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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

35. Screening of different tropical legumes in monoculture and in association with cassava for adaption to acid infertile and high al-content soil.

Beitr_ge trop. Landw. Vet. med., 28, 3, 1990, pp. 283-289

In this study 9 tropical grain legumes with 165 cultivars were screened or adaption to a low pH (3.9-4.1) and a high Al content in mococulture and in association with cassava.

In the monoculture experiment, the following grain legumes were tested: mung beans (Vigna radiata), cowpeas (Vigna unguiculata), pigeonpeas (Cajanus cajan), jackbeans (Canavalia ensiformis) as non-climbing, and winged beans (Psophocarpus tetragonolobus) and sword bean (Canavalia gladiata) as climbing species. The plot consisted of a double row 3.75 m in length, with a distance between rows of 0.6 m, and within rows 0.19 m.

In the mixed cropping experiments, the climbers winged bean and velvet bean were not tested, while soybeans (Glycine max) and non-climbing lima beans (Phaseolus lunatus) were added. The grain legume collection was planted in association with cassava (cv.CMC 84). 9 cassava plants were planted with one row of legumes on both sides. The fertility level of the plots was extremely low, only 500 kg/ha of lime was applied. The pH of the soil was even lower than in the monoculture screening experiment.

Good results have been obtained in multiple range cropping of cassava and common beans (Phaseolus vulgaris), but other tropical legumes, especially cowpea (Vigna unguiculata), are needed in cassava intercropping systems for climatic and soil conditions, under which beans do not grow well. This is the case on soils with low pH, low fertility, and high Al and/or Mn content, which are widely distributed in the tropics. An example of these conditions is the soil of the CIAT experimental station Quilichao in Colombia.

On this soil, common beans only grow when high levels of lime and fertilizer are supplied. Other legumes with tolerance of high levels of Al and Mn and low fertility show vigorous growth and high yield even at a very low level of purchased input. Although lower in nutritive value than common beans, their protein contents make them valuable complements to the high calorie producer cassava.

In this study with little or no fertilization the yields were low. The only acceptable yield was obtained from cowpea (Vigna unguiculata), averaging 1.1 t/ha in monoculture and 0,45t/ha in association with cassava. In the latter case, the cassava yield decreased by 26%. The other legumes - except for the velvet bean (Stizilobium derringianum) - were low yielding or without any yield, but some of them increased the tuber and starch yield of cassava.

It may be concluded that in selecting grain legumes for association with cassava, it is relatively safe to do this selection in legume-monoculture screening trials as a first step to eliminate materials with a low potential. Particularly on acid, infertile soils, the overriding factor will be that of adaption to adverse soil conditions; growth will be somewhat reduced and growth habits and therefore competition with cassava will not be serious. Nevertheless, legumes with intense early flowering (and maturity) appear to be most suitable, since early flowering reduces excessive vegetative development unfavourable for cassava yield formation, and early pod filling enables the legume to escape serious shading by cassava.

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Cropping systems

Asia, India, study, field trial, intercropping, peanut, pigeonpea, sunflower, finger millet, irrigation, planting geometrics, yield


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