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| Registros recuperados: 327 | |
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| CEREDA,M. P.; MATTOS,M.C.Y.. |
| Cassava is a widely grown root crop which accumulates two cyanogenic glucosides, linamarin and lotaustralin. Linamarin accounts for more than 80% of the cassava cyanogenic glucosides. It is a ß-glucoside of acetone cyanohydrin and ethyl-methyl-ketone-cyanohydrin. Linamarin ß-linkage can only be broken under high pressure, high temperature and use of mineral acids, while its enzymatic break occurs easily. Linamarase, an endogenous cassava enzyme, can break this ß-linkage. The enzymatic reaction occurs under optimum conditions at 25ºC, at pH 5.5 to 6.0. Linamarin is present in all parts of the cassava plant, being more concentrated on the root and leaves. If the enzyme and substrate are joined, a good detoxification can occur. All the cassava plant species... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cyanide; Cassava; Linamarin; Cyanogenic glucoside; Residues; Waste water; Culinary and industrial uses. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79301996000100002 |
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| BADEJO,MOSADOLUWA ADETOLA; OLA-ADAMS,BUNY AMIN. |
| Soil samples were collected from the top 7.5 cm of soil in a Strict Natural Reserve (SNR), a surrounding buffer zone, a cassava farm and matured plantations of Gmelina, teak, and pine, so as to determine if plantation establishment and intensive cultivation affect the density and diversity of soil mites. Altogether, 41 taxonomic groups of mites were identified. The diversity and densities of mites in within the SNR, the buffer zone and the Gmelina were more than the diversity and densities in the cassava farm, teak and pine plantations. Each plantation had its own unique community structure which was different from the community structure in the SNR plot. The SNR plot and Gmelina were dominated by detritivorous cryptostigmatid mites unlike teak and pine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava; Gmelina; Plantations; Soil fauna; Intensive farming. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001100001 |
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| Costa,N.V.; Ritter,L.; Peres,E.J.L.; Silva,P.V.; Vasconcelos,E.S.. |
| This study aimed to determine the periods of weed interference in the first cycle of 'Fécula Branca' cassava. The experiment was arranged in a randomized block design, with four repetitions. The treatments consisted of eight periods of weed control (25, 50, 75, 100, 125, 150, and 175 days after planting - DAP) and eight periods of coexistence between the weed community and the crop (25, 50, 75, 100, 125, 150, and 175), besides control without weeds and control with weeds until harvest (322 DAP). The predominant weed species with higher relative importance were: Avena sativa, Sorghum halepense, Conyza Canadensis, Euphorbia heterophylla, Raphanus raphanistrum, and Commelina benghalensis. It was concluded that, accepting losses of 1% for root and starch... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cassava; Manihot esculenta; Weed interference; WEEPPEL. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300005 |
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| Rudi, Nderim; Norton, George W.; Alwang, Jeffrey Roger; Asumugha, Godwin N.. |
| Marker-assisted breeding could have a major impact in relieving productivity constraints that cannot as easily or rapidly be relieved by conventional breeding alone. This paper estimates the benefits of using marker-assisted breeding, as compared to conventional breeding alone, in developing cassava varieties resistant to cassava mosaic disease, green mite, whitefly and post-harvest physiological deterioration in Nigeria, Ghana and Uganda. Marker-assisted breeding is estimated to save at least four years in the breeding cycle for varieties resistant to the pests and to result in incremental net benefits over 25 years in the range of $34 to $800 million depending on the country, the particular constraint and various assumptions. Benefits may reach as high... |
| Tipo: Journal Article |
Palavras-chave: Marker-assisted breeding; Impact assessment; Cassava; Green mite; Whitefly; Cassava mosaic disease; Post-harvest physiological deterioration; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/93862 |
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| Ogundari, Kolawole; Brümmer, Bernhard. |
| In this study, we estimate an output distance function in the context of a multi-output and multi-input production technology by stochastic frontier techniques. Unbalanced panel data for smallholder farms that grown cassava and other crops in Southwestern Nigeria covering 2006/07 to 2008/09 farming seasons is used for the analysis. The results show that the marginal rate of transformation (MRT) between “other crops” grown by the farmers and cassava produced relative to the output mix is negative and significantly different from zero. We observed also that increasing returns-to-scale as well as technical progress characterized cassava production in the region. Furthermore, fertilizer and pesticides are found to have significant substitution effects on... |
| Tipo: Journal Article |
Palavras-chave: Cassava; Technical efficiency; Inputs substitution; Complementary effects; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/95773 |
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| Haggblade, Steven; Nyembe, Misheck. |
| Cassava production has grown rapidly in Zambia since the early 1990’s. Available evidence suggests that volumes of traded cassava have been increasing roughly twice as fast as production. Yet this cassava production boom could stall unless commercial markets for it develop. To help accelerate commercial development of cassava and cassava-based products at the national level, Zambia’s Agricultural Consultative Forum (ACF) initiated an Acceleration of Cassava Utilization (ACU) Task Force, beginning in August 2005. At a regional level, efforts such as the Cassava Transformation in Southern Africa (CATISA) project aim to complement national efforts and help facilitate regional spillovers, so that new products, new technologies or new lessons can help to... |
| Tipo: Report |
Palavras-chave: Food security; Policy; Zambia; Africa; Cassava; Agribusiness; Crop Production/Industries; Q18. |
| Ano: 2008 |
URL: http://purl.umn.edu/54491 |
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| Chitundu, Maureen; Droppelmann, Klaus; Haggblade, Steven. |
| Smallholder farmers operate in vertical supply chains. Therefore, an understanding of key opportunities and constraints up through the value chain becomes necessary for sustaining smallholder growth. Yet market analysis is of little value unless key private and public sector stakeholders agree to implement necessary reforms. This paper advocates an approach which marries together value chain analysis with a stakeholder taskforce to ensure that analysis of opportunities and constraints gets translated into actions that will facilitate commercial growth. Using Zambia’s cassava task force as an example, the paper describes the value chain task force method and identifies elements critical to its effective implementation. |
| Tipo: Report |
Palavras-chave: Food security; Food policy; Cassava; Value chain; Task force; Zambia; Africa; Crop Production/Industries; Q18. |
| Ano: 2006 |
URL: http://purl.umn.edu/54480 |
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| Gonzalez, Carolina; Johnson, Nancy L.. |
| Cassava is a major source of carbohydrate for populations in the tropics; however, there is little information about the preferences of consumers toward the quality characteristics of this crop. This paper analyzes the demand for different cassava attributes, and applies the hedonic price method to estimate the values that consumers give to implicit attributes of cassava. The results show that ease of peeling, time of cooking and texture of cassava are the most important characteristics consumers consider when purchasing and consuming cassava. Cassava varieties, root size, ease of peeling and location of the market are relevant attributes in price determination. |
| Tipo: Journal Article |
Palavras-chave: Cassava; Consumer preferences; Hedonic price; Northeast of Brazil; Consumer/Household Economics. |
| Ano: 2009 |
URL: http://purl.umn.edu/94839 |
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| Souza, Emerson Finger de; Staduto, Jefferson Andronio Ramundo; Freire Junior, Weimar da Rocha; Rinaldi, Rubia Nara. |
| The study presents an analysis of the coordination between the cassava's producers and the cassava's processors industry located in the west of State of Parana (Brazil). In a few years this chain became dynamics because of many factors, such as the institutional that is the most important one. In the last years it was verified a large volatility in cassava's production and price, that compromised the chain performance, mainly the cassava's starch modified production and price, which has high aggregate value. One of this oscillations cause, among other reasons was the lack of coordination between agents. To find evidences and solutions to the studies answers, the new institutional economy approach was studied. Three cassava's starch industries were analyzed... |
| Tipo: Journal Article |
Palavras-chave: Cassava; Agribusiness; Contract.; Crop Production/Industries; Agribusiness. |
| Ano: 2005 |
URL: http://purl.umn.edu/43987 |
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| Trautenmüller,H; Broch,J; Pires Filho,IC; Silva,IM; Frank,R; Schöne,RA; Carvalho,PLO; Eyng,C; Nunes,RV. |
| ABSTRACT The objective of this study was to evaluate the energetic values of dry residue of cassava (DRC) and the effects of its inclusion in broiler diets on performance, intestinal morphometry, protein and fat deposition rate, and carcass and cut yields. In experiment I, two metabolism trials were carried out from 11-21 and from 31-41 days of age. The birds were distributed in a completely randomized design and DRC was included at levels of 10, 20, 30 and 40% in the basal diet. In experiment II, 980 male chicks were distributed in a completely randomized design with seven treatments (0; 2; 4; 6; 8; 10; 12% DRC) and seven replicates. DRC levels did not influence (p>0.05) the energetic values. From days 1-7, weight gain (WG) had a linear adjustment, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry farming; Co-product; Cassava; Intestinal morphometry. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400303 |
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| Oliveira,Natália Trajano de; Uchôa,Sandra Catia Pereira; Alves,José Maria Arcanjo; Albuquerque,José de Anchieta Alves de; Rodrigues,Guilherme Silva. |
| ABSTRACT Nitrogen is considered the most limiting nutrient for cassava, and N availability can influence the crop cycle, including earlier harvest. The aim of this study was to study the effect of harvest time on the production components of cassava, “Aciolina” cultivar, at different rates of N fertiliser. The experiment was carried out in an area newly incorporated into the productive system in a savannah ecosystem in the northern Amazon. A randomised block experimental design was used in a split plot arrangement with four replications. The N rates (0, 30, 60, 150, and 330 kg ha-1) were allocated to the main plots, and the harvest times (90, 120, 150, 180, 240, 300, and 360 days after emergence of the stalks - DAE) were allocated to the subplots. Plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta; Cassava; Crop cycle; Nitrogen fertiliser; Amazonian savannah. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832017000100519 |
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| Registros recuperados: 327 | |
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