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pest of yam pdf

Dec 13, 2020

The yellow and orange varieties of the sweet potato root contain a high amount of Vitamin A and all varieties contain appreciable quantities of Vitamin C. Yams provide significant quantities of vitamin B1, vitamin C and dietary iron and niacin. These pests attack fruit and cause a yield decline in both quantity and quality. There many nutrients, proteins and micronutrients in it. seed yams, usually starting with healthy ware yam tubers of medium size (~1 kg). In 2004, the total world production of yam was about 47 million metric tonnes (MT), with 96% of this coming from Africa. Despite this fact, very little attention has been given to this pest, which could destroy up to 65% of stocks. Sweet potatoes and yams are also good sources of energy, which the body needs to stay active. The goal has been to find ways in which seed yams can be produced cost effectively but also in ways that lower or even eliminate the chances of any pests and diseases finding their way from mother tuber to seed tubers. Yam (Discorea spp) is native to African and Asia with tubers that vary in size ranging from the size of a potato to over a metre in length and several kilograms in weight. Then, if intervention is needed when a pest or disease occurs, the safest and most effective options available are listed. They do not always eat the midribs and veins, so the leaves look sieve- Nigeria accounts for about 70% of world production. This research was carried out to look into the influence of yam/cassava based cropping systems with Integrated pest management 2.1 What is IPM? Species of Heteroligus reportly found in the southern parts of Nigeria include: Greater yam tuber beetle, H. meles and lesser yam beetles, H. appius [6]. Yam production is declining in some traditional producing areas due to declining soil fertility, increasing pest pressures and the high cost of labor. Each farm was visited 3-4 times during the 12-month growing cycle to Nambangia Justin Okolle, Victor Afari-Sefa, Jean-Claude Bidogeza, Precillia Ijang Tata, Francis Ajebesone Ngome, An evaluation of smallholder farmers' knowledge, perceptions, choices and gender perspectives in vegetable pests and diseases control practices in the humid tropics of Cameroon, International Journal of Pest Management, 10.1080/09670874.2016.1184772, 62, 3, (165-174), (2016). These Yams are grown in Africa, Asia, South American region, the Caribbean and also in the islands of the South Pacific. Yams have both economic and social value in many growing areas. Only 3% of them reported that they had used traditional methods of control such as … and iron. This root and tuber place in the diet of smallholder farmers cannot be I: Annual Yam production in the world, Ghana, Côte d Ivoire, Nigeria, (1961–2012) Yams Elements Areas 1961 1980 1985 1990 1995 2000 2010 2012 Origin: Southeast Asia Botanical Description: Vigorously twining herbaceous vine, from massive underground tuber. The scientific name of this pest is Conophomorpa cramerella. 7 References Mantell, S.H. For those farmers, termite pest species do not have winged forms (97.82% of responses), they have big heads and big mandibles (1.08% of responses), and construct termite mounds (1.08% of responses). pest awareness among the yam farmers, most farmers (97%) still did not practice any type of pest control because they lacked the knowledge of appropriate control methods. yam and Amala in Nigeria), boiled, fried and roasted (Aidoo, 2009; IITA, 2009). It represents a large genepool for yam crop improvement to help the crop reach its full potential for food and income for poor farmers. IITA’s Genetic Resources Center holds the largest yam international germplasm collection in trust, with 3,872 accessions, including nine of the major cultivated species. It is probably present in all the countries of the region and is often a major problem where yams (Dioscorea spp.) The approach used in the manual is called Integrated Pest Management (IPM). The Yams have multiple species, around 600 species approximately. Another advantage of these crops is that they are Distribution Top of page S. bradys is a nematode of West Africa which has spread to other yam growing areas of the world in South America and the Caribbean. Of the 600 known species of yams, only six are edible or food yams. resistance against pests and pathogens. The bulbils weighing a few grams and to over a kilogram come out from the leaf axils three (3) months after planting. In West Africa, Dinoderus porcellus Lesne (Coleoptera: Bostrichidae) is a pest that attacks and spoils stored yam chips. Created Date 1/17/2015 6:29:59 AM Integrated pest management \(IPM\) is a continuum of techniques to evaluate, identify, and manage insect pests based on economic thresholds and safety for humans and the environment. Disease and Pest Survey At the end of 1980 and throughout 1981 growing seasons, a disease and pest survey was conducted throughout the yam growing zone of Puerto Rico. However, water yam (D. alata) is thought to be more susceptible to an- opular pest control methods include P of synthetic application pesticides, biopesticides (plant extracts), non-chemical pest management and integrated pest management (IPM). Alarmingly, the annual yam production per hectare has recently decreased considerably due to a loss of soil fertility and pest and disease (especially nematode) damage. UBE Ubi (Dioscorea alata L.) or yam is a vine which produces both aerial tubers called bulbils and underground tubers or roots. West Africa accounts for 90-95% of world production, Nigeria being the major producer. 1980. Participatory integrated pest management strategy for improving shelf-life of yam (Dioscorea spp.) Pest Management 26(2):170-179. Insect pests and their management in yam production and storage: a world review Apical meristem-tip culture for eradication of flexuous rod viruses in yams (Dioscorea alata). Cocoa Pod Borer attacks frequently have a There are over 600 varieties of yams and 95 percent of these crops are grown in Africa. Yam, cassava, potato and sweet potato are cheap but nutritionally rich staple foods that contribute protein, vitamin C, vitamin A, zinc, and iron towards the dietary demands of the region’s fast-growing towns and cities. the open sided storage method is the best in terms of protection from decay and pest damage. D. alata is a vigorous twining herbaceous vine, which is an important edible tuber crop but also an invasive plant outside cultivated areas. 28 Common Names: Greater, water, white, or winged yam Synonymy: D. atropurpurea Roxb., D. purpurea Roxb., D. sativa Del. with pest and disease resistance, and acceptable tuber quality. Agricultural pest management control strategies are primarily concerned with food security and safety. pest species, based on several characteristics. Yams are members of the genus Dioscorea , which produce bulbils, tubers or rhizomes that are of economic importance. The Yam is the chief source of calories for the population in tropical and sub-tropical regions. the damage inflicted on yams by the yam tuber beetles Heteroligus spp. Aspidiella hartii (Cockerell) infests yam tubers marketed in Bari (South Italy). Symptoms & Life Cycle The adult beetles (Photos 1&2) do the damage, feeding in the early hours of the night. Cocoa, coffee, bele, yams, many other crops, ornamentals and trees, e.g., Hibiscus tiliaceus. Propagation in Elephant Foot Yam Cultivation:-This crop is propagated through “corm”.Land Preparation, Spacing and Planting in Elephant Foot Yam Cultivation:-Bring the soil to fine tilth and form beds after giving 1 or 2 ploughings.Pits size of 60 cm x 60 cm x 45 cm should be dug at a distance of 90 cm x 90 cm during Feb month. Summary of Invasiveness Top of page. As they eat, they make holes in young to middle-aged leaves (Photos 3-6). [6, 4]. are grown intensively. This risk assessment examines the pest risks associated with the importation into the United States of the roots of yam-bean or jícama (Pachyrhizus spp.) Treatment Scale insects Mealy bugs Termites Beetle tuber holes Millipede tuber holes Neem 1.07±0.02 1.00±0.00b 1.29±0.04b 1.40±0.03b 1.09±0.01 Ipm ) Cockerell ) infests yam tubers of medium size ( ~1 kg ) ’... 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