Latest Summary of Common Asparagus Pests and Diseases

Asparagus is a relatively common vegetable and is grown fairly widely in China, which is also the country that grows the most asparagus in the world. Some pest problems are unavoidable with asparagus. Next, let's take a look with Qinnong.net at which diseases are relatively common and how to deal with them when they occur.

1. Brown spot

Brown spot is a disease that causes relatively great harm to asparagus and is also a frequently occurring disease. The affected areas are mostly concentrated on the stems. When the disease occurs, brown spots first appear on the stems. In summer the color tends to be yellowish, while in winter it tends to be black. They then gradually spread and merge together, causing the entire plant to turn yellowish brown until it withers. 50% anilazine wettable powder at 500 times or 50% folpet at 800 times liquid both have good effects on the prevention and control of brown spot.

2. Stem rot

Stem rot mostly occurs on young shoots, mostly during the rainy season, and is often triggered by excessive humidity. In the early stage, water-soaked marks gradually appear on the young shoots. At this time, the part that has just emerged has actually already begun to rot, and white thread-like mold spots gradually appear on the emerged part. If not handled properly, it will infect the disease on a large scale. It is recommended to use 64% oxadixyl mancozeb wettable powder at 500 times liquid for prevention and control, and soil disinfection must be done well at the initial stage of planting.

3. Armyworms and other insects

The harm these insects cause to asparagus is relatively great as soon as they appear, and they are highly destructive pests. Their main target is the relatively tender parts, which they directly gnaw once found, and they mostly appear in summer. When these visible insects are found on asparagus, they must be dealt with promptly, otherwise they will seriously harm the growth and development of asparagus. 90% trichlorfon crystal at 1000 times liquid can be selected; this is currently a relatively effective pesticide for treatment.

4. Aphids and other parasitic pests

The severity of pests such as aphids is mostly concentrated in the later stage. In the early stage they mostly attach in relatively dark places and are hard to find without careful looking, and by the later stage they form large-scale effects. The symptoms are yellowing of the plants, and the affected plants grow noticeably slower than normal, so it is necessary to check shaded areas more. 25% jule mixture at 2000 times liquid is a pesticide that can relatively effectively suppress this type of pest. Weeds removed after the disease occurs should be promptly taken out of the planting area.

The above are some relatively common methods for preventing and controlling asparagus pests and diseases. For such diseases, do not hold the attitude that because only a small number have appeared, you can wait for the plants to recover on their own. This can easily lead to major economic losses later. Once discovered, do not take chances; deal with them directly.