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Conference Documents: Recent submissions
Now showing items 401-420 of 726
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Determinants de ladoption des technologies de transformation de ligname: cas de la transformation en cossettes et en farine au nord de la Cote Divoire
(2009)Cet Journal Article propose une analyse empirique de l’adoption des technologies de transformation de l’igname. L’étude, qui est l’une des rares analyse dans le domaine de l’igname à s’intéresser à l’adoption des procédés de transformation, explore les liens entre les caractéristiques sociales, culturelles et professionnelles des paysans et l’adoption des technologies de transformation. Son objectif principal est d’identifier les déterminants de l’adoption de la technologie de ... -
An assessment of the potential efficiency and profitability of valueaddition and marketing innovations involving smallholder farmers under a pilot system in Tanzania
(2009)An assessment of four pilot processing centers in Tanzania, established for processing cassava to high quality cassava flour, chips and starch based on IITA technologies was carried out from 2003 to 2005. We followed the value chain analysis approach, looking in detail at processing efficiency and relating it to market dynamics in particular of the fresh cassava or raw material market. Locations with large volumes of fresh cassava were found to be very favorable for such enterprises, as prices are ... -
The role of community based organisations' NGOs and farmers in technology transfer
(International Society For Tropical Root Crops, 2007)Cassava (Manihot esculenta Crantz) and sweetpotato (Ipomoea batatas) are key food crops in Tanzania in general and in the lake zone in particular. Cassava and sweetpotato are household food security crops in addition to being a source of household income. Availability of the new improved varieties to farmers has been a problem in Tanzania. A project was initiated to transfer improved varieties of both cassava and sweetpotato in the lake zone to farmers. In collaboration with community-based ... -
Changes in population abundance of the African root and tuber scale stictococcus vayssierei Richard (hornoptera; stictococcidae) on cassava in the bas-fleuve district in the democratic Republic of Congo
(International Society For Tropical Root Crops-Africa Branch, 2007)A two year follow up of the African root and tuber scale (ARTS) population dynamics was conducted on two cassava cultivars, a sweet variety Lueki and a bitter variety Mvuama, in a highly infested site of secondary agro-ecological forest zone of Bas-Flueve District, in D.R. Congo. Both cultivars were infested throughout the period of the observations, but significantly higher populations (P< 0.01) occurred on the sweet variety Lueki while the bitter variety Mvuama harboured less scales. Three ... -
The spread and persistence of exotic phytoseiid, typhlodromahs aripo de leon (acari: phytoseiidae) and its effect on cassava green mite in Kenya
(International Society For Tropical Root Crops-Africa Branch, 2007)Cassava green mite, Mononychellus tanajoa (Bondar) has been a major pest of cassava since its accidental introduction in Africa. Studies conducted recently on its biological control in the major cassava growing areas in Kenya demonstrate definite establishment of Typhlodromalus aripo in Kenya. This exotic predatory mite was not only found to have established and persisted since its introduction in 199516, but have also over the years spread widely to far distant from the original release sites in ... -
Effect of different cowpea - cereal row to row planting systems and insecticide sprays of cowpea on the quality of the crop residues
(African Crop Science Society, 2007)A cropping system trial involving 2 spray treatments, 2 cowpea varieties, and 9 cowpea–cereals cropping patterns involving two cereals was conducted in 1999 and 2000 cropping seasons in Minjibir. The systems involved different row to row combinations of cowpea and millet or sorghum. Selected nutritive qualities of resulting cowpea and cereal stover were measured. Spraying of cowpea had no significant effect on the nutritive value of the cowpea fodder and accompanying cereal stalk. ... -
Modern approaches for cowpea breeding: how highthroughput genotyping and a highdensity map change everything
(2012-9)The genomics revolution has enabled rapid advances in genotyping capabilities and construction of high-density genetic linkage maps that enable new plant breeding strategies which have the potential to expedite delivery of improved crop varieties. These breeding strategies utilize molecular marker information at hundreds to thousands of points in the genome, encompassing selection for multiple traits and/or multigenic traits. This chapter summarizes the opportunities and challenges ... -
Financing, handling, hardening and marketing of tissue culturederived planting material through nurseries: the case of banana and plantain in Kenya, Uganda and Burundi
(2009)The distribution of contaminated planting material (suckers) remains a major cause of spread of pests and diseases in banana. A traditional subsistence staple in East Africa, banana is becoming increasingly a commercialized commodity in the region. Essential for effective commercialization of this crop, however, is the supply and use of uniform and healthy planting material. Tissue culture (TC) technology can help provide this. However, TC plantlets are delicate and require substantially greater ... -
Effect of periodic vine pruning on the carotenoid profile of Umuspo 3 orange-fleshed sweet potato variety
(Nigerian Institute of Food Science and Technology, 2017) -
Rejuvenating the Nigerian economy through promotion of the food value chain
(Nigerian Institute of Food Science and Technology, 2017) -
Consumer's acceptability and willingness-to-pay for composite bread baked with high quality cassava flour from yellow-fleshed cassava roots
(Nigerian Institute of Food Science and Technology, 2017) -
Screening of new improved water yam (Dioscorea alata) genotypes for the preparation of amala in Nigeria
(International Institute of Tropical Agriculture, 2010)Production of improved water yam (Dioscorea alata) genotypes that are suitable for the preparation of amala (a popular darkish Nigerian food) would likely enhance the economic importance of the crop in Nigeria. Fermented flour (oven dried and sun dried) made from tubers of eight new improved D.alata genotypes (TDa 00/00364, TDa 00/00194, TDa 00/00103, TDa 00/00104, 99/00240, 99/01176, 98/01166, Um 680) and two landraces (TDa 92-2, Ominelu) were reconstituted into amala, and organoleptically ... -
Evaluation and delivery of disease resistant cassava varieties with comparable micronutrient density to farmers in Cameroon
(International Institute of Tropical Agriculture, 2010)Cassava (Manihot esculenta Crantz) is one of the most important staple food crops of the people in Cameroon, with some estimated 204,548 hectares devoted to it and corresponding annual production of 1,998,819 metric tons. It plays a major role in efforts to alleviate food crisis due to its efficient production of food energy, year-round availability, tolerance to extreme stress conditions, and suitability to present farming and food systems. Traditionally, cassava roots are processed by various ... -
Fabrication and testing of the pulverizer for starch extraction from cassava in Malawi
(International Institute of Tropical Agriculture, 2010)A cassava pulverizer was fabricated and tested for starch extraction from cassava at Masinda Cassava Starch Cooperative Society in Malawi. When tested, the pulverizer increased the starch extraction percentage from cassava by 16.9% as compared to grating only and it showed that these results were significantly different (P<0.05) from the starch extraction from grating only. Given the current starch extraction rate of 18%, a 16.9% increase in the rate when the pulverizer is used represents a three ... -
Importance of orange-fleshed sweetpotato cultivars in Malawi: a consolidation of morphological, organoleptic and beta-carotene analysis
(International Institute of Tropical Agriculture, 2010)In order to better understand farmers’ sweetpotato varieties grown in Malawi for subsequent improvement and effective contribution of agricultural research to livelihood, a study which involved germplasm collection and indigenous knowledge documentation survey in 2003 in Chikwawa and Nsanje Districts of the Shire Valley where vitamin A deficiency is prevalent was conducted. A total of 115 accessions were collected and planted at Bvumbwe Research Station in 2004 and 2005 seasons for morphological ... -
Farmers access to agricultural inputs and services in Nigeria: panacea to competitive and sustainable cassava production and agro-enterprise development
(International Institute of Tropical Agriculture, 2010)The critical role that agricultural inputs play in the modernization and competitiveness of the agriculture sector cannot be overemphasized. Inputs that have been identified as critical to commercial cassava enterprise include fertilizer, tractor hiring services, fabricators of various equipment for processing raw materials, credit support, crop protection products (Agrochemicals) and processors of these products. The principal emphasis of the cassava enterprise development project (CEDP) in Nigeria ... -
Enhancing seed yam supply systems in West Africa
(International Institute of Tropical Agriculture, 2010)Seed yams are an essential input into the Dioscorea yam economy of West Africa. Till date, the agronomic separation of seed yam production from that of ware tuber production for food has not been fully achieved. ‘Milking’ of food tubers to get seed yam continues as a dominant channel of seed yam supply. Adoption studies indicate the lack of total acceptance of the various suggested procedures for obtaining seed yams by farmers. The relationship of biological feasibilities and economically profitable ... -
Competitiveness of cassava-based ethanol production in Southern Africa: a case of Angola, Malawi, Mozambique, South Africa and Zambia
(International Institute of Tropical Agriculture, 2010)Whereas the global economy has from time immemorial depended on fossil fuels, technological innovations are steadily paving ways to relieve pressure from the dwindling resources and combat the environmental consequences that come along with oil extraction and use. Production and use of bio-fuels such as ethanol and bio-diesel are among such innovations that are attracting attention both in developed and developing economies. Although Africa is the largest producer of cassava on the globe, the ...
