Formulation of solid plant protection products

The formulation of solid crop protection products is composed of different ingredients, each with a different function. Let's have a look.

The main compound in a crop protection product is the active ingredient. It is this part that is responsible for controlling the pest. The solids are mixed for ease of use with other compounds. These compounds are called inert ingredients and can be talc, clay, chalk, among others. They may change depending on the target application.

• Powders

These pesticides are very finely ground mixed with other ground solids to reduce their concentration and are ready for use. The concentration of active material does not usually exceed 10%. It is important to note that the applicator must be protected from inhalation of the product.

• Granulates

In the case of granular formats the active material is combined with the same carriers as the powders, but a binding agent is included. The result of the mixing is small granules of carrier material coated with a layer of active substance. Product concentrations typically range from 1 to 15%. They are applied by spreading them evenly over the soil and are often used to control weeds, or insects living in thatch or soil. With moisture the active ingredient is released.

• Bait

This ingenious control method consists of mixing the active ingredient with food that is attractive to the pest. To use it, the biology of the insect to be controlled must be known. Control is usually very effective by avoiding heavy pesticide coverage.

• Fumigants

Fumigants are not necessarily solids, as they are found as solids, liquids and gases. When applied they form poisonous gases. They are very effective but complex to use and dangerous in inexperienced hands. Use on the ground is done under tarpaulins that prevent the gases from escaping into the atmosphere.