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Registros recuperados: 4
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Biological control of water hyacinth on Lake Victoria, Kenya OceanDocs
Ochiel, G.R.S.; Mailu, A.M.; Gitonga, W.; Njoka, S.W..
The Kenya Agricultural Research Institute (KARI) imported 12 800 curculionid weevils (Neochetina spp.) from Benin, Uganda, South Africa and Australia for biological control of water hyacinth between 1993 and1998. In 1996, KARI’s rearing and quarantine facility at the National Agricultural Research Centre, Muguga, provided initial “breeding stock” to another rearing facility at the National Fibre Research Centre, Kibos, near Lake Victoria. To date, 36 500 weevils and 42 000 weevil eggs have been produced from Kibos. About 2000 weevils were produced each month from plants grown in plastic basins, galvanized corrugated iron sheet tanks and a polypropylene rearing pool. Between January 1997 and August 1998, KARI released 36 250 Neochetina weevils at 27 sites...
Tipo: Proceedings Paper Palavras-chave: AQUATIC WEEDS; HYACINTH; BIOLOGICAL CONTROL; LAKE VICTORIA; KENYA Freshwater plants Aquatic weeds Water hyacinth http://aims.fao.org/aos/agrovoc/c_15267.
Ano: 1998 URL: http://hdl.handle.net/1834/1275
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Establishment, spread and impact of Neochetina spp. weevils (Coleoptera: Curculionidae) on Water Hyacinth in Lake Victoria, Kenya OceanDocs
Njoka, S.W.; Ochiel, G.S.; Mailu, A.M.; Gitonga, W..
The Kenya Agricultural Research Institute imported 12,300 curculionid weevils (Neochetina spp.) from diverse sources, for biological control of water hyacinth in Lake Victoria, as part of the World Bank-funded Lake Victoria Environmental Management Project in East Africa. In addition to the rearing and quarantine facility at Muguga, a second rearing facility was established in 1996 at Kibos, near Lake Victoria. The Kibos rearing facility and two community rearing facilities at the lakeshores, have produced approximately 100,000 adult weevils and 42,000 weevil eggs over a three-year period. Since January 1997, some 73,500 Neochetina weevils have been released at 29 sites and an additional 10,000 redistributed at several sites. Visual observations and...
Tipo: Proceedings Paper Palavras-chave: Environmental conditions; Environmental effects; Environmental protection; Inland waters; Biological control; Environmental conditions; Environmental protection; Inland waters; Water hyacinth; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_15898; Http://aims.fao.org/aos/agrovoc/c_3876; Http://aims.fao.org/aos/agrovoc/c_15267.
Ano: 2001 URL: http://hdl.handle.net/1834/1283
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Preliminary assessment of the cocial, economic and environmental impacts of Water Hyacinth in Lake Victoria basin and status of control OceanDocs
Mailu, A.M..
The paper presents preliminary data collected in an assessment of the social, economic and environmental impacts of water hyacinth in the Lake Victoria Basin. A summary of the status of control and strategies for the future is given. The report draws on field observations made, studies through interviews of affected communities and organisations, personal communications and published reports by scientists in the region. Lake Victoria, the world’s second largest freshwater body, supports an estimated 25 million people living in the Basin, with an estimated gross economic product of US$3–4 billion annually, mainly from subsistence agriculture and fishing in Kenya, Uganda, Tanzania, and parts of Rwanda and Burundi. The multiple activities in the Lake Victoria...
Tipo: Proceedings Paper Palavras-chave: Environmental conditions; Environmental factors; Environmental impact; Environmental protection; Freshwater pollution; Resource management; Environmental factors; Environmental impact; Environmental conditions; Environmental protection; Resource management; Http://aims.fao.org/aos/agrovoc/c_2594; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_15898; Http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2001 URL: http://hdl.handle.net/1834/1292
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Water hyacinth: an environmental disaster in the Winam Gulf of Lake Victoria and its control OceanDocs
Ochiel, G.R.S.; Mailu, A.M.; Gitonga, W.; Njoka, S.W..
Water hyacinth has in the recent past had an adverse socio-economic impact on the lakeshore communities of Lake Victoria, particularly in the Winam Gulf. Fishing, lake transport and water supply have been seriously affected by the water hyacinth. KARI’s efforts at mitigating this disaster have so far been in the form of a twopronged management strategy consisting of physical and biological measures. The local administration has been involved in mobilizing the local communities to remove water hyacinth manually at strategic sites. However, there have been a number of constraints, mainly community attitudes to self-help activities. The Kenya Industrial Research and Development Institute (KIRDI) has developed a prototype mechanical harvester in a KARI-funded...
Tipo: Proceedings Paper Palavras-chave: Winam Gulf; Lake Victoria Environmental conditions Environmental effects Environmental impact Environmental protection Resource management Socioeconomic aspects Environmental impact Environmental conditions Environmental protection Resource management http://aims.fao.org/aos/agrovoc/c_24420 http://aims.fao.org/aos/agrovoc/c_32980 http://aims.fao.org/aos/agrovoc/c_15898 http://aims.fao.org/aos/agrovoc/c_6524.
Ano: 2000 URL: http://hdl.handle.net/1834/1281
Registros recuperados: 4
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