Change to Ukrainian interface versionChange to English interface versionChange to Russian interface versionHome pageClear last query resultsHelp page
Search for specific termsBrowse by subject categoryBrowse alphabetical list of titlesBrowse by organizationBrowse special topic issues

close this bookAbstracts on Sustainable Agriculture (GTZ; 1992; 423 pages)
Open this folder and view contentsAbstracts On Traditional Land-Use Systems
Open this folder and view contentsAbstracts on farming systems research and development
Open this folder and view contentsAbstracts on integrated systems
close this folderAbstracts on cropping system
View the documentAcknowledgements
View the document1. Green manure crops in irrigated and rainfed lowland rice-based cropping systems in south Asia.
View the document2. Comparative evaluation of some inter-cropping systems in the humid tropics of southern nigeria.
View the document3. Intercropping improves land-use efficiency.
View the document4. A new maize modernizes savanna farming.
View the document5. Analysis of the environmental component of genotype x environment interaction in crop adaptation evaluation.
View the document6. Climatic analyses and cropping systems in the semiarid tropics.
View the document7. Field crop production in tropical Africa.
View the document8. The cultivated plants of the tropics and subtropics.
View the document9. Software system for plant growth prediction.
View the document10. Flood-tolerant crops for low-input sustainable agriculture in the everglades agricultural area.
View the document11. The physiology of tropical production.
View the document12. Achieving sustainability in cropping systems: the labour requirements of a mulch rotation system in Kalimantan, Indonesia.
View the document13. Grain yield responses in rice to eight tropical green manures.
View the document14. Utilization efficiency of applied nitrogen as related to yield advantage in maize/mungbean intercropping.
View the document15. Effects of two underseed species, medicago polymorpha l. And scorpiurus muricatus l.,on the yield of main crop (durum wheat) and subsequent crop (teff) under humid moisture regimes in Ethiopia.
View the document16. Characterization and environment-management relationships in beans and sorghum intercropped with maize in honduras. (caracterizacion y relaciones ambiente-manejo en sistemas de frijol y sorgo asociados con maiz en Honduras.)
View the document17. Production potential of pigeonpea/pearl millet intercropping system in rainfed diara (floodprone) areas of eastern uttar pradesh, India.
View the document18. Effect of mixed cropping lentil with barley at different seeding rates.
View the document19. Yield performance and complementarity in mixtures of bread wheat (triticum aestivum l.) And pea (pisum sativum l.).
View the document20. Economic feasibility of green manure in rice-based cropping systems.
View the document21. Effect of nitrogen on pigeonpea (cajanus cajan) and rice (oryza sativa) intercropping system.
View the document22. Smallholder cotton cropping practices in Togo.
View the document23. Effect of row arrangement on yield and yield advantages in sorghum/finger millet intercrops.
View the document24. Yield, economics and nutrient balance in cropping systems based on rice (oriza sativa).
View the document25. Mechanisms for overyielding in a sunflower/mustard intercrop.
View the document26. Agronomic modification of competition between cassava and pigeonpea in intercropping.
View the document27. Production and economic evaluation of white guinea yam (dioscorea rotundata) minisetts under ridge and bed production systems in a tropical guinea savanna location, Nigeria.
View the document28. Evaluation of intercropping cassava/corn/beans (phaseolus vulgaris l.) In northeast Brazil.
View the document29. Intercropping of sweet potato and legumes.
View the document30. Cassava in shifting cultivation. - a system approach to agricultural technology development in Africa.-
View the document31. Economic returns from yam/maize intercrops with various stake densities in a high-rainfall area.
View the document32. Performance of three centrosema spp. And pueraria phaseoloides in grazed associations with andropogon gayanus in the eastern plains of Colombia.
View the document33. Barley, lentil, and flax yield under different intercropping systems.
View the document34. Biological potential and economic feasibility of intercropping oilseeds and pulses with safflower (carthamus tinctorius) in drylands.
View the document35. Screening of different tropical legumes in monoculture and in association with cassava for adaption to acid infertile and high al-content soil.
View the document36. Intercropping studies in peanut (arachis hypogaea l.).
View the document37. Intercropping of rainfed groundnut (arachis hypogaea) with annual oilseed crops under different planting patterns.
View the document38. Resource use and plant interactions in a rice-mungbean intercrop.
View the document39. Cassava/legume intercropping with contrasting cassava cultivars. Part I
View the document40. Cassava/legume intercropping with contrasting cassava cultivars. Part II
View the document41. A post-green revolution strategy for the improvement of small farmer-grown common beans.
Open this folder and view contentsAbstracts on agroecology
Open this folder and view contentsAbstracts on agrometeorology
Open this folder and view contentsAbstracts on agroforestry
Open this folder and view contentsAbstracts on homegardens
Open this folder and view contentsAbstracts on seed production
Open this folder and view contentsAbstracts on plant protection
Open this folder and view contentsAbstracts on water management
Open this folder and view contentsAbstracts on soil fertility
Open this folder and view contentsAbstracts on erosion and desertification control
Open this folder and view contentsAbstracts on potential crops for marginal lands
 

41. A post-green revolution strategy for the improvement of small farmer-grown common beans.

Trop. Pest Management, 35, (3), 1989, pp. 243-247

This paper outlines the post-Green Revolution strategy of the CIAT Bean

Program, then presents a case study from Costa Rica illustrating how it has worked in practice.

The Green Revolution's fertilizer responsive rice and wheat varieties had a major impact on production, but they created great controversy due to concerns about their adoption by resource poor farmers.

The short stature, highly tillering new rice varieties contributed to outbreaks of the brown planthopper in some Asian countries. The new varieties were selected for performance in favored conditions of high fertility and timely irrigation, situations that often failed to correspond to the reality faced by small farmers.

The CIAT Bean Program has focused on disease resistance breeding, with selection for performance under low input conditions and adaptation to farmers' current production systems. This strategy was chosen to make new bean technology more accessible to resource poor farmers in low income countries than had been the products of the Green Revolution approach of selecting for maximum yield under optimum high input conditions. A case study of adoption of new disease resistant bean varieties among small farmers in Costa Rica shows that the disease resistance strategy has resulted in varieties that improve productivity even in farmers' traditional shifting cultivation system. Many small farmers are finding it advantageous to intensify management in order to raise the gains from the new varieties. Such success in a disease resistance, small farm-oriented crop improvement program, depends critically on strong national agricultural research capacity, and a continuing commitment to deploy new resistance sources in locally adapted materials.

Gains made through the resistance strategy will necessarily remain vulnerable to being overcome by pathogenic variability or to newly emerging problems, but due both to the broad genetic variability upon which bean production is based, and also to the decentralized breeding strategy which targets specific genetic material to each particular production problem, production environment and grain type, such vulnerability will express itself only locally, and therefore ensure stable total production. A major part of the impact of CIAT's program may be the avoidance of substantial production reductions rather than the enjoyment of spectacular production increases.

to previous section to next section

[Ukrainian]  [English]  [Russian]