Biological control is the use of living organisms to suppress pest populations, making them less harmful than they would otherwise be. This method of pest control is now much more cost-effective than chemical control in Europe. An example of a pest successfully controlled by introducing new natural enemies is the alfalfa weevil. Biological control can be used against all types of pests, including vertebrates, plant pathogens, weeds, and insects.
However, the methods and agents used vary depending on the type of pest.In Cedar City, dinotefuran (insect control of trees and shrubs with green light with Safari 2G, Safari) is effective against most types of scales. Imidacloprid is also effective against European elm scales and most soft scales, but it does not control cotton scales or most armored scales. Therefore, it may be necessary to reintroduce natural enemies regularly to maintain pest control in annual crops or other highly disturbed systems.Ant control, habitat manipulation, and pesticide management are key strategies for conserving natural enemies. If ants are abundant, selectively control them.
Grow a variety of flowering plants to attract and support natural enemies. Adults of predatory insects, lacewings, ladybugs, and parasitic wasps live longer and lay more eggs when they have nectar or pollen from plants and honeydew from insects to feed on. Avoid creating dust because it interferes with natural enemies; for example, rinse small plants when the foliage becomes dusty.The need for pesticides can be reduced by using resistant varieties, cultivation methods that reduce pest abundance or damage, methods for manipulating pest behavior to mate or find hosts, and physical methods of control. When a non-toxic method is found to control a key pest, reducing the use of pesticides and increasing the survival of natural enemies usually reduce the number and damage of secondary pest species that were previously important.Yugoslavica will be more effective when released together with other biological control agents for centaurea listed in this field guide.
This stagnation in pest management has led to calls for integrated pest management to refocus on preventing pest problems through a greater understanding of the ecology of pests, improving the ability of plants and animals to defend themselves against pests, and creating populations of beneficial organisms.
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