How does applying microbial inoculants improve crop stress resistance?
In recent years, environmentally friendly and efficient microbial inoculants have attracted widespread attention in the industry, and the characteristics of applying microbial inoculants to improve crop resistance, avoid infection by various diseases, and ensure high yield and high quality are the issues that farmers care about most. Today Yezi will take everyone through the mechanism by which microorganisms improve crop resistance.
After beneficial microorganisms are inoculated into the soil, they multiply in large numbers at the crop roots and, for a period of time, become the dominant bacteria in the crop rhizosphere; in addition to their own effects, they can inhibit or reduce the reproduction and growth of pathogenic microorganisms.
Some microorganisms also have an antagonistic effect on pathogenic microorganisms. Most of the disease control by beneficial microorganisms should be attributed to their production of siderophores; siderophores are iron-containing molecular complexes synthesized by microorganisms, and they can limit the growth of harmful microorganisms.
On the one hand, after application of microbial inoculants, the microbial flora of the rhizosphere is changed; on the other hand, the colonization of microorganisms on the crop root surface and in the rhizosphere occupies the reproductive space of pathogenic microorganisms, indirectly reducing or lowering the occurrence of diseases and insect pests.
For some microorganisms, such as the hyphae of AM mycorrhizae, because they grow in large amounts at the crop roots, they can not only absorb nutrient elements beneficial to crop growth, but can also increase the crop's absorption of water and improve the crop's drought resistance.