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Lascano, Carlos E.Ferguson, John E.[Problemas específicos de la investigación con pasturas en fincas]Problemas específicos de la investigación con pasturas en fincas
Autor: Coppock, D.L.

Ethiopia has a vast lowland area that is important for human subsistence and the national economy. This paper reviews the physical and biological features of the lowlands and some Development perspectives that have been pursued since the 1970s. As elsewhere in Ethiopia, the lowlands have growing ...


Coppock, D.L.[The arid and semiarid low lands of Ethiopia: Environments, pastoral economies and issues in natural resources sustainability]The arid and semiarid low lands of Ethiopia: Environments, pastoral economies and issues in natural resources sustainability
Autor: Toro M., J.C.

A complete set of guidelines is provided for conducting cassava regional trials. In addition to general guidelines on site selection, exptl. design, planting and harvesting time, and others, specific recommendations are given on technology to be used for the different agronomic practices required...


Toro M., J.C.[Suggested guidelines for conducting regional trials]Suggested guidelines for conducting regional trials

Tests on the use of a single ox with a modified maresha plow were carried out in Ethiopia at the International Livestock Centre for Africa (ILCA) Debre Berhan station, on farmers' fields at Debre Zeit, and on a test track at the Agricultural Implement Research and Improvement Centre (AIRIC) near ...


Astatke, A.Mohamed-Saleem, M.A.[Experiences with the use of a single ox for cultivation in the Ethiopian highlands]Experiences with the use of a single ox for cultivation in the Ethiopian highlands

There is strong relationship between the weight of stake to be planted and it ability to emerge. Therefore, only good quality stem should be cut, partitioned into stakes, and treated for planting to optimise the limited resource of land area and other input engaged in the cassava cultivation ente...


Akoroda, M.O.Oyadiran, T.F.Yomeni, M.O.Okoro, E.Dixon, A.[Pattern of stake weight along the stem axis from its base and non emergence of planted stakes]Pattern of stake weight along the stem axis from its base and non emergence of planted stakes

A field collection of 90 sweetpotato (lpomoea batatas) accession collected. from various sources within and outside Nigeria were characterized at the llTA High Rainfall Station in Onne, Rivers State between June and August 2006. The objective of the study was to identify their distinctive charact...


Egeonu, I.Akoroda, M.O.Tarawali, G.[Characterizing 90 accessions of sweetpotato in high rainfall sites of southern Nigeria]Characterizing 90 accessions of sweetpotato in high rainfall sites of southern Nigeria

A description is given of CIAT's cassava breeding program, designed to exploit the adaptation of cassava to various physical and biological stress factors by selection over a range of moderate to high stress environments. The selection environments are described and a decentralized breeding metho...


Hershey, Clair H.[Breeding cassava for adaptation to stress conditions: development of a methodology]Breeding cassava for adaptation to stress conditions: development of a methodology

Jongruaysup, SNamwong, PTiensiriroek, ALaochaikarm, CJoodkong, AKatong, SWatananonta, WHoweler, Reinhardt H.[Minimum tillage for cassava in Thailand]Minimum tillage for cassava in Thailand

The 3 stages of the diagnostic procedure to identify soil fertility problems are reviewed, namely (1) classification of land into soil fertility management units, (2) diagnosis of soil fertility and plant nutrition problems, and (3) determination of the causes and mechanisms of nutrient disorders...


Wortmann, Charles S.Regassa, TMughogho, SK[Research methods for the diagnosis of soil fertility problems]Research methods for the diagnosis of soil fertility problems
Autor: Lynch, J Piha, M

Beans do not appear inherently suited to infertile soils. A diagnostic effort to define and evaluate soil constraints in African bean production is needed. We suggest bean BNF is host- plant limited, and that BNF in short-season bean is due to inadequate C and N dynamics in the bean plant. In inf...


Lynch, JPiha, M[Adaptation of beans to infertile soils]Adaptation of beans to infertile soils

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