Herbicide
They are chemicals that can control or manipulate undesirable vegetation. Herbicides are used widely in row-crop farming, where they are either applied before or after planting. Spraying herbicides prevents or minimizes other vegetation.
Insecticide
Insecticides are chemicals used to control insects by killing them or preventing them from engaging in undesirable or destructive behaviors. They are classified based on their structure and mode of action.
Fungicide
Fungicides are pesticides that kill or prevent the growth of fungi and their spores. They can be used to control fungi that damage plants, including rusts, mildews and blights. They might also be used to control mold and mildew in other settings.
KNAPSACK SPRAYER
A knapsack is a type of sprayer that disperses liquid through a hand-held nozzle that is attached to a pressurised reservoir carried on the operators back.