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A description of cassava clones by their various mechanisms of tolerance to drought is useful in selecting parental clones tor hybridization and subsequent selection of clones from their progeny, which are targeted to various agroecological zones in the Sub-sahraran Africa. Evaluation of cassava ...


Ng, S.Y.C.Ekanayake, I.J.[Screening cassava (Manihot esculenta crantz) for polyethelene glycol mediated osmotic stress in vitro]Screening cassava (Manihot esculenta crantz) for polyethelene glycol mediated osmotic stress in vitro

Drought is responsible for large reductions in cassava root yields. On-farm root yields can be improved two- to three-fold and quality of fresh and processed products improved by the adoption of recently improved production technologies. The potential usefulness is high for genetic, morphological...


Ekanayake, I.J.[Conceptual issues in the use of cassava modelling for improved production in drought environments]Conceptual issues in the use of cassava modelling for improved production in drought environments

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]Effect of planting methods and soil moisture on cassava performance in the semiarid Sudan savanna belt of Nigeria

Twelve cassava genotypes were evaluated in the field in two cropping seasons at two locations in Nigeria for their reaction to cassava mosaic disease (CMD), cassava bacterial blight (CBB) and cassava green mite (CGM), using visual injury scores as the index for resistance. Lowest indices for CMD ...


Akparobi, S.O.Togun, A.O.Ekanayake, I.J.[Assessment of cassava genotypes for resistance to cassava mosaic disease, cassava bacterial blight and cassava green mite at a lowland and mid-altitude site in Nigeria]Assessment of cassava genotypes for resistance to cassava mosaic disease, cassava bacterial blight and cassava green mite at a lowland and mid-altitude site in Nigeria

Drought tolerance combined with resistance to black sigatoka (BS) disease are two desirable traits for plantains in some parts of the tropics. Field evaluation of leaf stomatal conductance, single leaf transpiration rate, photochemical efficiency, and role of stomata in BS resistance, was done fo...


Ekanayake, I.J.Ortiz, R.Vuylsteke, D.R.[Leaf stomatal conductance and stomatal morphology of Musa germplasm]Leaf stomatal conductance and stomatal morphology of Musa germplasm

The effects of plant age on the cyanogenic potential (CNP) of leaves (CNP-L) and storage roots (CNP-R) of selected cassava clones, TMS 30001, TMS 4(2)1425, TME1, TME2,Isunikankiyanand Dakata Wariya were studied in two agroecological zones in West Africa. The two zones were represented by Kano in ...


Githunguri, C.M.Ekanayake, I.J.Chweya, J.A.Dixon, Alfred G.O.Imungi, J.[The effect of different agroecological zones and plant age on the cyanogenic potential of six cassava clones]The effect of different agroecological zones and plant age on the cyanogenic potential of six cassava clones

Cassava sweet potato intercropping experiments were carried out at Ukiriguru (semiarid zone), Tanzania during the period from 1989-91. Four cassava varieties used were, Msitu Zanzibar, Alpim valenca, Mzimbirala and Liongo control. The second experiment tested four cassava planting densities, 6666...


Kapinga, R.Omueti, J.A.Ekanayake, I.J.[Soil N, P, and land use efficiency under cassava/sweet potato intercropping system in Tanzania]Soil N, P, and land use efficiency under cassava/sweet potato intercropping system in Tanzania

Water logging is a potential abiotic stress problem in the warm tropical potato growing areas, particularly in the lowland rice-based cropping systems. A field experiment was conducted in San Ramon, Peru during the rainy season to evaluate the effects of water logging on 12 clones (8 lowland trop...


Ekanayake, I.J.[Deleterious influence of water logging on potato in warm climates]Deleterious influence of water logging on potato in warm climates

In the Nigeria savanna (derived, Guinea and Sudan) belt, continuous production of crops with short or no fallow cycle, with small amounts or no fertilizer and mixed cropping is a prevalent land use system. Cultivation of cassava as a staple supplementary food source in relatively degraded savanna...


Ekanayake, I.J.Githunguri, C.M.[Implications of bipphysical site characteristics on growth and sustainable cassava production in the savannas of Nigeria]Implications of bipphysical site characteristics on growth and sustainable cassava production in the savannas of Nigeria

Twelve cassava (Manihot esculenta crantz) genotypes were grown at two field sites in Nigeria representing lowland and mid-altitude agroecological zones from 1994 to 1996 (Ibadan and Jos). Leaf area development and dry matter partitioning were studied by the destructive growth analyses at 3, 6, 9,...


Akparobi, S.Ekanayake, I.J.Togun, A.[The effect of weather regimes on the leaf area development and dry matter production in cassava]The effect of weather regimes on the leaf area development and dry matter production in cassava

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