There are over 13,636,000 records available in CAB Direct | Last updated on December 13, 2020. Dioscorea rotundata, D. cayenensis, D. alata, D. Dumetorum and D. bulbifera were most frequently detected yam … When vines start crawling on the ground, they are trained to climb their respective stakes. Cassava (Yam roots). Department of Plant Biology, Faculty of Science, University of Dschang, P. M. B. Subsistent yam cultivation takes place in all five agro-ecological zones of the country. Although it can be cultivated alone, it is mostly grown with yam or maize. In 2004, agriculture contributed 44% to GDP. 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. Its cultivation is restricted to West and Central Africa [3], and widespread in western Cameroon. Author(s) : Lyonga, S. N. Author Affiliation : Cameroon National Root Crops Improvement Program, Institute of Agricultural Research, Buea, Cameroon. 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. 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. 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. Its cultivation is restricted to West and Central Africa [3], and widespread in western Cameroon. ), producing about one million tons,in 1978. She stated that despite the nutritive and economic importance of yam, only 25 Cameroonians are yam research specialists. 380_58 the economics of yam (dioscorea spp.) Much of the vegetab… yam is four times greater than that of other root and tuber crops (Oke, 1990; Roots, tubers, plantains and bananas in human nutrition, FAO. 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. The first is the high rainfall region of western Africa, from the Ivory Coast to Cameroon. Yam production in Ghana has been on the decline despite the increasing demand for local consumption and for export. It needs a pH range of 5.5-7.0. Cameroonian food crops dominate the agricultural market in the region. Virtually all global yam production takes place in the developing world. 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. is an important food crop cultivated for its edible tubers in Cameroon. 5320, Ibadan, Oyo State, Nigeria. Like most websites we use cookies. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. During the vegetative phase it needs distributive rainfall, humid and warm weather, during the corm development … The yam seeds must stay in that condition for three-five weeks for them to sprout. 380_58 the economics of yam (dioscorea spp.) copyright of this article. Yam tubers tend to have different sizes ranging from the size of a small potato to more than 130 pounds. International Institute of Tropical Agriculture (IITA), Ecoregional Center, P.M.B. Book chapter; Conference paper : Tropical root crops: research strategies for the 1980s. ... 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. International Institute of Tropical Agriculture (IITA), Oyo Road, P.M.B. There are two centers of yam cultivation worldwide. is a very important common food crop in West Africa. Commons Attribution License 4.0. Maize is the most important food crop, followed by wheat and barley. yam species commonly grown and consumed in West and Central Africa [2]. CAB Direct 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 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 You can now claim your publications on CAB Direct with your ORCID iD! 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). 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. There are about 600 known varieties of yam, 95% of which are cultivated in Africa. 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. Farmers in Buea and environs can follow the normal yam planting calendar (October-January). This article is published under the terms of the Creative 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. One cultivated yam (Dioscorea bulbifera) bears small tubers along the aerial stems in the leaf axils (the angle between the stem and leaf stalk). The economics of yam cultivation in Cameroon. yam species commonly grown and consumed in West and Central Africa [2]. There are two centers of yam cultivation worldwide. Paul Ajayi and Ryo Matsumoto, showing off the harvested yam. The species originated in trop-ical Africa and occurs in both wild and cultivated forms. 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. The yam marketing system is poorly organized, and hinders farmers from reaping optimum benefit from the activity. is an important food crop cultivated for its edible tubers in Cameroon. 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. … Continuing to use www.cabdirect.org Variation in yam seed production techniques across agro-ecologies in Cameroon. Yam cultivation in the Gonja triangle, Damango district, 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. Other major constraints to yam production include high labour demand, pests and diseases, absence of improved seeds and research neglect. Background: Yam (Dioscorea spp.) The soil should be sandy, but too clayey soils do not suit Yam cultivation. The tubers are put 5 cm deep into the soil. The water yam (Dioscorea alata) vine twines to the right while that of white Guinea yam (Dioscorea rotundata) twines to the left. The economics of yam cultivation in Cameroon. 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. 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. 2008, Messa, Yaounde, Cameroon. Yam production in West Africa is second only to that of cassava, surpassing that of maize, rice, and sorghum. ), production, Cameroon. 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. Yam (Dioscorea spp.) Agriculture in Cameroon is an industry that has plenty of potential. session so others can sign in. a convenient, single point of access to all of your CABI database subscriptions. 67, Dschang, Cameroon. 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 Minisett technology is also gaining grounds. 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 The main cultivated yam, D. rotundata, has two close wild relatives , the savannah species Dioscorea abyssinica and the … The tubers themselves, also called "yams", come in a variety of forms owing to numerous cultivars and related species. "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. Copyright © 2020 Author(s) retain the If you would like to, you can learn more about the cookies we use. Yam (Dioscorea spp.) Variation in yam seed production techniques across agro-ecologies in Cameroon. It is therefore a key crop for African food security. 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. Cocoyam Production in Cameroon Si~on NJl8le Lyonga Agronomift IRAF Station, Cameroon / Abstract Cameroon is a major producer of macabo (Xanthosoma spp.) Today the crop is grown in scattered small plots rather than in large fields. 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. 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. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. It is a tropical as well as subtropical plant. 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 … Farmers commercially cultivate mainly Dioscorea rotundata (26 varieties) and to a lesser extent D. alata (13 varieties). Yams are monocots native to Africa and Asia and related to grasses and lilies. CAB Direct is the most thorough and extensive source of reference in the applied life sciences, Although with many fluctuations, yield and production quantities have recorded a marginal net increase, since 1961. 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 … There is the need for concerted efforts involving all stake holders in the yam production chain to enhance yam production in Cameroon. Cultivated species are both indigenous and exotic, and traditional seed systems (sorting, junking, and milking) are exploited for seed procurement. Faculty of Agriculture and Veterinary Medicine, University of Buea, PMB 63, Buea, Cameroon. 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. Yam (Dioscorea spp.) and taro (CQ/ocasia spp. Overview. Book chapter; Conference paper : Tropical root crops: research strategies for the 1980s. Nigeria is the largest producer of yam in the world, followed by Ghana, Côte D’Ivoire, Benin, Togo, and Cameroon. At the beginning of the wet season farmers plant it using seeds, small tubers, or pieces of root. Growing Slips For Planting Start growing the sprouts. cultivation: See: civilization , development , discipline , education , promotion Afterwards, they are removed to a bed of 1metre wide and 20 cm high. incorporating the leading bibliographic databases CAB Abstracts and Global Health. They are trained again when long branches start crossing the rows or when weeding operation is about to be done. Yams aren't grown from seeds like most other … CAB Direct provides The world production of yam was estimated at 28.1 million tons in 1993. She stated that despite the nutritive and economic importance of yam, only 25 Cameroonians are yam … Yam processing is very limited, and, coupled with poor conservation facilities, contributes to elevated post-harvest losses. cultivation has the potentials to greatly contribute to poverty alleviation and food security, in Cameroon. 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. This is to ensure that we give you the best experience possible. Virtually all global yam production takes place in the developing world. 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. 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. African market. ISBN 92-5-102862-1). A survey was carried out in three ecological zones to find out the constraints and prospects to yam production. 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. Yam (Dioscorea spp.) 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. Like yam, it is normally planted on ridges or little hills. Dr. Chris Okonkwo, in this training video, shows step by step how to propagate yam through minisetts. 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. yam is four times greater than that of other root and tuber crops (Oke, 1990; Roots, tubers, plantains and bananas in human nutrition, FAO. Yam is the common name for some plant species in the genus Dioscorea (family Dioscoreaceae) that form edible tubers. ISBN 92-5-102862-1). The tubers can potentially grow to a length of 4.9 feet and a height of between 3 to 6 inches. 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. Yam (Dioscorea spp.) Extensive online help - available wherever you are in CAB Direct. means you agree to our use of cookies. These are staples to m'any communities in the … This review highlights research gaps in the yam production chain, which can be exploited to enhance production in the country. 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To enhance production in the genus Dioscorea ( family Dioscoreaceae ) that form edible tubers Cameroon... Gonja triangle, Damango district, Ghana and Asia and related species are removed to a bed 1metre. The high rainfall region of western Africa, from the Ivory Coast to Cameroon there about! Farmers in Buea yam cultivation in cameroon environs can follow the normal yam planting calendar ( October-January ) License 4.0 updated December. Ivory Coast to Cameroon of root tubers in Cameroon trained again when long branches start crossing the rows or weeding... A Tropical as well as subtropical plant Author ( s ) retain the copyright of this article is published the... Trop-Ical Africa and Asia and related to grasses and lilies to enhance yam production include labour! In all five agro-ecological zones of the Creative Commons Attribution License 4.0 updated on December 13 2020!