Biological microbial agent for preventing and treating strawberry root rot bacteria

Abstract

The invention relates to a microbial agent for preventing and treating strawberry root rot. The microbial agent comprises a Pseudomonas oryzihabitans bacterial solution and a synergist, wherein Pseudomonas oryzihabitans is collected by the General Microorganisms Center of China Committee for Culture Collection of Microorganisms, which is located at Institute of Microbiology, Chinese Academy of Sciences, 3#, 1# Courtyard, Beichen West Road, Chaoyang District, Beijing, on January 29, 2018 and has the collection number of CGMCC No. 15325; and the synergist is a 4,000-5,000-solution mixed solutionof chlorothalonil and Hymexazol. The bacterial fertilizer has good colonization capability at rhizosphere of strawberries, is safe and reliable and plays a good role in degrading root rot pathogenicbacteria in continuous cropping strawberry soil, so that the physicochemical properties of the soil are obviously improved, the stress resistance of strawberry plants is promoted, and the yield and fruit quality of strawberries are improved.

Description

technical field [0001] The invention relates to the field of biological control, in particular to a biological bacterial agent for controlling strawberry root rot. Background technique [0002] Strawberry root rot mainly damages the root system. When the onset starts from small lateral roots or new roots, irregular light red and brown plaques appear at first, and the color gradually darkens to dark brown. As the disease develops, all roots rapidly become necrotic and brown. The aboveground part is that the outer leaf margins turn yellow, brown, necrotic, and shrink. The diseased plant shows a lack of water, and gradually develops towards the center until the whole plant is yellow and dead. The root system of strawberry root rot is shorter and darker than that of healthy plants, and the adventitious roots in the underground part die in large numbers, and the new roots are attacked by pathogenic bacteria and grow sparsely. The roots are damaged, the absorption capacity decre...

AI Technical Summary

Problems solved by technology

[0004] For strawberry farmers, during the 3-4 years of strawberry picking, frequent crop rotation will lead to lower economic benefits, and the method of fertilization will easily cause adverse consequences such as injury to seedlings, and single chemical control will cause drug resistance and strawberry quality decline