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Yam Production In Nigeria
Nigeria is by far the world’s largest producer of yams, accounting for over 70–76 percent of the world production. According to the Food and Agriculture Organization report, in 1985, Nigeria produced 18.3 million tonnes of yam from 1.5 million hectares, representing 73.8 percent of total yam production in Africa. According to 2008 figures, yam production in Nigeria has nearly doubled since 1985, with Nigeria producing 35.017 million metric tonnes with value equivalent of US$5.654 billion. In perspective, the world's second and third largest producers of yams, Côte d'Ivoire and Ghana, only produced 6.9 and 4.8 million tonnes of yams in 2008 respectively. According to the International Institute of Tropical Agriculture, Nigeria accounted for about 70 percent of the world production amounting to 17 million tonnes from land area 2,837,000 hectares under yam cultivation. Yam is in the class of roots and tubers that is a staple of the Nigerian and West African diet, which provides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its continental landmass. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, at the centre of the land and water hemispheres, water hemisphere, Oceania is estimated to have a land area of about and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the list of continents and continental subregions by population, second-least populated after Antarctica. Oceania has a diverse mix of economies from the developed country, highly developed and globally competitive market economy, financial markets of Australia, French Polynesia, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much least developed countries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hausa Potato
''Coleus rotundifolius'', synonyms ''Plectranthus rotundifolius'' and ''Solenostemon rotundifolius'', commonly known as native potato or country potato in Africa and called Chinese potato in India, is a perennial herbaceous plant of the mint family (Lamiaceae) native to tropical Africa. It is cultivated for its edible tubers primarily in West Africa, as well as more recently in parts of Asia, especially India, Sri Lanka, Malaysia, and Indonesia. ''C. rotundifolius'' is closely related to the coleus plants widely cultivated as ornamentals and is now again placed in the genus ''Coleus'', after being placed in the defunct genus ''Solenostemon'' and in ''Plectranthus''. Use and cultivation The egg-shaped tubers of the native potato appear very similar to the unrelated true potato, though they are smaller than modern commercial varieties. They are typically boiled, but may also be roasted, baked, or fried. Their flavor is bland, but sweeter than '' Coleus esculentus''. Native pota ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sweet Potato
The sweet potato or sweetpotato (''Ipomoea batatas'') is a dicotyledonous plant in the morning glory family, Convolvulaceae. Its sizeable, starchy, sweet-tasting tuberous roots are used as a root vegetable, which is a staple food in parts of the world. Cultivars of the sweet potato have been bred to bear tubers with flesh and skin of various colors. Moreover, the young shoots and leaves are occasionally eaten as greens. The sweet potato and the potato are in the order Solanales, making them distant relatives. Although darker sweet potatoes are often known as "yams" in parts of North America, they are even more distant from actual yams, which are monocots in the order Dioscoreales. The sweet potato is native to the tropical regions of South America in what is present-day Ecuador. Of the approximately 50 genera and more than 1,000 species of Convolvulaceae, ''I. batatas'' is the only crop plant of major importance—some others are used locally (e.g., ''I. aquatica'' "ka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cassava
''Manihot esculenta'', common name, commonly called cassava, manioc, or yuca (among numerous regional names), is a woody shrub of the spurge family, Euphorbiaceae, native to South America, from Brazil, Paraguay and parts of the Andes. Although a perennial plant, cassava is extensively cultivated in tropical and subtropical regions as an annual crop for its edible starchy tuberous root. Cassava is predominantly consumed in boiled form, but substantial quantities are processed to extract cassava starch, called tapioca, which is used for food, animal feed, and industrial purposes. The Brazilian , and the related ''garri'' of West Africa, is an edible coarse flour obtained by grating cassava roots, pressing moisture off the obtained grated pulp, and finally drying it (and roasting in the case of both and ''garri''). Cassava is the third-largest source of carbohydrates in food in the tropics, after rice and maize, making it an important staple food, staple; more than 500 million pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuber
Tubers are a type of enlarged structure that plants use as storage organs for nutrients, derived from stems or roots. Tubers help plants perennate (survive winter or dry months), provide energy and nutrients, and are a means of asexual reproduction. Stem tubers manifest as thickened rhizomes (underground stems) or stolons (horizontal connections between organisms); examples include the potato and Yam (vegetable), yam. The term ''root tuber'' describes modified lateral roots, as in sweet potatoes, cassava, and dahlias. Terminology The term originates from the Latin , meaning 'lump, bump, or swelling'. Some writers limit the definition of ''tuber'' to structures derived from Plant stem, stems, while others also apply the term to structures derived from roots., p. 124 Stem tubers A stem tuber forms from thickened rhizomes or stolons. The top sides of the tuber produce shoots that grow into typical stems and leaves and the undersides produce roots. They tend to form at the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Savanna
A savanna or savannah is a mixed woodland-grassland (i.e. grassy woodland) biome and ecosystem characterised by the trees being sufficiently widely spaced so that the canopy does not close. The open canopy allows sufficient light to reach the ground to support an unbroken herbaceous layer consisting primarily of grasses. Four savanna forms exist; ''savanna woodland'' where trees and shrubs form a light canopy, ''tree savanna'' with scattered trees and shrubs, ''shrub savanna'' with distributed shrubs, and ''grass savanna'' where trees and shrubs are mostly nonexistent.Smith, Jeremy M.B.. "savanna". Encyclopedia Britannica, 5 Sep. 2016, https://www.britannica.com/science/savanna/Environment. Accessed 17 September 2022. Savannas maintain an open canopy despite a high tree density. It is often believed that savannas feature widely spaced, scattered trees. However, in many savannas, tree densities are higher and trees are more regularly spaced than in forests.Manoel Cláudio da ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rain Forests
Rainforests are forests characterized by a closed and continuous tree canopy, moisture-dependent vegetation, the presence of epiphytes and lianas and the absence of wildfire. Rainforests can be generally classified as tropical rainforests or temperate rainforests, but other types have been described. Estimates vary from 40% to 75% of all biotic species being indigenous to the rainforests. There may be many millions of species of plants, insects and microorganisms still undiscovered in tropical rainforests. Tropical rainforests have been called the "jewels of the Earth" and the " world's largest pharmacy", because over one quarter of natural medicines have been discovered there. Rainforests as well as endemic rainforest species are rapidly disappearing due to deforestation, the resulting habitat loss and pollution of the atmosphere. Definition Rainforests are characterized by a closed and continuous tree canopy, high humidity, the presence of moisture-dependent vegetat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chinese Yam
''Dioscorea polystachya'' or Chinese yam ( zh, s=山药, t=山藥), also called cinnamon-vine, is a species of flowering plant in the yam family. It is sometimes called Chinese potato or by its Korean name ''ma''. It is also called huaishan in Mandarin and wàaih sāan in Cantonese. It is a perennial climbing vine, native to East Asia. The edible tubers are cultivated largely in East Asia and sometimes used in alternative medicine. This species of yam is unique as the tubers can be eaten raw. Range This plant grows throughout East Asia. It is believed to have been introduced to Japan in the 17th century or earlier. Introduced to the United States as early as the 19th century for culinary and cultural uses, it is now considered an invasive plant species. The plant was introduced to Europe in the 19th century during the European Potato Failure, where cultivation continues to this day for the contemporary East Asian food market. Taxonomy The botanical names ''Dioscorea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioscorea Esculenta
''Dioscorea esculenta'', commonly known as the lesser yam, is a yam species native to Island Southeast Asia and introduced to Near Oceania and East Africa by early Austronesian voyagers. It is grown for their edible tubers, though it has smaller tubers than the more widely-cultivated '' Dioscorea alata'' and is usually spiny. Names In Javanese, and particularly in Bahasa Indonesia, it is called ''gembili''. In Tagalog, it is known as ''tugi,'' while in Cebuano it is called ''apali''. It is cultivated in Kerala, Goa, Konkan parts of Maharashtra India. In Malayalam, it is known as ''nana kizhangu'' or ''nheruvalli kizhangu'' or "Cheru Kizhangu". In Goa it is called ''Kaate Kanaga (काटे कणगा )'', It is a climber which needs support and goes coiling around the support. History of cultivation The lesser yam is the second most important yam crop among Austronesians. Like ''D. alata'', it requires minimal processing, unlike the other more bitter yam species. Howev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioscorea Hispida
''Dioscorea hispida'', also known as the Indian three-leaved yam, (Tagalog: nami, Indonesia: gadung) is a species of yam in the genus ''Dioscorea'', native to South and Southeast Asia. Known to be poisonous when fresh, careful processing is required to render it edible. Culinary use Several peoples use the tuber as food. The tuber is toxic when fresh due to the presence of saponins and calcium oxalate raphides Raphides ( ; singular ''raphide'' or ''raphis'') are needle-shaped crystals of calcium oxalate monohydrate (prismatic monoclinic crystals) or calcium carbonate as aragonite ( dipyramidal orthorhombic crystals), found in more than 200 families o ..., so it must be processed prior to consumption, typically by finely slicing into thin strips, placing in a sack or net, and leaving in a stream for a few days until the toxins have leached out. It is then dehydrated and cooked. Herbal medicine Grated gadung tubers are utilized in Indonesia and China for the treatment of ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dioscorea Dumetorum
''Dioscorea dumetorum'', also known as the bitter yam, cluster yam, trifoliate yam, or three-leaved yam, is a species of flowering plant in the yam family, ''Dioscorea.'' It is native to sub-Saharan Africa and especially common in the tropical regions of West Africa, including Nigeria, Benin, and Ghana. ''D. dumetorum'' has both toxic and non-toxic varieties. Description ''Dioscorea dumetorum'' has distinctive trifoliate leaves, similar to the Indian three-leaf yam '' Dioscorea hispida''. Each leaf has 3 to 7 veins per leaflet. The vine has ridged ascending prickles and a characteristic twining to the left. ''D. dumetorum'' grows up onto shrubs and reaches heights of about 7 meters. The vines grow annually from the underground tubers. The tubers of ''D. dumetorum'' are deeply lobed and occur in clusters just below the surface of the soil. The flower of the bitter yam is brown. Male flowers are arranged in complex branched structures while female flowers are arranged in spikes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
