Aphid pests are primarily consumed by locust larvae, leading to significant damage to tree trunks or even the death of plants. To reduce future infestations and minimize losses, it is crucial to combine winter pruning with the removal of overwintering pests. This integrated approach helps control their population effectively.
Beef Damage
There are three types: Sang Tianniu, Xing Tianniu, and Bianhong Neck Tianniu. These pests are typically 2 to 3 years old and attack the xylem and pith of trees. The outer bark remains intact, but there are regularly spaced fecal holes. The insect tunnels are straight, and red-brown excrement can be seen on the ground, resembling small cotton balls. To treat this, insert a mixture of 80% dichlorvos emulsifiable concentrate or 0.2 grams of aluminum phosphide into the last or second-to-last row of fecal holes. Then, seal all the holes with wet mud. Although aluminum phosphide is highly toxic, it is safe when used properly.
Giardia
This pest mainly affects apple and pear trees. It completes one life cycle in 1 to 2 years, damaging the outer skin, phloem, and cambium. The affected areas develop cracks, and red mucus oozes out, commonly referred to as "taking the red oil." The insect's tunnel spirals upward and is often filled with brown worms. To kill the larvae, mix 1 kg of kerosene with 0.1 kg of 80% dichlorvos emulsifiable concentrate and apply it directly to the infested area.
Pear Stem Bee
This pest has a one-year life cycle. Female adults lay eggs in the phloem of young shoots during mid-April. They use their serrated ovipositor to cut the upper part of the egg-laying site. The larvae overwinter in two-year-old branches. During winter pruning, remove broken shoots and focus on cutting three-year-old branches, then burn them together to eliminate the pests.
Grapevine Pest
This is a major threat to grapevines. The pest completes its life cycle in one year, with larvae boring into young shoots, affecting vine growth and fruit development. After feeding on the pith, the branches may swell and form tumors. During winter pruning, remove swollen stems and dispose of them properly. For thicker vines, apply 80% dichlorvos to the borings using cotton swabs to kill the larvae effectively.
By implementing these targeted management strategies, growers can significantly reduce the impact of these pests on their crops, ensuring healthier plants and better yields. Regular monitoring and timely intervention are key to long-term success in pest control.
Xylitol Gum,Xylitol For Teeth,Xylitol Sweetener,Xylitol Powder,Food Grade Xylitol
Qingdao Bailong Huichuang Bio-tech Co., Ltd. , https://www.sdblcycn.com