Kiwi fruit drop is the cause

In Kejiazhuang, Bishan County, Shaanxi Province, there are several fruit orchards where farmers have observed a notable issue in their kiwifruit crops. During the investigation, they found a hard spot on the fruits, with a spongy area forming beneath it, leading to severe rotting and fruit drop. Initially, the main cause was suspected to be damage from crickets, followed by infestation from the sooty mold. To address this problem, effective prevention and control measures for these pests are being discussed. The pest in question is known as the "pear pod" or "flower scorpion," commonly referred to as the "scorpion worm." It belongs to the family Hemipteridae, also known as the true bugs. This insect is particularly harmful to kiwifruit, but it also affects other fruit trees such as apples, pears, peaches, apricots, plums, and cherries. The life cycle of this pest results in only one generation per year. Both adult insects and nymphs feed on various parts of the tree, including flowers, buds, leaves, branches, and fruits, causing them to dry out and eventually fall off. The feeding activity also leads to sooty mold growth, which appears as black, coal-like spots on the leaves and fruits. This not only reduces the quality of the fruit but also interferes with photosynthesis, leading to leaf drying and further weakening of the tree. As the infestation progresses, the overall health of the tree deteriorates. In severe cases, the entire tree may die due to the cumulative effects of feeding and mold development. This issue is especially common in kiwifruit and peach orchards, where the impact can be quite devastating. To manage this pest effectively, several strategies can be employed. First, thorough garden cleaning is essential to remove any potential breeding sites. Second, improving cultivation practices—such as proper fertilization and pruning—can enhance tree vigor and resistance. Pruning should focus on increasing air circulation and light penetration within the orchard. Another method involves scraping the bark, especially old and cracked areas where the pests may hide. After scraping, burning the removed bark helps eliminate larvae. Manual removal of eggs is also an effective approach, especially when the eggs are clustered on the vines or in nearby grassy areas. Lastly, the use of environmentally friendly pesticides that meet the standards for pollution-free and green food production is recommended. These products help reduce chemical residues while effectively controlling the pest population. By implementing these integrated management techniques, farmers can significantly reduce the damage caused by the pear pod and ensure healthier, more productive orchards.

Precaution Of Infection

Precaution of Infection

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