[Pests and diseases. Nematode control] | Ennemis et maladies. Lutte contre le nematode

beta vulgaris chemical control control cultural control de nematodos cultural control efficiency eficacia france francia genetic control heterodera schachtii lutte chimique lutte culturale nematicides nematocidas nematocide nematode control nematodos de las plantas pest resistance plant nematodes plantas azucareras resistencia a las plagas rotation culturale rotational cropping sugar crops variedades varieties