Tropical Crops: Dicotyledons, Volume 1
The origin and spread of tropical crops; Anacardiaceae; Bombacaceae; Cannabidaceae; Caricaceae; Compositae; Convolvulaceae; Cruciferae; Cucurbitaceae; Euphorbiaceae; Lauraceae; Leguminosae; Caesalpinioideae; Mimosoideae; Papilionoideae; Malvaceae; Moraceae; Myristicaceae; Myrtaceae; Passifloraceae; Pedaliaceae; Piperaceae; Rubiaceae; Rutaceae; Solanaceae; Sterculiaceae; Theaceae; Tiliaceae; Urticaceae; Other useful products.
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THE ORIGIN AND SPREAD OF TROPICAL CROPS
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acre Africa America annual areas Asia bark base beans branches Brazil brown calyx causes cent century China clones cm long cocoa coffee colour contain cotton countries cover crop cultivated cuttings developed diameter diseases DISTRIBUTION dried early East eaten Europe exports fibre flowers followed forms fruits GERMINATION give green grow grown growth harvested herb hybrids important IMPROVEMENT increase India inflorescence introduced known later leaf leaves longitudinal male mature months NAME native natural obtained occur ORIGIN ornamental particularly pests plants pods POLLINATION produced propagated regions removed resistance roots round rubber seedlings seeds selection shade shoot short soil sometimes South species spread stamens stems taken takes throughout tons trees tropics types United usually vegetable West widely wild World yellow yields young