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Common Pesticides

There are 4 main types of pesticides: insecticides, herbicides, fungicides, and rodenticides. Insecticides can be classified into 5 categories based on how they enter an insect's body - stomach, contact, fumigants, residual, and systemic. Fungicides specifically inhibit or kill fungi that cause plant diseases. Rodenticides must be tasteless and odorless at lethal doses, and have a delayed effect, as rodents will test food before fully consuming it. Common rodenticides are anticoagulants that block vitamin K production, preventing blood clotting over 1-2 weeks after ingestion.

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156 views3 pages

Common Pesticides

There are 4 main types of pesticides: insecticides, herbicides, fungicides, and rodenticides. Insecticides can be classified into 5 categories based on how they enter an insect's body - stomach, contact, fumigants, residual, and systemic. Fungicides specifically inhibit or kill fungi that cause plant diseases. Rodenticides must be tasteless and odorless at lethal doses, and have a delayed effect, as rodents will test food before fully consuming it. Common rodenticides are anticoagulants that block vitamin K production, preventing blood clotting over 1-2 weeks after ingestion.

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© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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COMMON PESTICIDES:

*There are 4 common types of pesticides being used


today: Insecticides, herbicides, fungicides, and
rodenticides.
*Insecticides are used to kills insects, herbicides are used
to kill weeds and unwanted plants in the plantation,
fungicides are used to kill fungal spores and control
fungal disease, and rodenticides kill rats and other
rodents.
INSECTICIDES:
*Insecticides are classified according to the method of
application and the way they enter the insect's body.
Many insecticides take effect in more than one way.

*Stomach Insecticides are applied on the surface of


plants, fabrics, and wood, or are added to bait. The
insecticide is eaten, along with the food material, by
insects that chew, such as ants, caterpillars, and
grasshoppers.

*Contact Insecticides are sprayed or dusted on the


insect's body. The poison is absorbed through the body
wall. Most soft-bodied insects are vulnerable to contact
insecticides.

*Fumigants are insecticidal gases. Insects that lurk out of


reach of sprays are killed when they breathe the gas.
Fumigants are used by professional exterminators to rid
houses of cockroaches and bedbugs and to kill beetles in
grain bins. The soil may be fumigated to destroy grubs
that attack roots.

*Residual Insecticides are applied to foliage, the bodies of


livestock and pets, and to screens and walls. Insects
absorb deadly doses by touching the poisoned surface.

*Systemic Insecticides are absorbed by plant tissues, so


that when insects feed on the sap they are poisoned.

*Not only do they affect our food greatly, but insects are
becoming immune/ resistant so companies are making
the substance stronger.

FUNGICIDES:
*Fungi are the number one cause of crop loss worldwide.
Viruses, nematodes, and bacteria also cause diseases in
plants
*A fungicide is a specific type of pesticide that controls
fungal disease by specifically inhibiting or killing the
fungus causing the disease.

RODENTICIDES:
*Rodents are difficult to kill with poisons because their
feeding habits reflect their place as scavengers. They will
eat a small bit of something and wait, and if they don't
get sick, they continue. An effective rodenticide must be
tasteless and odorless in lethal concentrations, and have
a delayed effect.
*Anticoagulants are defined as chronic (death occurs
after one to two weeks after ingestion of the lethal dose,
rarely sooner), single-dose (second generation) or
multiple-dose (first generation) rodenticides, acting by
effective blocking of the vitamin K cycle, resulting in
inability to produce essential blood-clotting factors

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