The experiments on effectiveness of Repentol 6 PA and Emol 10 LA in forest cultivations protection against cervoids were carried out separately on coniferous and deciduous trees. Observations were made once a month and former damages were estimated. The experiments showed good effectiveness of both repellents against cervoids, however the effectiveness of Repentol 6 PA was found out to be better.
Factors influencing the development of agrophages’ resistance to pesticides, as well as methods for its prevention are discussed in the article. A special emphasis has been paid to integrated plant protection programmes as main factors to reduce resistance risk to pesticide. Some examples of the effective use of rotation of insecticide active substances with different mode of action to reduce the development of pests’ resistance in Poland are also shown.