Detailed Explanation of Control Methods for Common Apple Diseases and Pests
China is a major apple-growing country. With exports and related products entering the market, demand for apples has gradually expanded, which has also led to a gradual increase in planting area. Along with this come infestations of various diseases and pests, affecting apple yield and quality as well as fruit growers' income. So what are the common apple diseases and pests? How should they be controlled? Let's take a look with Qinnongwang.
1. Anthracnose
Anthracnose is one of the important fruit diseases on apples, occurring in all major regions of China. It mainly damages the fruit. In the early stage of the disease, brown spots appear on the fruit; the spots rapidly expand and turn dark brown, the affected area becomes sunken, and the flesh inside rots. Ultimately this causes the fruit to rot and drop, resulting in huge losses.
Control methods: Before the plant sprouts, clear away and burn the residual branches and fallen leaves around the plant to reduce pathogens. Strengthen control and management when the fruit first sets, with sterilization and disinfection. When the disease occurs, spray chemicals for control.
2. Ring rot
Ring rot is also one of the important fruit diseases on apples and often occurs mixed with anthracnose, making it hard to distinguish. When the disease occurs, brown water-soaked spots appear on the affected part. As the disease worsens, concentric ring-patterned spots of alternating dark and light appear, with an obvious pale water-soaked ring at the outer edge, causing the fruit to rot with a sour, fermenting odor.
Control methods: Eliminate overwintering pathogens, promptly remove residual branches and fallen leaves, strengthen management, apply more fertilizer, and improve the plant's disease resistance. When the disease occurs, promptly remove the affected parts and then use chemicals for control.
3. Early defoliation disease
Early defoliation disease is a plant disease; it is a general term for various diseases that harm plant leaves. When it occurs, the leaves show different symptoms, ultimately causing the leaves to drop early, weakening tree vigor, and in severe cases causing the plant to sprout and bloom a second time during overwintering, resulting in poor yield the following year.
Control methods: Likewise, collect, clear away and burn the residual branches and fallen leaves in the orchard, deep-plow and disinfect the soil, apply more fertilizer to strengthen disease resistance, and when disease is found, promptly remove the diseased parts and then spray chemicals for control.
4. Pests
The main pests of apples include spider mites, fruit borers, and tortricid moths. They harm the plant's leaves, trunk, treetops, and fruit, causing relatively great damage to the plant. In mild cases, the plant grows poorly and yield is reduced; in severe cases, the plant dies.
Control methods: Clear weeds and fallen leaves from the orchard, eliminate overwintering eggs, and reduce pest sources. Natural enemies can be introduced for control, or chemicals can be sprayed for control, but attention should be paid to the application method and concentration so as not to harm plant growth.
The above are the control methods for common apple diseases and pests brought to you by Qinnongwang. Doing a good job in disease and pest control measures is the key point for achieving high and quality yields. That is all for the introduction to apple disease and pest control. We hope it is helpful to you. For more related agricultural knowledge, please stay tuned to Qinnongwang.