The Latest Methods and Technical Key Points for Pest and Disease Control in Bupleurum

Bupleurum is a perennial herbaceous plant, originally wild; in recent years, due to harvesting, the medicinal source has become insufficient, so the wild plant has been cultivated at home. When planting, attention should be paid to pest and disease control in Bupleurum. Let's take a look together below!

Rust

[Damage characteristics]Rust is caused by fungi and damages the leaves. The back of the diseased leaf is slightly raised, and later ruptures to release orange-yellow spores.

[Control method]After harvesting, clean the garden and burn the debris. In the early stage of the disease, spray 50% dinitro dispersible powder at 200 times dilution or enemy rust steel at 400 times dilution, once every 10 days, for 2 to 3 consecutive times.

Root rot

[Damage characteristics]Root rot mainly damages the roots of Bupleurum, causing rot, wilting and death.

[Control method]Clean the field sanitation, burn diseased plants, plant on high ridges, pay attention to drainage, disinfect the soil, remove diseased plants, and disinfect the planting holes with lime.

Leaf spot

[Damage characteristics]It occurs during the rainy season, mostly infecting from leaf margins and leaf tips. The lesions grow from small to large in irregular shapes, red-brown to gray-brown. The lesions merge into large blighted spots, with the dried area reaching 1/3-1/2 of the leaf. There is a band around the edge of the lesion that is deeper than the lesion itself, and the boundary between diseased and healthy tissue is obvious. Later, some small black grains appear on the lesions.

[Control method]Spray with 1:1:100 Bordeaux mixture for control.

Yellow swallowtail butterfly

[Damage characteristics]The yellow swallowtail butterfly belongs to the family Papilionidae of the order Lepidoptera. It occurs and causes damage from June to September. The larvae damage leaves and flower buds, eating them into notches or leaving only the flower stalks.

[Control method]Handpick and kill them, or use 90% trichlorfon at 800 times dilution, spraying once every 5 to 7 days, for 2 to 3 consecutive times. Spraying with Qingchongjun (containing 10 billion spores per gram) at 300 times dilution also gives very good results.

Red-striped stink bug

[Damage characteristics]The red-striped stink bug belongs to the family Tessaratomidae of the order Hemiptera. It occurs and causes damage from June to August. Adults and nymphs suck sap, causing poor plant growth.

[Control method]Handpick and kill them, or spray and kill with 90% trichlorfon at 800 times dilution.