What are the common pests and diseases in Amomum villosum cultivation
Amomum villosum is a plant that prefers a hot and humid environment, and it is precisely this characteristic that leads to its high disease incidence. Its diseases are mostly caused by pathogens, while pest problems are relatively fewer. So which diseases are common in Amomum villosum? Let Qinnong Network give you a brief introduction below.
1. Leaf spot disease
This is a relatively common condition of Amomum villosum, occurring mostly on the leaves and eventually causing the leaves to dry up. It is most likely to appear in Amomum villosum that is malnourished or poorly developed. Irregular pale yellow spots begin to appear on the leaf surface, concentrated along the leaf margins, and then slowly turn a rust-like color. Once this disease is found, severely affected leaves should be removed, and then 75% chlorothalonil wettable powder 700-fold solution should be sprayed for treatment; it is best to spray the surrounding area as well.
2. Damping-off disease
The onset time is concentrated in the seedling stage, mainly because pathogens enter the body of Amomum villosum through the roots. Since it is in the seedling stage and has poor resistance, it cannot withstand the harm of the pathogens and becomes diseased. The relatively common symptom is that the roots or young shoots begin to rot, and some roots also develop white mold threads. After discovery, 1000-fold amobam solution can be sprayed for treatment, for a period of one month, preferably once a week.
3. Stem blight
The affected area of this disease is concentrated in the rhizome area, and it can also occur on some fruits. The symptom is the appearance of brown spots at the affected site, which then slowly dry-rot, and in the later severe stage the affected site begins to rot. Stem blight is especially likely to occur in hot and humid environments, so the prevention of this disease in Amomum villosum should be given particular attention. When the disease occurs, 38% oxadixyl-azoxystrobin 800-fold solution or agents with similar efficacy can be sprayed.
4. Stem borer
The stem borer is a parasitic pest that is very difficult to detect and directly affects the overall growth of the plant. It occurs mostly in the seedling stage. At this time, stem borer eggs are laid on the seedlings, and after hatching, due to nutritional needs, they bore into the stems of Amomum villosum. In the early stage, because the nutritional demand is not great, the symptoms are not obvious; later, as they grow larger, they eventually bore out from inside the plant. If slow plant growth is noticed, some diflubenzuron No. 3 suspension concentrate 100 can be sprayed for control.
The above are some common pests and diseases of Amomum villosum. In daily management, everyone must take good prevention and control measures. In addition, the environment in which Amomum villosum grows is itself relatively hot and humid, so the disease incidence is higher. When planting in the early period, all aspects of prevention and control must be done well.