Phymatotrichopsis root rot and its biological control in the pecan tree in Mexico

In Mexico, phymatotrichopsis root rot is regarded as the most important disease in pecan tree. Its causative agent fungus Phymatotrichopsis omnivora (Duggar) Hennebert, and percentage of diseased trees ranges between 3 to more than 25% a plantation. Symptoms vary from mild damages death infected The roots invaded by die with consequent reduction foliage. Chemical control one used methods this pathogenic fungus, but it expensive not very efficient, so necessary try other such antagonistic fungi, resistant varieties, plant extracts, among others that have been shown some effectiveness, design an integrated management program for pest. For all reasons stated, objective review was address current aspects its biocontrol Mexico.