Maize Rotation Combined with Streptomyces rochei D74 to Eliminate Orobanche cumana Seed Bank in the Farmland

Orobanche cumama wallr. is the sunflower root parasitic weed with special life stage in which seed germination and parasitism take place soil. In practice, applying microbial agents trapping crop rotation are utilized separately, or just one of them selected to control O. cumana. The development industry severely constrained on farmland, where there high density cumana’s banks. this study, two biological methods were combined solve problem cumana parasitism. bioassay experiment showed that concentration fermentation filtrates Streptomyces rochei D74 could effectively inhibit growth germ tube seeds. As was increased 3.1 mg/mL, almost unable sprout. A two-year pot revealed use sunflower–maize–sunflower together promoted growth, as shown by biomass accumulation, plant height, denser systems. method resulted a significant decrease number parasitism, compared alone. Additionally, it affected bacterial community composition rhizosphere, mostly leading an increase Brevibacterium Arthrobacter. This experiment, multiple control, means significantly reducing cumana, provides effective foundation for practical application.