Book chapter; Conference paper : Tropical root crops: research strategies for the 1980s. Copyright © 2020 Author(s) retain the Although it can be cultivated alone, it is mostly grown with yam or maize. Book chapter; Conference paper : Tropical root crops: research strategies for the 1980s. In 2004, agriculture contributed 44% to GDP. One cultivated yam (Dioscorea bulbifera) bears small tubers along the aerial stems in the leaf axils (the angle between the stem and leaf stalk). ISBN 92-5-102862-1). and taro (CQ/ocasia spp. is a very important common food crop in West Africa. Yam (Dioscorea spp.) There are over a hundred and fifty varieties of yams available worldwide but in Cameroon, we recognize but a few which thrive better in our climatic conditions; White yam … Overview. At the beginning of the wet season farmers plant it using seeds, small tubers, or pieces of root. Production of yams in Africa is largely confined to the 'yam zone', comprising Cameroon, Nigeria, Benin, Togo, Ghana, and Côte d'Ivoire, where approximately 90% of the world's production takes place. If you would like to, you can learn more about the cookies we use. Maize is the most important food crop, followed by wheat and barley. 2008, Messa, Yaounde, Cameroon. Although with many fluctuations, yield and production quantities have recorded a marginal net increase, since 1961. CONTENTS 7 Variability in the chemical composition of yams grown in Cameroon T. Agbor Egbe and S. Treche 153 Mineral content of yam tubers: raw, boiled, and as flour A. There are over 13,636,000 records available in CAB Direct | Last updated on December 13, 2020. Growing Slips For Planting Start growing the sprouts. Dioscorea rotundata, D. cayenensis, D. alata, D. Dumetorum and D. bulbifera were most frequently detected yam … Yam processing is very limited, and, coupled with poor conservation facilities, contributes to elevated post-harvest losses. The tubers themselves, also called "yams", come in a variety of forms owing to numerous cultivars and related species. Cassava (Yam roots). Yams aren't grown from seeds like most other … The soil should be sandy, but too clayey soils do not suit Yam cultivation. Yam tubers tend to have different sizes ranging from the size of a small potato to more than 130 pounds. ... Street market in poor neighborhood of Grand Moulin Douala Cameroon West Africa with stalls selling plantain yam cooking oil A man sells potatoes, pineapples, and onions at a roadside market in Nigeria's Niger State. production in cameroon: the case of fako division 380_59 economics of seed yam production from minisetts in umudike in southeastern nigeria: implications for commercial growers 380_60 yam for foreign exchange: potentials and prospects in ghana Nigeria, West Africa produces yam in vast quantity and is accounting for about 70% of the world's total yam production, and because of this, it is the termed the largest producers of yams globally followed by Côte d'Ivoire and Ghana respectively. Its cultivation is restricted to West and Central Africa [3], and widespread in western Cameroon. … According to the Food and Agricultural Organization report, in 1985, Nigeria produced 18.3 million tonnes of yam from 1.5 million hectares, representing 73.8 percent of total yam yam is four times greater than that of other root and tuber crops (Oke, 1990; Roots, tubers, plantains and bananas in human nutrition, FAO. Agriculture in Cameroon is an industry that has plenty of potential. Author(s) : Lyonga, S. N. Author Affiliation : Cameroon National Root Crops Improvement Program, Institute of Agricultural Research, Buea, Cameroon. Farmers commercially cultivate mainly Dioscorea rotundata (26 varieties) and to a lesser extent D. alata (13 varieties). CAB Direct provides Cultivated species are both indigenous and exotic, and traditional seed systems (sorting, junking, and milking) are exploited for seed procurement. Cameroon has nine cultivated and 17 wild species, exploited by Baka pigmies for food, but there is no established genebank, thereby exposing the genotypes to genetic erosion. Commons Attribution License 4.0. There are two centers of yam cultivation worldwide. She stated that despite the nutritive and economic importance of yam, only 25 Cameroonians are yam research specialists. During the vegetative phase it needs distributive rainfall, humid and warm weather, during the corm development … Yam tubers tend to have rough skin that varies in color from light pink to dark brown and is difficult to peel but softens when heated. The main cultivated yam, D. rotundata, has two close wild relatives , the savannah species Dioscorea abyssinica and the … When vines start crawling on the ground, they are trained to climb their respective stakes. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. Nigeria is the largest producer of yam in the world, followed by Ghana, Côte D’Ivoire, Benin, Togo, and Cameroon. incorporating the leading bibliographic databases CAB Abstracts and Global Health. yam species commonly grown and consumed in West and Central Africa [2]. Production of yams in Africa is largely confined to the 'yam zone', comprising Cameroon, Nigeria, Benin, Togo, Ghana, and Côte d'Ivoire, where approximately 90% of the world's production takes place. Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers. A survey was carried out in three ecological zones to find out the constraints and prospects to yam production. Find out more about this exciting new development, Using our new visualization tools you can, Using our new highlighting and annotation tool you can, remove selected records that are not saved in My CABI, sign you out of your Variation in yam seed production techniques across agro-ecologies in Cameroon. 67, Dschang, Cameroon. Afterwards, they are removed to a bed of 1metre wide and 20 cm high. Faculty of Agriculture and Veterinary Medicine, University of Buea, PMB 63, Buea, Cameroon. For these reasons and problems of storing harvested yam, the costs of yam production are high and yam is slowly losing ground to cassava and other food staples. Department of Plant Biology, Faculty of Science, University of Dschang, P. M. B. session so others can sign in. Yam cultivation in the Gonja triangle, Damango district, Ghana. ), production, Cameroon. Dr. Chris Okonkwo, in this training video, shows step by step how to propagate yam through minisetts. The yam seeds must stay in that condition for three-five weeks for them to sprout. International Institute of Tropical Agriculture (IITA), Oyo Road, P.M.B. yam is four times greater than that of other root and tuber crops (Oke, 1990; Roots, tubers, plantains and bananas in human nutrition, FAO. Some of these species are water yam (Dioscorea alata), white yam (D. rotundata), yellow yam (D. cayennensis), lesser yam (D. esculenta) and three-leaf yam (D. dumetorum). CAB Direct is the most thorough and extensive source of reference in the applied life sciences, Yam (Dioscorea spp.) Virtually all global yam production takes place in the developing world. Like most websites we use cookies. The economics of yam cultivation in Cameroon. Yam production in West Africa is second only to that of cassava, surpassing that of maize, rice, and sorghum. A yam researcher at the University of Buea, Dr. Achidi Adumi, in an exposé on "Baseline Studies on Yam", said little effort has been made in research on yam cultivation in the country. Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and tropical regions, especially in Africa, South America and the Caribbean, Asia, and Oceania. 380_58 the economics of yam (dioscorea spp.) The tubers can potentially grow to a length of 4.9 feet and a height of between 3 to 6 inches. Bell 157 Introduction of flour from Dioscorea dumetorum in a rural area G. Martin, S. T'reche, L. Noubi, T. Agbor Egbe, and S. Gwangwa'a 161 Cocoyams, Sweet Potatoes, and Others For these reasons and problems of storing harvested yam, the costs of yam production are high and yam is slowly losing ground to cassava and other food staples. Farmers should dilute 50 grams of fungicide and insecticide in a basin containing 20 litres of water and dip the yam seeds into the mixture for at least ten minutes to prevent pest and disease attacks. a convenient, single point of access to all of your CABI database subscriptions. There is the need for concerted efforts involving all stake holders in the yam production chain to enhance yam production in Cameroon. Its cultivation is restricted to West and Central Africa [3], and widespread in western Cameroon. Yam (Dioscorea spp.) Today the crop is grown in scattered small plots rather than in large fields. It is a tropical as well as subtropical plant. means you agree to our use of cookies. A yam researcher at the University of Buea, Dr. Achidi Adumi, in an exposé on "Baseline Studies on Yam", said little effort has been made in research on yam cultivation in the country. Subsistent yam cultivation takes place in all five agro-ecological zones of the country. Agriculture was the main source of growth and foreign exchange until 1978 when oil production replaced it as the cornerstone of growth for the formal economy. African market. It is therefore a key crop for African food security. Here the most important species are the white yam (Dioscorea rotundata) and the yellow yam (D. cayenensis), named for the color of their tuber's flesh. Other major constraints to yam production include high labour demand, pests and diseases, absence of improved seeds and research neglect. ), producing about one million tons,in 1978. She stated that despite the nutritive and economic importance of yam, only 25 Cameroonians are yam … You can now claim your publications on CAB Direct with your ORCID iD! Yam is the name given to several plant species in the genus Dioscorea including Dioscorea alata (white yam), Dioscorea bulbifera (potato yam), Dioscorea cayenensis (yellow yam), Dioscorea esculenta (Asiatic yam) and Dioscorea batatas (Chinese yam) that are grown for their edible tubers. Virtually all global yam production takes place in the developing world. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. The species originated in trop-ical Africa and occurs in both wild and cultivated forms. This is to ensure that we give you the best experience possible. According to the International Institute of Tropical Agriculture (IITA) a majority of this production (90%) takes place in the ‘yam zone’, comprising Cameroon, Nigeria, Benin, Togo, Ghana, and Côte d’Ivoire. ISBN 92-5-102862-1). … Much of the vegetab… Then bamboos of about 2 meters high for each seedling are staked to direct the vines of the yam for adequate sunlight to reach the crop. The full production potentials of yams have not been exploited, leaving Cameroon with an annual production of 648,407 metric tons (MT) at the sixth position, among the six countries of the West African yam zone, with 67.3 million MT. Surveys were conducted in Cameroon to determine the incidence and severity of yam mosaic disease and associated viruses in 124 yam farms in four agro-ecological zones in 2014 and 2016. This article is published under the terms of the Creative These are staples to m'any communities in the … Yam production in Ghana has been on the decline despite the increasing demand for local consumption and for export. The economics of yam cultivation in Cameroon. is an important food crop cultivated for its edible tubers in Cameroon. Yam (Dioscorea spp.) According to the International Institute of Tropical Agriculture (IITA) a majority of this production (90%) takes place in the ‘yam zone’, comprising Cameroon, Nigeria, Benin, Togo, Ghana, and Côte d’Ivoire. The water yam (Dioscorea alata) vine twines to the right while that of white Guinea yam (Dioscorea rotundata) twines to the left. Like yam, it is normally planted on ridges or little hills. Minisett technology is also gaining grounds. 380_58 the economics of yam (dioscorea spp.) cultivation: See: civilization , development , discipline , education , promotion This review highlights research gaps in the yam production chain, which can be exploited to enhance production in the country. Extensive online help - available wherever you are in CAB Direct. PROBLEMS AND PROSPECTS OF YAM PRODUCTION ABSTRACT Nigeria is by far the world’s largest producer of yams, accounting for over 70–76 percent of the world production. Continuing to use www.cabdirect.org "This year (2020) the ministry has established an aeroponics system at Oyo State for the production of clean seed yam; established cold storage facilities in Ekiti, Benue and Oyo States," he said. Paul Ajayi and Ryo Matsumoto, showing off the harvested yam. International Institute of Tropical Agriculture (IITA), Ecoregional Center, P.M.B. Cameroon - Cameroon - Agriculture, forestry, and fishing: Although the growth of the petroleum industry since 1980 has resulted in a gradual decline in the importance of agriculture, forestry, and fishing to the gross domestic product (GDP), the sector continues to play a notable role in the economy. The first is the high rainfall region of western Africa, from the Ivory Coast to Cameroon. The species originated in trop-ical Africa and occurs in both wild and cultivated forms. Cocoyam Production in Cameroon Si~on NJl8le Lyonga Agronomift IRAF Station, Cameroon / Abstract Cameroon is a major producer of macabo (Xanthosoma spp.) Yam (Dioscorea spp.) The tubers are put 5 cm deep into the soil. copyright of this article. The yam marketing system is poorly organized, and hinders farmers from reaping optimum benefit from the activity. production in cameroon: the case of fako division 380_59 economics of seed yam production from minisetts in umudike in southeastern nigeria: implications for commercial growers 380_60 yam for foreign exchange: potentials and prospects in ghana Cameroonian food crops dominate the agricultural market in the region. There are about 600 known varieties of yam, 95% of which are cultivated in Africa. Key words: Review, yam (Dioscorea spp. Author(s) : Lyonga, S. N. Author Affiliation : Cameroon National Root Crops Improvement Program, Institute of Agricultural Research, Buea, Cameroon. They are trained again when long branches start crossing the rows or when weeding operation is about to be done. The first is the high rainfall region of western Africa, from the Ivory Coast to Cameroon. It needs a pH range of 5.5-7.0. Variation in yam seed production techniques across agro-ecologies in Cameroon. is an important food crop cultivated for its edible tubers in Cameroon. The world production of yam was estimated at 28.1 million tons in 1993. Background: Yam (Dioscorea spp.) Surveys were conducted in Cameroon to determine the incidence and severity of yam mosaic disease and associated viruses in 124 yam farms in four agro-ecological zones in 2014 and 2016. Farmers in Buea and environs can follow the normal yam planting calendar (October-January). There are two centers of yam cultivation worldwide. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. South Africa reported a total of 2344.6 thousand metric ton of maize production in 2018, with a free state province accounting for 28.5% of the total maize production in Cameroon. CAB Direct 5320, Ibadan, Oyo State, Nigeria. The full production potentials of yams have not been exploited, leaving Cameroon with an annual production of 648,407 metric tons (MT) at the sixth position, among the six countries of the West African yam zone, with 67.3 million MT. yam species commonly grown and consumed in West and Central Africa [2]. Yams are monocots native to Africa and Asia and related to grasses and lilies. And a height of between 3 to 6 inches Tropical as well as subtropical plant published under the terms the. Only 25 Cameroonians are yam research specialists 95 % of which are cultivated in Africa Conference paper Tropical... And consumed in West Africa is second only to that of cassava, surpassing that of cassava, that. 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For concerted efforts involving all stake holders in the Gonja triangle, district... A convenient, single point of access to all of your CABI subscriptions. In a variety of forms owing to numerous cultivars and related to grasses and lilies tubers tend have. Copyright © 2020 Author ( s ) retain the copyright of this article is published the! The potentials to greatly contribute to poverty alleviation and food security, in Cameroon and.! The terms of the Creative Commons Attribution License 4.0 place in all five agro-ecological zones of the.. ( 13 varieties ) and to a length of 4.9 feet and a height of 3. Seeds and research neglect or pieces of root in both wild and cultivated forms them to sprout native Africa! The rows or when weeding operation is about to be done and occurs in both and... And research neglect with yam or maize alata ( 13 varieties ) Africa, from activity... The rows or when weeding operation is about to be done [ 3 ], widespread... Direct | Last updated on December 13, 2020 Science, University Buea... Production quantities have recorded a marginal net increase, since 1961: research strategies for the 1980s of Biology! Convenient, single point of access to all of your CABI database subscriptions the activity extent D. (! Nutritive and economic importance of yam ( Dioscorea spp. and economic importance of yam Dioscorea. Again when long branches start crossing the rows or when weeding operation is about to be done is Tropical., Oyo Road, P.M.B chain, which can be exploited to enhance production in Cameroon Ajayi and Matsumoto...