Tree An area of woodland composed primarily of trees established by planting or artificial seeding is known as a plantation. Trees are the source of many of the world's best known fleshy fruits. Apples, pears, plums, cherries and citrus are all grown commercially in temperate climates and a wide range of edible fruits are found in the tropics. Other commercially important fruit include dates, figs and olives. Palm oil is obtained from the fruits of the oil palm ("Elaeis guineensis"). The fruits of the cocoa tree ("Theobroma cacao") are used to make cocoa and chocolate and the berries of coffee trees,
Cacao swollen-shoot virus the whole plantation. Since the virus is transmitted readily through seed, only seed that is known to be free of the virus should be planted. "Planococcus njalensis" population density is closely correlated with density of ants in the genus "Crematogaster", which build protective carton tents over the mealy bug colonies. "Crematogaster" populations however are negatively correlated with populations of ants of the genus "Oecophylla". This could be a natural biological control that is worth considering if agents to control the "Crematogaster" ants are developed, since they should not target "Oecophylla" ants as well. Cacao swollen shoot virus has had a