Many plants have natural defenses to insects that would like to feed on them. However, there are some insects that can do significant damage to plants and can even cause a great loss of flowers and garden vegetable productivity. A large variety of insecticides are available for killing some of the more destructive pests, though these insecticides should be carefully chosen since many can be harmful to humans and wildlife.
Many plants have natural defenses to insects that would like to feed on them. However, there are some insects that can do significant damage to plants and can even cause a great loss of flowers and garden vegetable productivity. A large variety of insecticides are available for killing some of the more destructive pests, though these insecticides should be carefully chosen, since many can be harmful to humans and wildlife.
Some insecticides contain arsenic. Arsenic is a highly poisonous metal that harms most life forms. Only some forms of bacteria are able to break arsenic down into a harmless form. However, plant life is often not harmed by arsenic, making it an effective insecticide. Still, those spraying the arsenic insecticide can become brain damaged.
Plants sometimes release chemicals that kill insects in order to protect the plant. These insecticides are often extracted and then applied to other plants as a natural form of insecticide. Some of these chemicals can still be harmful or even lethal to humans.
Carbamate insecticides interfere with the nervous system of insects. However, they can also harm cardiovascular system of humans when used in large quantities.
Desiccants are insecticides that are able to kill some insects by penetrating the exoskeleton of the insect and drying the insect out. This insecticide usually comes in the form of a powder and is used more in homes than on plants. Desiccants are commonly used because they are unlikely to harm humans.
Sodium fluoride is able to kill insects, but also often leads to plant damage. However, scientists discovered how to isolate insoluble fluorides that do not harm plants and are able to kill some insects. This chemical most often kills insects that clean themselves, since they get the insecticide on their feet and then often lick off the powder, which kills them in five to ten days. This chemical is also used in rat poison.
Insect growth regulators make it impossible for a particular species of insect to reach maturity. As a result, this insect is unable to reproduce. When the insects reach the end of their life cycle, they effectively die out. This form of insecticide is effective when used in combination with other forms of insecticide by reducing the number of insects that can reproduce to replace those pests killed by other insecticides.
Many gardeners prefer to use the natural predators of various insects in order to eliminate these insects. These natural predators are ideally species that do not harm the plant and have no harmful byproducts, making them safe to humans. However, some species are difficult to keep in a single area, since they will tend to roam to wherever they can find food.