Choice of subterranean clover cultivars for productive and non-productive destinations in Mediterranean environment [Tuscany]

acid soils agronomic characters caratteri agronomici clima mediterraneo ecotipi ecotipos ecotypes environmental factors facteur du milieu factores ambientales fattori ambientali mediterranean climate oversowing pascoli pastizales pastures resiembra semis sous couvert sol acide suoli acidi toscana toscane trasemina trifolium subterraneum tuscany variedades varieties