Yellow ginger root rot control summary
In recent years, the economic benefits of yellow ginger planting have been significant, and the development momentum has been rapid. Especially in recent years, large areas have been converted from wild to centralized planting, and diseases and pests have become increasingly prominent. The diseases that have been seen so far are mainly root rot, anthrax, and epidemics. The insect pests are mainly harmful to underground pests such as beetles and ground tigers. The pests on the leaf surface are easy to control and cause less harm. Weeds also restrict the cultivation of yellow ginger. Jiang Nong devoted greater damage to the population.
Now we introduce the prevention and treatment of root rot as follows:
Root rot caused by Fusarium infestation. The diseased part is usually at the junction of roots and vines. The diseased part turns dark brown and slightly sinks. Sometimes it cracks and penetrates into the cortex. The root of the main vine is completely rotted and the whole plant withers. In the dead, wet environment, the diseased part produced pink mouldy material. The pathogen can survive for a long time in the diseased body and soil. The environment is suitable for producing spores, and it is backsplashed by rainwater and water to invade the wound.
Prevention and control should be done:
(1) Remove the diseased body in time, and the farmyard manure should be fermented and fermented.
(2) Seed treatment: Before sowing, soaking for 20 minutes with 500 times liquid of 20% bronchobacillus sp.
(3) Soil treatment: After the sowing ditch is well opened, fill in the farmyard fertilizer, and then press the mu with 2-3 kilograms of dexamethasone or 3 kilograms of anti-wilting mildew fertilizer to mix the appropriate fine soil in the farm soil, and kill the soil fertilizer. The pathogens reduce the number of pathogens and reduce the occurrence of diseases in later stages.
(4) Control during the growth period: In the disease occurrence period, the roots were irrigated with 500-700 times of 20% bronchobacillus (Thiococcus), and the interval was 7-10 days, and the drug was stopped when the frost fell.
(Extracted from the training class for the Bureau of Agriculture in Shiyan City, Hubei Province)
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