Case: The cashew
Case: The cashew The cashew tree is best known today for its nuts, which account for about 20 percent of the value of nuts produced worldwide—a value about equal to that of almonds or hazelnuts. The fruit of the tree (known as the cashew apple), however, drew first attention. The Tupi Indians of Brazil first harvested the cashew apple in the wild. They later introduced it to early Portuguese traders, who in turn propagated the plant in other tropical countries. But attempts to grow the tree on plantations proved unsuccessful because the cashew was vulnerable to insects in the close quarters of plantations. Instead, some of the abandoned plantation trees propagated new trees in the wild where they thrived in the forests of India, East Africa, Indonesia, and Southeast Asia. Several factors inhibited early use of the cashew nut. First, cashew fruit matures before the nut, so the fruit is spoiled by the time the nut can be harvested usefully. Second, the processing of cashew nuts is t...