Tignanello - is a 47 hectare vineyard acquired in 1900 and gives its name to Antinori's most famous wine, designated a Vino da Tavola since the mid-1970s and IGT Toscana since the early 1990s. Since 1982, Tignanello has been made from 85% Sangiovese , 10% Cabernet Sauvignon and 5% Cabernet Franc .
In one example, a ten-year experiment in Malawi showed that, by using the fertilizer tree Gliricidia (G. sepium) on land on which no mineral fertilizer was applied, maize/corn yields averaged 3.3 metric tons per hectare (1.5 short ton/acre) as compared to 1 metric ton per hectare (0.45 short ton/acre) in plots without fertilizer trees or ...