Buscar
Mostrando ítems 31-40 de 49
Book
The Southern African drought and low soil fertility (SADLF) project: giving smallholder farmers the maize seed they want
(CIMMYT, 2003)
Given a choice, most people would not wish to confront the challenges that govern the lives of small-scale farmers in southern Africa. In this region, which has the most erratic growing conditions on earth, crop failures ...
Article
Selection for drought tolerance in two tropical maize populations
(African Crop Science Society, 2003)
Drought is a major factor limiting maize ( Zea mays check for this species in other resources L.) yield in much of the world. The need to breed maize cultivars with improved drought tolerance is apparent. This study compared ...
Article
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)
(FacT Limited, 2008)
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 ...
Article
Farmer perceptions on maize cultivars in the marginal eastern belt of Zimbabwe and their implications for breeding
(African Crop Science Society, 2006)
Productivity of maize ( Zea mays check for this species in other resources ) is low in the small-holder sector of Zimbabwe because the crop is grown under stress-prone environments and limited resources. The objective of ...
Article
Developing Bt maize for resource-poor farmers - Recent advances in the IRMA project
(Academic Journals, 2005)
This paper presents an overview of the advances in the IRMA project, which develops insect resistant maize varieties for resource-poor farmers, using both conventional breeding and genetic engineering. The project started ...
Article
Nitrogen effects on maize yield following groundnut in rotation on smallholder farms in sub-humid Zimbabwe
(Academic Journals, 2007)
Rotating maize (Zea mays L.) with groundnut (Arachis hypogaea L.) has been proposed as a way to maintain soil fertility and prevent maize productivity declines in the smallholder cropping systems of sub-humid Zimbabwe. ...
Article
Diagnostic research to enable adoption of transgenic crop varieties by smallholder farmers in Sub-Saharan Africa
(Academic Journals, 2003)
Diagnostic research is important in helping to create an enabling environment for promising biotechnology products in smallholder agriculture, before rather than after release. The biotechnology products that now hold ...
Article
Evaluation of the use of herbicide (Imazapyr) and fertilizer application in integrated management of Striga asiatica in maize in Malawi
(Academic Journals, 2007)
The parasitic weed species Striga asiatica (L.) Kuntze is one of major constraints in maize production in Malawi. Studies were conducted from 1999/2000 to 2001/2002 seasons to evaluate the effects of seed dressing with ...
Article
Breeding and disseminating quality protein maize (QPM) for Africa
(Academic Journals, 2007)
Quality protein maize (QPM) describes a range of maize cultivars with twice the content of limiting amino acids lysine and tryptophan compared with conventional maize, and has been developed to help reduce human malnutrition ...
Article
The sustainability of a groundnut plus maize rotation over 12 years on smallholder farms in the sub-humid zone of Zimbabwe
(Academic Journals, 2007)
An experiment was conducted on four smallholder farms and on-station in the sub-humid zone of northeast Zimbabwe for 12 years to assess how the rotation of groundnut with NPK-fertilized and unfertilized maize affected the ...