The Latest Comprehensive Rundown of Common Pests and Diseases of Amomum
Amomum is a plant that relatively prefers hot and humid environments, and it is precisely this characteristic that leads to its high disease incidence rate; the diseases are mostly caused by pathogens, while insect pests are relatively fewer. So which diseases are common in Amomum? Let Qinnong Net give everyone a brief introduction below.
1. Leaf spot
This is a relatively common Amomum disease, mostly occurring on the leaves and ultimately causing the leaves to dry up. It is most likely to appear in Amomum that is malnourished or poorly developed. Irregular pale yellow spots begin to appear on the leaf surface, concentrated at the leaf edges, 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
The onset time is concentrated in the seedling stage, mainly because pathogens enter the body of Amomum through the roots; because it is in the seedling stage, its resistance is poor, and it cannot withstand the harm of the pathogens, so disease occurs. The relatively common manifestation is that the roots or young shoots begin to rot, and some roots also develop white mold threads. After discovery, it can be treated by spraying 1000-fold amobam solution, for a period of one month, preferably once a week.
3. Stem blight
The affected area is concentrated in the rhizome part, and some fruits can also be affected. The manifestation of the disease is brown spots appearing at the affected site, which 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 Amomum growers must pay particular attention to preventing this disease. When it occurs, 38% oxadixyl-azoxystrobin 800-fold solution or a similar agent can be sprayed.
4. Stem borer
The stem borer is a parasitic pest that is very difficult to detect and directly affects the growth of the whole plant. It mostly occurs in the seedling stage; at this time the stem borer eggs are laid on the seedlings, and after hatching, due to nutritional needs, they bore into the stems of Amomum. In the early stage, because the nutrients required are not much, the symptoms are not obvious, and later, as they grow larger and larger, they finally bore out from inside the plant. In daily practice, if slow plant growth is found, some 100-fold chlorbenzuron No. 3 suspension concentrate can be sprayed for control.
The above are some common pests and diseases of Amomum. In daily life, everyone must do a good job of prevention and control measures. In addition, the environment in which Amomum originally grows is relatively hot and humid, so the disease incidence rate is higher, and everyone must ensure that all aspects of prevention and control are in place during the early stages of planting.