The goal of the herewith presented brochure is to provide a practical introduction to the application technique with subcanopy devices (droplegs) for growers and advisers. The brochure is meant to contribute to a better and more comprehensive knowledge of the dropleg-application technique. The brochure describes and illustrates the design and function of droplegs. A series of chapters outlines the use of droplegs in various crops such as vegetables, field crops and specialty crops. Advantages and disadvantages of the dropleg application technique are discussed. Based on applied field research with droplegs and practical experiences by contract sprayers and a range of ordinary farmers the brochure lists recommendations for the purchase and use of droplegs. For a correct and efficient use of droplegs the brochure will need to be complemented by the help of a technical adviser who takes into account the distinct crop situation on each farm.