Handpicking, brushing, crushing, or washing insect pests from infested trees are also physical or mechanical controls. Pesticidal Method Pesticides are chemicals specifically designed to kill or harm pests. Today, several hundred pesticides are available and are designed to address a wide variety of pest problems. However, each pesticide is applicable, either biologically or legally, to a limited number of pest organisms and sites. No one pesticide is applicable for all situations.
Pesticides are poisons, and by their very nature require judicious and skillful use.
In the hands of knowledgeable users, pesticides can be an important control method. All pesticide containers must have labels. Conclusion All of these methods of pest control involve the concept of prevention. Many insects and disease problems affecting trees can easily be prevented. Unfortunately, they are not.