Alternative management of root-knot nematodes (Meloidogyne incognita) in beans (Phaseolus vulgaris).

The bean diseases have been responsible for major yield losses. The root-knot caused by the nematode Meloidogyne have been highlighted in recent years, especially in the soybean growing regions. Thus the aim of this study was to evaluate the potential of induction of resistance by Trichoderma and plant extracts compared with chemical terbufos and water in controlling nematode galls. Thousand nematode larvae J2 were inoculated in the root system of each plant. The evaluation took place 60 days after inoculation. The use of terbufos was efficient, but with the entire load of environmental impact. Alternative treatments of applying Trichoderma to the soil and incorporation of crotalaria leaves in the ground exerted the greatest effect in reducing the severity of disease and pathogen in greenhouse conditions.