1 leaf spot
This is a common disease of Amomum villosum, which mostly occurs on leaves and eventually leads to leaf dryness. Generally, malnourished or stunted Amomum villosum is the most likely to appear, appearing on leaves, and some irregular pale yellow spots begin to appear on the surface, which are concentrated at the edge of leaves and then slowly turn into rust color. Once the disease is found, the serious leaves should be removed, and then 700 times of 75% chlorothalonil wettable powder should be sprayed for treatment, preferably spraying the surrounding leaves.
2. Rhizoctonia solani
The onset time is concentrated in the seedling stage, and the main pathogen enters Amomum villosum through the root system. Because the resistance at seedling stage is poor, it may not be able to resist the harm of pathogenic bacteria. The common manifestation is that roots or buds begin to rot, and some roots may also appear white mold. After discovery, it can be treated with 1000 times mancozeb water for one month, preferably once a week.
3. Stem blight
This lesion is concentrated in roots and some fruits. It will turn into brown spots on the affected area and then slowly dry. When the condition is serious in the later stage, the diseased part begins to rot. Stem blight is particularly prone to occur in hot and humid environment, so Amomum villosum should pay special attention to prevention. At onset, 38%_ propiconazole 800 times solution or similar drugs can be sprayed.
4. bugs
Borehole worm is a kind of parasite that is difficult to find, and it will directly affect the growth of the whole plant. Most of them occur at seedling stage, when the eggs of heartworm are laid on seedlings. After birth, due to nutritional needs, they drill into the stems of Amomum villosum. Because of the lack of nutrition in the early stage, the performance was not obvious, and later it grew bigger and bigger, and finally it emerged from the plant. It was found that the slow-growing plants could be controlled by spraying some diflubenzuron 3 suspension concentrate 100.
These are some common diseases and insect pests of Amomum villosum. We must take preventive measures in our daily life. In addition, the initial growth environment of Amomum villosum is hot and humid in time, and the incidence rate is high. Therefore, when everyone is planting in the early stage, all aspects of prevention and control must be in place.
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