A method for preventing and controlling melon bacterial fruit spot and its special seed fungicide

Abstract

The invention discloses a method for preventing and controlling bacterial fruit spot disease of melons and a special seed fungicide. The method is to soak the seeds with zinc pyrithione. Experiments have proved that zinc pyrithione can effectively remove the watermelon acidophilus outside and inside the seeds of cucurbit crops (such as watermelon and muskmelon), and can be absorbed by the seedlings during seed germination, reducing the watermelon acidophilus seed-seedling It can effectively inhibit the incidence of emergence of seeds carrying watermelon acidophilus, and achieve the purpose of preventing and controlling bacterial fruit spot of melons; at the same time, zinc pyrithione does not affect seed germination and seedling growth; zinc pyrithione also inhibits pathogenic bacteria (such as Tomato canker bacterium, cruciferous black rot fungus) growth, but also had no significant effect on the growth of plant growth-promoting rhizobacteria (such as Pseudomonas fluorescens, Bacillus subtilis). Zinc pyrithione can be used as a seed fungicide for production and promotion. The invention has important application value.

Description

technical field [0001] The invention belongs to the field of biotechnology, and in particular relates to a method for preventing and controlling bacterial fruit spot of melons and a special seed fungicide. Background technique [0002] Bacterial fruit blotch (BFB for short) of melons, also known as bacterial fruit rot, is a devastating disease that can cause production reduction or even failure of watermelons and melons, and is also a worldwide quarantine disease. BFB is caused by Acidovorax citrulli, which has the characteristics of rapid onset, rapid transmission, strong explosive power, and severe damage. Agricultural production safety poses a serious threat. Since the outbreak of melon bacterial fruit spot disease in watermelon fields in the United States in the 1990s, the disease has spread rapidly in many countries around the world in the past two decades, mainly due to the seed transmission of watermelon acidophilus and Related to the increasingly frequent internati...

AI Technical Summary

Problems solved by technology

The bacteria stored inside the seeds have high stress resistance, longer survival time, and stronger ability to spread diseases. At the same time, the bacteria stored inside the seeds make it difficult to detect and treat the seeds

At present, the seed transfer to prevent watermelon bacterial fruit spot is mainly through post-harvest fermentation and treatment of seeds with hydrochloric acid, Physan 20, Tsunami100, etc., but the treatment affects the germination rate, especially for triploid seedless watermelon seeds

Although the soaking of dry seeds in warm soup and treatment with copper preparations can reduce the incidence of seedling disease, they cannot completely remove pathogenic bacteria. Relying on agricultural antibiotics and copper preparations has limited effect on disease control at seedling stage, and it is easy to lead to the emergence of bacterial resistance

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