When did crop dusting begin?

The practice of crop dusting or aerial application began in the early 20th century. The first recorded instance of aerial crop dusting was in 1911, when a biplane was used to spray insecticide on crops in California. However, it was not until the 1920s that crop dusting began to be used more widely. At that time, farmers began to use airplanes to spray insecticides and fungicides on their crops. In the 1930s, crop dusting began to be used for fertilizing crops as well. Today, crop dusting is a common practice in many countries around the world, and is used to apply various chemicals to crops, including insecticides, fungicides, herbicides, and fertilizers.