Pesticides are substances used to prevent, kill, or repel any pest. Rats and insects are most commonly the target pests. An insecticide on the other hand is a chemical that is used to control insects whether that means killing or simply repelling. Insecticides in short are a type of pesticide. The difference between the two is that an insecticide is engineered specifically for insects while a pesticide has a more broad range of targets.
Insecticides are usually combined with numerous other broad pesticides in spraying crops to increase yield per acre and decrease damage. The two types are ovicides and larvacides which prevent insect larvae or eggs from becoming new insects. This will stop the insect problem at the source.
Pesticides come in a wide variety. There are herbicides, fungicides, insecticides, rodenticides, and molluscicides. These types refer to the target herb variety that they are meant to destroy.
Herbicides – A substance (either chemical or a living organism known as bioherbicides) used in the destruction of plants. Can kill plants or inhibit their growth. Accounts for approximately 70% of all pesticides used.
Fungicides- A substance whose purpose is to destroy fungus. Also called anti-fungal agents by medical professionals.
Insecticides- Pesticides specifically geared towards killing or repelling insects.
Rodenticides- A substance used to kill rats, mice, and other rodents in order to prevent the damage of food and other crops.
Molluscicides- A pesticide targeted towards mollusks commonly used in gardening or agriculture to kill slugs and snails that can cause damage to crops
Where to get pesticides:
www.getpesticidesinfo.com is a great resource for information on pesticides, including price comparison and health effects. Large farms usually have a supplier who administers the pesticides and monitors soil conditions as a result.
Pesticides and insecticides both have the purpose of killing living organisms. Although both categories can be formulated to target specific organisms, they can have a negative impact on other organisms that it comes into contact with. Both compounds can also be extremely toxic and dangerous to humans. They should be used sparingly and organic compounds are safer than chemical ones. Make sure to read instructions carefully and take notice to specific warnings.
Information found on doityourself.com and wikipedia.org