Sure, here is an article on control of sucking and chewing type insects in guava trees:
Insects are a common pest problem for guava trees, with sucking and chewing insects being some of the most damaging. Sucking insects, such as aphids and mites, feed on the sap of the tree, causing yellowing and wilting of leaves, stunted growth, and even death of the tree if the infestation is severe. Chewing insects, such as caterpillars and beetles, feed on the leaves and fruit of the tree, causing visible damage and reducing fruit yield.
To control sucking and chewing insects in guava trees, it is important to first identify the specific pest infestation. Inspect the leaves, branches, and fruit of the tree for signs of feeding damage, such as holes, wilting, or discoloration. If you are unsure of the pest causing the damage, consult a local extension office or arborist for help identifying the pest.
Once the pest has been identified, there are several methods that can be used to control sucking and chewing insects in guava trees. One effective method is to introduce natural predators of the pests, such as ladybugs or lacewings, to the tree. These predators will help to control the population of the insects without the need for chemical pesticides.
If natural predators are not an option, chemical pesticides can also be used to control sucking and chewing insects in guava trees. Be sure to choose a pesticide that is labeled for use on guava trees and follow the instructions on the label carefully. It is important to apply pesticides early in the morning or late in the evening when the insects are most active, and to reapply as needed to ensure complete control of the infestation.
In addition to natural predators and pesticides, cultural practices can also help to control sucking and chewing insects in guava trees. Pruning the tree regularly to remove infested branches and leaves can help to reduce the population of pests, as can keeping the area around the tree free of debris and weeds that can harbor insects.
By using a combination of natural predators, pesticides, and cultural practices, it is possible to control sucking and chewing insects in guava trees and protect the health and productivity of the tree. Regular monitoring of the tree for signs of pest infestation and prompt action to control the pests can help to ensure a healthy and bountiful harvest of guavas.