Growth and N uptake in pot-grown maize, beans, and cassava were evaluated under 2 levels of soil N at CIAT-Palmira (Colombia). The lower amount of the element reduced its uptake by the 3 species, resulting in lower tissue concn., especially in the leaves. Under low N, DM accumulation was also red...
Porto, M.C.M.
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El-Sharkawy, Mabrouk A.
,
Cock, James H.
,
Hernández, A. del P.
,
Cadena, G. de
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[Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo]
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Crescimento, fotossintese e eficiencia do uso de nitrogenio em milho, feijao e mandioca submetidos a dois niveis de N no solo
Cassava is the major root crop in eastern and southern Africa. It is an important source of calories for the inhabitants of such countries as Uganda, Malawi, and Mozambique. It may also be the best alternative for overcoming the food scarcities caused by frequent droughts in the region.
Identification of drought-tolerant and -resistant varieties of cassava is of paramount importance for the maximization of productivity potential in drought-prone areas. Nine improved cassava varieties developed in humid and subhumid agro-ecologies were evaluated for their growth responses and ada...
Okogbenin, E.
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Ekanayake, I.J.
,
Porto, M.C.M.
,
[Genotypic variability in adaptation responses of selected clones of cassava to drought stress in the Sudan savanna zone of Nigeria]
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Genotypic variability in adaptation responses of selected clones of cassava to drought stress in the Sudan savanna zone of Nigeria
Porto, M.C.M.
,
[Estimation of dry matter content in cassava by the specific gravity method]
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Estimation of dry matter content in cassava by the specific gravity method
The current status of cassava cultivation in Brazil is analyzed; aspects covered are the distribution of production, cultivation systems, main uses given to the crop, and problems encountered in the different geographic regions of the country (north, NE, SE, south, and central-west). An overview ...
Se analiza el estado actual del cultivo de la yuca en Brasil, cubriendo aspectos de la distribucion de la produccion, los sistemas de cultivo y los principales usos y problemas encontrados en las diferentes regiones geograficas del pais (Norte, Nordeste, Sudeste, Sur y Centro-Oeste). Tambien se p...
The gene pools for breeding cassava (Manihot esculenta Crantz) in Africa currently contain only a fraction of the existing genetic variation found in Latin America where the crop originates. Our research aimed to broaden the genetic base in Africa by introducing Latin American (LA) germplasm. The...
Okogbenin, Emmanuel
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Porto, M.C.M.
,
Egesi, Chiedozie N.
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Mba, C
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Espinosa, E.
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Santos Melendez, LG
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Ospina, C.
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Marin, JA
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Barrera Sabogal, E
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Gutiérrez A., Janeth Patricia
,
Ekanayake, I.J.
,
Iglesias, C.A.
,
Fregene, Martin A.
,
[Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa]
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Marker-assisted introgression of resistance to cassava mosaic disease into Latin American germplasm for the genetic improvement of cassava in Africa
Climatic and edaphic factors are important determinants of the growth and yield potential of an ecological environment. Among other cultural practices, planting methods play a very vital role in the performance of a crop. The effects of planting methods and soil moisture on cassava (Manihot escul...
Okogbenin, E.
,
Ekanayake, I.J.
,
Porto, M.C.M.
,
[Effect of planting methods and soil moisture on cassava performance in the semiarid Sudan savanna belt of Nigeria]
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Effect of planting methods and soil moisture on cassava performance in the semiarid Sudan savanna belt of Nigeria
Cassava (Manihot esculenta Crantz) crop is widely known adapt to variable drought conditions. Due to the lack of adapted and high-yielding cultivars tolerant to the prevalent biotic and abiotic stresses, cassava is yet to find a wide and appropriate niche in the farming systems of the African dry...
Ekeneyake, I.J.
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Dixon, Alfred G.O.
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Porto, M.C.M.
,
[Performance of various cassava clones in the dry savanna region of Nigeria]
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Performance of various cassava clones in the dry savanna region of Nigeria