[How to cope with Nematoda problems in the fruit rotation sugarbeets-patatoes-winter wheat?]

beta vulgaris control cultural cropping systems cultural control fertilidad del suelo humus labranza lutte culturale nematoda papa pomme de terre potatoes remolacha azucarera rendement rendimiento rotation culturale rotational cropping sistemas de cultivo soil fertility sugar beet tillage travail du sol trigo triticum aestivum wheats yields