| http://www.w3.org/ns/prov#value | - In all of these, environmental care is uppermost in the viticulturists??? minds and accordingly, they use integrated vineyard management, a code of sustainable agricultural practice which favours natural measures to control pests and other threats to the vines.PRINCIPAL VARIETIESTouriga Franca, Tinta Roriz and Tinta Barroca (the relative proportions of each vary from year to year).VINIFICATIONIn s
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