The chemical struggle

In order to prevent damaging insects from coming into contact with the crops and developing growth inhibiting substances, as well as for the aesthetic value of the crops, a widespread tendency is that of chemical interventions, using pesticides, fungicides, and plant protection products which have brought successes without completely resolving the problem.
First of all the chemical and microbiological means of control are effective in terms of their power of killing insects, but before being killed by any insecticide used in a greenhouse, they prick the plant and transmit the virus.
Chemical means are not capable of adequately controlling the action of the vectors either, because in time they end up by getting accustomed to the pesticide and become resistant against it, with the consequence of making the use of even more powerful and increasing quantities of pesticides inevitable.