Some methodologies, including examples, for developing bean var. specifically adapted to intercropping with maize are considered. Since every breeding program has to contend with genotype x environment interactions, decisions have to be made regarding the locations for breeding nurseries, the conditions of soil fertility, and disease and pest contr...
This paper describes two techniques used in Rwanda for integrating farmer expertise into bean varietal development. Standard farmer evaluation of on-farm trials can help: 1) indicate how varieties perform under farmer conditions; 2) better identify criteria critical to farmers; 3) target varieties to agronomic regions; 4) target varieties to socio-...
The need for farmer participation, considering the complexity and diversity of bean production systems in Uganda, is highlighted. Through on-farm experimentation, technologies can be evaluated under farmers` environmental and managerial conditions. Farmer participation in bean research in the country has been mainly in the form of exploratory surve...
A Regional Bean Breeding Workshop was carried out in July 1989 at the Instituto de Ciencia y Tecnologia Agricolas (ICTA) in Jutiapa, Guatemala, to analyze practical managerial aspects of the Regional Cooperative Bean Program for Central America, Mexico, and the Caribbean. This program is financed by the Swiss Development Corporation and CIAT provid...
The different stages of a technique developed by CIAT to increase the N fixation of beans are indicated. In stage 1L, the effectivity of native rhizobial strains is assessed; bean nodulation and N fixation are recorded. In stage 1R , rhizobial strains are isolated, purified, authenticated in the lab. As a result, 50 rhizobial strains have been isol...
