Quality of oil seed rape treatment with different type of nozzles on sprayers

Oil seed rape is one of three most important culture on the world. Production and protection of oil seed have some specific according to other cultures. When we speak of mechanization in oil seed production then we think on seed treatment with plant protection products. There is also need for protection against weeds, disease and insect. Sometime we need to protect oil seed rape against rodent using some rodenticide. In some moister condition it can be done desiccation with nonselective herbicide. Efficiency of pesticide application depends from application time and correct use and choice of machine and nozzles for application. This paper work analyze problems in oil seed rape protection from insects meligethes aeneus which cause damages and decrease of yield. Accent is on quality parameters analyses of using different type of nozzles for insecticides application in spring. The most important parameters which was analyze in this paper is leaf coverage. Treating was done with application rate 200 l/ha and three different type of nozzles. The lowest leaf coverage was achieved with standard nozzles Lechler LU12004, 36,79 %. Better coverage was achieved with nozzles IDK 12004, 37,24 % and the best overages was reached with 'Twin Jet' IDKT 04 nozzles. It was a coverage of 44,64 %.