Plant pesticides Plants have undergone an evolutionary period of 400 million years, during which time mechanisms such as the production of repellents and insecticides have evolved to protect themselves against insects that attack them. Plant species contain natural insecticides. Some of these substances have been used by humans since ancient times, but many of these […]
Pesticides are prepared as a relatively pure chemical called technical substance. The technical substance is relatively pure and contains 95 to 100% of the active substance.