[Testing of carrot cultivars for early growing under plastic film covers [Nanthya, Nantucket, Duke, Touchon, Tancar, Tiana]]

agronomic characters calidad crops cultivar cultivars cultivation cultivo cultivo protegido cultivos culture sous abri daucus daucus carota dicotiledoneas dicotyledons economic plants hortalizas (plantas) methode methods plantas plante plante de culture plante racine plants pratique culturale productividad productivity profitability protected cultivation protection quality rendement rendimiento rentabilidad root crops root vegetables umbelliferae umbelliflorae vegetable crops weather control yields