Site-specific weed control by direct injection - an innovation for precision spraying in crop production

Abstract

In agriculture tank mixes with several pesticides are often used, where it is impossible to apply individual pesticides to specific areas. However, direct injection systems can be used for the specific use of individual pesticides on a sub-area basis, since they dose pesticides and water from separate containers in real time and mix them before application without causing residues. The technical conversion into practical equipment, which meets all requirements for dosage, reaction time and cleaning/residual quantities, is to be fulfilled with a fieldsprayer prototype with direct injection. In the practical tests a fieldsprayer with direct injection was developed and used. The aim of the project was to carry out an intensive examination of the direct injection under field conditions to assess the reliability of the system and the effects of the site-specific application. An important question in this context is the optimization of handling and electronics as well as the application in practical operation. The results show that a practical system for instantaneous direct injection could be implemented and that it is possible to use different crop protection agents for specific areas.