Market research on two natural predators of walnut pests: Trichogramma ssp andChrysoperla carnea, in Delicias City, Chihuahua

In Mexico, as in the world, the production of food of agricultural origin requires protection against pests and diseases that limit and/or destroy it, through the application of chemical pesticides (PQ) that, although they control them, also cause environmental pollution and in consequently deteriorating the quality of human life. Since plants began to be cultivated on a massive scale, pest problems began to arise, that is, where the population of very large insects that ate the crops and an alternative to controlling these insects is to occupy their natural predators or their natural pathogens for control. Since the 1940s, biological control has been applied in Mexico. The first pest that was fought with this method was the citrus black fly, where specialists imported a wasp from Australia. Since this time, in the 1940s, when these wasps were introduced, there has been no need for chemical control of this particular pest in Mexico. The use of biological control is regulated by Official Mexican Standards to avoid the potential risks it represents; once a species is released into the environment, it is no longer possible to remove it.