素，矿物质和收入的主要来源。但是，该国蔬菜的生产远不如粮食谷物的发达。蔬菜生产仍需要通过创新技术来应对生物和非生物威胁。如今，过量使用化肥以满足对食品的日益增长的需求，对土壤微生物产生致命影响，并导致土壤肥力下降和大气污染加剧。仍在继续进行几种类型的研究，以了解促进根瘤菌（PGPR）的植物生长的多样性和重要性，以及它们在改善蔬菜生产中的作用。PGPR通过协助获取营养素（氮，磷和其他必需营养素）或调节激素水平，直接促进植物生长。PGPR间接以生物防治剂的形式降低了各种病原体对蔬菜生长和发育的抑制作用。能够促进蔬菜生长的一些著名PGPR，例如马铃薯，番茄，胡椒，洋葱，属于假单胞菌属，芽孢杆菌属，固氮菌属，肠杆菌属和固氮螺菌属。因此，为了在减少矿物肥料和农药投入的情况下优化蔬菜生产，建议在蔬菜栽培中使用PGPR。PGPR间接以生物防治剂的形式降低了各种病原体对蔬菜生长和发育的抑制作用。能够促进蔬菜生长的一些著名PGPR，例如马铃薯，番茄，胡椒，洋葱，属于假单胞菌属，芽孢杆菌属，固氮菌属，肠杆菌属和固氮螺菌属。因此，为了在减少矿物肥料和农药投入的情况下优化蔬菜生产，建议在蔬菜栽培中使用PGPR。PGPR间接以生物防治剂的形式降低了各种病原体对蔬菜生长和发育的抑制作用。能够促进蔬菜生长的一些著名PGPR，例如马铃薯，番茄，胡椒，洋葱，属于假单胞菌属，芽孢杆菌属，固氮菌属，肠杆菌属和固氮螺菌属。因此，为了在减少矿物肥料和农药投入的情况下优化蔬菜生产，建议在蔬菜栽培中使用PGPR。