ABSTRACT


Abdón Guíñez S.1
 
In a field where potatoes had been grown, a rather heavy infestation of Meloidogyne spp., Pratylenchus spp., Xiphinema americanum, Ditylenchus spp., Trichodorus spp., Helicotylenchus spp y Criconemoides spp., was found in the soil. To reduce this infestation, several rotation systems were tried. When corn, wheat or fallow followed the potatoes, the level of infestation was reduced; but when potatoes were repeated, or red clover, or oats-Vicia sp. followed, an increase in nematode population occured, mainly of the root knot nematode (Meloidogyne spp.) and the lession nematode (Pratylenchus spp.).
Key words:
1Ing. Agr., Programa Nematología, Estación Experimental La Platina, Instituto de Investigaciones Agropecuarias (INIA), Casilla 5427, Santiago, Chile.