Mostrando ítems 1-10 de 119
Maize technology development and transfer : A GIS application for research planning in Kenya
(CIMMYT; KARI; CAB International, 1998)
Bt-transgenic maize does not deter oviposition by two important African cereal stem borers, Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae)
Objective: To assess Chilo partellus Swinhoe (Lepidoptera: Crambidae) and Sesamia calamistis Hampson (Lepidoptera: Noctuidae) ovipositional responses on Bt (Event 216, containing the Cry1Ab gene) and isogenic non-Bt (CML ...
Consumer preferences for maize products in urban Kenya
Background. New maize varieties have been biofortified with provitamin A, mainly â-carotene, which renders the grain yellow or orange. Unfortunately, many African consumers prefer white maize. The maize consumption patterns ...
Evaluation of stem borer resistance management strategies for Bt maize in Kenya based on alternative host refugia
Stem borers are the major insect pests of maize in Kenya. The use of Bacillus thuringiensis (Bt) technology is an effective way of controlling lepidopteran pests. However, the likelihood of development of resistance to ...
Successful community-based seed production strategies
Designed to address the issues that limit the access of small-scale farmers in sub-Saharan Africa to quality, affordable seed of the crops on which they depend for food security and livelihoods, this collection of articles ...
Maize technology in Malawi : a green revolution in the making?
This case study of technical change in maize production in Malawi seeks to answer the question of whether the diffusion of improved maize seed and fertilizer among Malawian smallholder farmers will create the sharp yield ...
Adoption of maize production technologies in the Lake Zone of Tanzania
(CIMMYT; The United Republic of Tanzania; SACCAR, 1999)
This study of the adoption of maize production technologies in the Lake Zone of Tanzania forms part of a larger study to evaluate the impact of maize research and extension throughout Tanzania over the past 20 years. Using ...
Post-harvest losses in African maize in the face of increasing food shortage
Maize is the most important food staple for resource-poor smallholders in Africa, providing food and income to millions. One of the key constraints to improving food and nutritional security in Africa is the poor post-harvest ...
Levels of control of Chilo partellus stem borer in segregating tropical Bt maize populations in Kenya
In Kenya, stem borers destroy an estimated 400,000 metric tons, or 13.5%, of farmers' annual maize harvest costing about US$80 millions. Bacillus thuringiensis (Bt) maize controls stem borers without harming humans, livestock ...
Genotype by environment interactions and yield stability of stem borer resistant maize hybrids in Kenya
In a maize breeding program, potential genotypes are usually evaluated in different environments before desirable ones are selected. Genotype x environment (G x E) interaction is associated with the differential performance ...