Nature has always followed the principle of "natural selection and survival of the fittest", which means that only pests that adapt to the environment and can resist pesticides can survive. However, due to the targeted selection of pesticides, some resistant pests have survived, and as pest resistance increases, pesticide use continues to increase, thus entering a vicious cycle that continues without an end. Many farmer friends now feel this deeply, because pests are becoming more and more difficult to effectively control. Therefore, I have compiled several recognized highly resistant pests and recommended solution products, hoping to provide some help to fellow farmers.

1. Corn Borer

Corn borer is a serious pest that damages corn. Its larvae feed on corn plants, gnawing on corn leaves and stems, causing plant growth retardation, leaf yellowing, and may cause fungal disease infections. Injured corn plants will show symptoms such as reduced ear yield and incomplete grains.

2. Cotton bollworm

The bollworm is one of the major pests of cotton. Its larvae feed on cotton seedlings, leaves and flowers, causing the cotton plant to wilt and eat the leaves. In severe cases, the entire plant may die. In addition, the cotton bollworm will eat the cotton seeds inside the cotton boll, resulting in reduced yield and quality.

3. Rice leaf roller

Rice leaf roller is one of the main pests of rice. Its larvae feed on rice leaves, curling them and digging in them to feed, causing the leaves to gradually dry out, reduce yield and shrink. When severely infected, the entire rice plant in the rice field will be affected, seriously affecting the yield and quality of rice.

4. Spodoptera litura

Spodoptera litura is one of the major pests of crops such as corn, cotton and vegetables. Its larvae feed on crop leaves and can quickly cause widespread damage when appearing in large numbers. The larvae of Spodoptera litura will eat the leaves and ears of crops, causing the leaves to become skeletonized, withered, damaged or perforated by food, seriously reducing the photosynthetic capacity and yield of the crops. In addition, Spodoptera litura can also transmit a variety of plant viruses, such as corn mosaic virus.

These highly resistant pests cause serious damage to crops, possibly leading to reduced yields, reduced quality and even death. Farmers need to take appropriate control measures, such as using biological control, chemical pesticides, etc. to control the number of pests and protect the growth and development of crops.

Reasonable use of chemical pesticides:

When using chemical pesticides, pay attention to selecting the appropriate pesticide and applying it in accordance with the correct dosage and usage method. The misuse of pesticides of the same type or with the same mechanism of action should be avoided to reduce the development of pest resistance to pesticides. In addition, different pesticide active ingredients should be rotated regularly to avoid long-term continuous use of the same pesticide.

1. Emamectin Benzoate2% +Chlorfenapyr 10% SC has broad-spectrum insecticidal ability. It exerts its effect through gastric poisoning, contact killing, and systemic absorption. It has no cross-resistance to other insecticides, especially against Highly resistant pests have great results.

2. It is recommended to use 30% Thiamethoxam SC, which has a wide insecticidal spectrum, strong systemic properties, high activity, promotes growth, and uses a low dosage.

Introducing natural enemies and parasites :

Natural enemies and parasites are an effective way to control pest populations in nature. By introducing appropriate natural enemies and parasites, you can help control populations of highly resistant pests. Before introducing natural enemies and parasites, adequate surveys and risk assessments need to be conducted to ensure that the introduced species are compatible with the local ecological environment and will not cause other problems.

Detection and warning

Establish a pest monitoring and early warning system to keep abreast of the occurrence and trends of pests so that timely and effective prevention and control measures can be taken. Monitoring can include methods such as insect population density surveys, trap monitoring, and pest biological observations.

The comprehensive application of the above prevention and control methods can effectively reduce the damage caused by highly resistant pests to crops and maintain the yield and quality of crops. At the same time, the prevention and control effects are regularly evaluated and adjustments and improvements are made according to the actual situation.