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| Registros recuperados: 27 | |
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| Wekesa, E.; Mwangi, Wilfred; Verkuijl, Hugo; Danda, Milton Kengo; De Groote, Hugo. |
| Maize is the major food crop grown in the coastal region of Kenya and constitutes a major component of the diet of the population in the region. However, average yields are far below the potential for the region and low production levels create serious food deficits. Over the years, new technologies have been introduced but adoption has remained low, especially for fertilizer. This paper examined current maize-farming practices and technological and socioeconomic factors that influenced adoption in the Kilifi and Kwale Districts of the Coast Province, that together account for half of maize production in the region. The study found low adoption levels for improved maize varieties and technology, especially fertilizer, among farmers in the area. Farmers... |
| Tipo: Report |
Palavras-chave: Maize; Crops; Innovation adoption; Technology transfer; Food production; Production economics; Production factors; Plant breeding; Fertilizers; Yields; Kenya; Crop Production/Industries; E14; E16. |
| Ano: 2003 |
URL: http://purl.umn.edu/56109 |
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| De Groote, Hugo; Tomlins, Keith; Haleegoah, Joyce; Awool, Manfred; Frimpong, Benedicta; Banerji, Abijit; Chowdury, Shyamal K.; Meenakshi, J.V.. |
| Deficiencies of micronutrients such as vitamin A are widespread, expecially in Africa. Biofortified crops such as maize, bred for high levels of provitamin A might offer a solution, but these crops are often bright orange, and African maize consumers prefer white. To estimate the consumers interest in orange biofortified maize, sensory evaluations were organized in rural Ghana with white, yellow and orange maize. The effect of information on willingness to pay for biofortification was estimated using a simulated radio message. Results indicate that color preferences are highly regional, wide variation exist within regions, and the provision of information is able to change these preferences. The color of biofortified maize should therefore not be seen as... |
| Tipo: Journal Article |
Palavras-chave: Maize; Biofortification; Consumers; Experimental auction; Sensory evaluation; Crop Production/Industries; Demand and Price Analysis. |
| Ano: 2010 |
URL: http://purl.umn.edu/96197 |
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| De Groote, Hugo; Overholt, William; Ouma, James Okuro; Mugo, Stephen. |
| The Insect Resistant Maize for Africa (IRMA) project is currently developing Bt maize for Kenya. So far, Bt genes with resistance to Chilo partellus, Chilo orichalcociliellus, Eldana Sacharina, and Sesamia calamistis, four of the five major stemborers were successfully incorporated into elite CIMMYT maize inbred line (CML216) and tested in insect bioassays in Kenya. Participatory Rural Appraisals showed that stem borers are indeed a major pest problems for farmers. Four seasons of on-farm crop loss assessment showed an average crop loss of 13.5%, or 0.4 million tons, valued at US$ 80 million. If the project manages to find a Bt gene that is effective to the fifth stemborer, Busseola fusca, adoption rates are likely to be high, and therefore the returns.... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Maize; Africa; Genetically Modified Crops; Bt crops; Crop Production/Industries; Research and Development/Tech Change/Emerging Technologies. |
| Ano: 2003 |
URL: http://purl.umn.edu/25854 |
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| Kimenju, Simon Chege; De Groote, Hugo; Morawetz, Ulrich B.. |
| For quite a while, stated preferences have been a major tool to measure consumer preferences for new products and services. Revealed preference methods, in particular experimental economics, have gained popularity recently because they have been shown to be more incentive compatible, and therefore more accurate. However, this advantage comes at the expense of higher survey costs. In the developing countries with limited funding for research, it is important to determine whether the extra cost can be justified by the extra gain in accuracy. A survey of 100 farmers was carried out in Western Kenya to determine consumer preference for yellow maize using the contingent valuation, choice experiments and experimental auction methods. Experimental auctions... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Kenya; Maize; Consumer; Experimental auctions; Stated preference; WTP; Crop Production/Industries; Food Consumption/Nutrition/Food Safety; D6; Q12. |
| Ano: 2006 |
URL: http://purl.umn.edu/25642 |
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| De Groote, Hugo; Andam, Kwaw S.; Hall, Mike; Munyua, Bernard Gathigi; Ngigi, Obadiah; Spielman, David J.. |
| Paper accepted for presentation at the 27th Conference of the International Association of Agricultural Economists (IAAE), Beijing China, August 16-22, 2009, (Ref 690) |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Maize; Market segmentation; Seed; Agricultural and Food Policy; Crop Production/Industries; International Development. |
| Ano: 2009 |
URL: http://purl.umn.edu/51753 |
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| Kimenju, Simon Chege; De Groote, Hugo. |
| A survey of 600 consumers was conducted in Nairobi to determine attitudes and willingness to pay (WTP) for GM maize meal. WTP was estimated using the double-bounded logit model. Overall, 38% are aware of GM crops. Most consumers believe in the technology's positive impacts, but are concerned about environmental and health risks. Majority (68%) would buy GM maize meal at the price of their favourite maize meal brand. The mean WTP for GM maize meal is KShs 58 for a 2kg packet, a premium of 13.7 % over mean average price of favourite brands. WTP is influenced more by subjective than socioeconomic characteristics. |
| Tipo: Conference Paper or Presentation |
Palavras-chave: GMO; Biotechnology; Consumer; Africa; Maize; Consumer/Household Economics; D12; C25; Q16. |
| Ano: 2005 |
URL: http://purl.umn.edu/24504 |
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| Ouma, James Okuro; De Groote, Hugo; Owuor, George. |
| Maize is a key food crop in Kenya. While maize yields increased from 1.25 t ha-1 in early 1960s to over 2 tonnes in 1982, they fell below 1.5 t ha-1 in 2000. Given the limited land area, there is no doubt that Kenya will have to rely more on modern technologies for increased yields .Use of improved maize varieties and fertilizers will therefore continue to be critical inputs for improving productivity. To improve production, it is important to understand factors determining adoption and intensity of use of modern technologies. A stratified 2-stage sampling design was used to select 1800 households, subsequently interviewed by means of structured questionnaire. Econometric models were used to explore factors influencing adoption and intensity of use of the... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Maize; Adoption; Improved seed; Fertilizer; Credit; Extension; Kenya; Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/25433 |
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| Kimenju, Simon Chege; De Groote, Hugo. |
| Upcoming technologies for maize storage have sometimes been promoted without being subjected to trials and economic analysis. In the recent past, new storage technologies, actellic super, super grain bag and the metal silo have been developed. In this paper, the results of crop loss trials are combined with measures of project worth to determine the attractiveness of investing in new storage technologies. Determination of the benefit was based on the amount of loss the new technology could abate. A one ton metal silo, with negligible % crop loss abated USD 100 in 12 months. These benefits were found to increase with time meaning that a farmer benefits by storing longer. Measures of project worth, the NPV and BCR were used to analyze the attractiveness of... |
| Tipo: Journal Article |
Palavras-chave: Storage; LGB; Economic analysis; Kenya; Crop Production/Industries. |
| Ano: 2010 |
URL: http://purl.umn.edu/96419 |
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| Wanyama, Joseph M.; De Groote, Hugo; Mose, Lawrence Obae; Odendo, Martins; Ouma, James Okuro; Owuor, George; Lutta, M.; Ndung'U, J.; Mutoko, M.C.. |
| Maize is the staple food crop and source of income for majority of the Kenyan population and many sub-Saharan African countries. The increasing Kenyan population demands an increase in maize production if intermittent food deficits have to be averted. Since the introduction of improved maize varieties in mid-1960, the start of Green Revolution period, maize yields increased drastically up to 1970s and started declining from 1980s to-date. The key contributory factors are nutrient mining, sub-optimal input use and insect pest damage. Of the insect pests, stalk borer is of economic importance. Currently, KARI and CIMMYT are developing maize varieties that are tolerant to stalk borer damage. In order to evaluate the potential impact of these interventions... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Crop Production/Industries. |
| Ano: 2004 |
URL: http://purl.umn.edu/9526 |
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| Gunaratna, Nilupa S.; De Groote, Hugo; McCabe, G.P.. |
| Biofortification, or the genetic improvement of the nutritional quality of food crops, is a promising strategy to combat undernutrition, particularly among the rural poor in developing countries. However, traditional methods of impact assessment do not apply to biofortified crops as little or no yield increases are expected. Significant progress has been made to develop maize varieties with improved protein quality, collectively known as quality protein maize (QPM). Evidence for the impact of QPM at the community level, as demonstrated by randomized, controlled studies, was evaluated using meta-analysis. A new and generalizable effect size was proposed to quantify the impact of QPM on a key outcome, child growth. The results indicated that consumption of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Impact assessment; Biofortification; Meta-analysis; Crop Production/Industries; Food Security and Poverty. |
| Ano: 2008 |
URL: http://purl.umn.edu/44166 |
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| De Groote, Hugo; Gunaratna, Nilupa S.; Ergano, Kebebe; Friesen, Dennis. |
| Biofortified crops, bred for improved nutritional quality, can alleviate nutritional deficiencies if they are produced and consumed in sufficient quantities. These varieties can be promoted based on their agronomic performance or based on their nutritional qualities. Quality protein maize (QPM) was the first biofortified crop and has been disseminated in Africa using both approaches. To study their effectiveness, a survey of rural households was conducted in the maize-growing areas of East Africa, comparing communities with access to QPM extension activities to control communities. The results show that a third to one half of the farmers in project communities participated in extension activities in all countries except Kenya. In these communities,... |
| Tipo: Journal Article |
Palavras-chave: Teaching/Communication/Extension/Profession. |
| Ano: 2010 |
URL: http://purl.umn.edu/96429 |
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| De Groote, Hugo; Kimenju, Simon Chege; Owuor, George; Wanyama, Japheter. |
| This study analyses the impact of the liberalization on the intensification of maize production in Kenya. It first analyses the impact of liberalization on input and output prices, followed by an analysis of farmer practices comparing two major farmer surveys, from 1992 and 2002. The results show that liberalization has had a general positive impact on the evolution of prices, with a decrease of input/output price ratios. However, fluctuations of maize prices has become very high and, combined with a decrease of marketing by the marketing board, has increased the uncertainty in maize production. The liberalization has also resulted in a decrease in extension services. Fortunately, farmers have an increased access to credit services. The combined effect of... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Liberalization; Intensification; Adoption; Maize; Africa; International Development; International Relations/Trade. |
| Ano: 2006 |
URL: http://purl.umn.edu/25419 |
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| Rutto, Esther; De Groote, Hugo; Vanlauwe, Bernard; Kanampiu, Fred; Odhiambo, George D.; Khan, Zeyaur R.. |
| During participatory rural appraisals, farmers at the Lake Victoria basin of Kenya and Uganda identified Striga, stemborer and declining soil fertility as three major constraints to maize production To reduce food insecurity, several innovative integrated technologies to address these constraints have been developed, including push-pull (maize intercropped with Desmodium and surrounded by napier grass), maize-soybean and maize-crotalaria rotations, and Imazapyrresistant (IR) maize seed coated with the herbicide. To let farmers evaluate the new technologies, 12 demonstration trials, comparing the different technologies, were established in four villages in Siaya and Vihiga districts (Western Kenya) and two villages in Busia (Uganda). These evaluations,... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Farmers' preference; Technologies; Ordinal regression; Crop Production/Industries. |
| Ano: 2006 |
URL: http://purl.umn.edu/25317 |
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| Registros recuperados: 27 | |
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