Studies on a virus disease of pumpkin (Cucurbita maxima) [transmitted by white flies (Bemisia tabaci)]

agentes nocivos aleurode animal animal nuisible animales animales nocivos animals crops cucurbit vegetables cucurbita cucurbita maxima cucurbitaceae cucurbitales cultivos dicotiledoneas dicotyledons disease transmission diseases economic plants epidemiologia epidemiologie epidemiology facteur nuisible fruit vegetables hortalizas (plantas) hortalizas cucurbitaceas hortalizas de fruto injurious factors insecte nuisible noxious animals organisme nuisible pest insects pests plagas plantas plante plante de culture plants symptome symptoms transmission des maladies vectores vectors vegetable crops virose viroses virosis