Anthracnose is a common disease in the process of banana planting. Its disease is harmful. It not only harms the fruit but also damages the leaves. If the control is not timely, it will cause the banana plants to die. Therefore, you need to prevent and control as early as possible during the planting process. The following is about bananas. You can refer to the occurrence rules and prevention methods of "anthrax disease".
Harmful symptoms
Mainly for immature or mature fruit, but also for flowers, leaves, spindles and bananas. Some of the fragrant cokes are infected, the fruit surface is scattered brown to black and red spots, does not expand, but spread to the depths of the flesh to cause decay, giving off an aromatic smell.
Law of onset
Under natural conditions, the pathogens only produce asexual stages. The conidia are long-elliptical, colorless and monosporous, and pink when gathered together. The optimum growth temperature of banana anthracnose is 25-30 °C, and the optimum temperature for disease development is 32 °C. The pathogen can be infested in the field during the green period, but it is invaded by the attached spores and lurks in the dormant state on the green fruit, and the symptoms are only displayed after the fruit is matured and harvested. Among the bananas, the banana is the most serious, the plantain is the second, the Saigon banana is the lightest, and the banana garden with poor drainage and rainy fog is also vulnerable.
Control method
First, select high-yield, high-quality disease-resistant varieties, strengthen water and fertilizer management, enhance plant growth, and improve disease resistance.
Second, timely removal and burning of diseased flowers, disease axes and diseased fruit, and bagging at the beginning of the results, can reduce the infection of bacteria.
Third, picking fruit at the right time. The local sales control is mature in nine, and the export should be harvested at the maturity of 7-8, picking the fruit for sunny days, paying attention to reducing the wound.
Fourth, do a good job in the packaging room, storage and transportation of the sanitation, and spray 5% Jialong liquid or sulfur fumes for 24 hours for disinfection (2 ~ 2.5kg per 100m3 of sulfur, sealed after 1 day and night.
Medication reference
60% methyl sulfide · iprodione wettable powder (low toxicity) using 40-60 g / ag spray
70% Mi Xian·Binson Zinc Wettable Powder (Low Toxic) Use 90-120 g/mu spray
25% minos and carbendazim WP (low toxicity) using 75-100 g/mu spray
40% nitrile water dispersible granules (low toxicity) spray with 4000-4800 times
46% copper hydroxide water dispersible granules (low toxicity) using a dilution of 1500-2000 times spray
75% sputum · tebuconazole water dispersible granules (low toxicity) using 10-15 g / mu spray
60% azole ether·Dyson water dispersible granules (low toxicity) Spray with 1000-2000 times
2%, 4% pyrimidine nucleoside antibiotic liquid (low toxicity) use 1) 500-600 ml / mu, 2) 250 - spray
30% silazole · prochloraz aqueous emulsion (low toxicity) using 1500-2000 times liquid spray
20% benzophenone promethamine microemulsion (low toxicity) spray with 1000-2000 times solution
Banana "anthrax" has an important impact on the yield and quality of bananas. If you want to grow bananas with high yield, you need to pay attention to prevention and control during the planting process. The above is a detailed prevention and treatment method, don't miss it.
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