odified formulations of traditional pesticides, growth regulators and seed treatments are among the first nano-chemicals that could be used in agriculture. The greatly reduced particle size compared to conventional pesticides and the associated increase in surface area cause a fundamental change in the physico-chemical properties of nano-pesticides. Compared to larger particles of the same chemical substance, nanoparticles are more reactive, more biologically active and have a stronger catalytic effect. The use of nanoparticles could make pesticides more effective. Nanocapsules that release active ingredients in a targeted manner can also be used more sparingly with the same effect. That's why manufacturers of agrochemicals want to reduce the components of their products to nano-size or package the active ingredients in nano-capsules that only open under very specific conditions such as heat, sunlight or the alkaline environment inside an insect's stomach. Nanoparticles are intended to ensure that pesticides and fertilizers can be used more effectively.