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Most commercial Brachiaria species are adapted to low-fertility acid soils of the tropics. We describe, with examples, some of the attributes that enable them to adapt. These include the ability to (1) maintain root growth at the expense of shoot growth; (2) acquire and use both nitrate and ammon...


Rao, Idupulapati M.Kerridge, Peter C.Macedo, Manuel Cláudio Motta[Nutritional requirements of Brachiaria and adaptation to acid soils]Nutritional requirements of Brachiaria and adaptation to acid soils

Low nutrient availability, especially phosphorus (P) and nitrogen (N) supply is the major limitation to forage production in acid infertile soils of the tropics. A field study was conducted at the farm ‘La Es- peranza’ located in Mondomo, Department of Cauca, in the coffee growing zone of Colombia...


Gómez Carabali, ARao, Idupulapati M.Ricaurte, Jaumer[Differences in root distribution, nutrient acquisition and nutrient utilization by tropical forage species grown in degraded hillside soil conditions]Differences in root distribution, nutrient acquisition and nutrient utilization by tropical forage species grown in degraded hillside soil conditions

Rao, Idupulapati M.Beebe, Stephen E.Ricaurte Oyola, José JaumerTerán Santofimio, HenryMahuku, George S.[Identificación de los caracteres asociados con la resistencia a la sequía en fríjol común (Phaseolus vulgaris L.)]Identificación de los caracteres asociados con la resistencia a la sequía en fríjol común (Phaseolus vulgaris L.)

Zhinping, QRao, Idupulapati M.Ricaurte Oyola, José JaumerAmézquita Collazos, EdgarSanz, JoséKerridge, Peter C.[Root Distribution Effects on Nutrient Uptake and Soil Erosion in Crop-Forage Systems on Andean Hillsides = Effet de la distribution des racines sur Ie prélèvement d'éléments nutritifs et sur l'érosion dans les systèmes fourrager andins]Root Distribution Effects on Nutrient Uptake and Soil Erosion in Crop-Forage Systems on Andean Hillsides = Effet de la distribution des racines sur Ie prélèvement d'éléments nutritifs et sur l'érosion dans les systèmes fourrager andins

Tithonia diversifolia (Mexican sunflower) is a shrub commonly used as a green manure crop in Central and South America, Asia and Africa as it accumulates high levels of phosphorus and other nutrients, even in depleted soils. In root samples collected from the global distribution of Tithonia, we e...


Sharrock, R.A.Sinclair, Fergus L.Gliddon, C.Rao, Idupulapati M.Barrios, EdmundoMustonen, P.J.Smithson, P.Jones, D.L.Godbold, D.L.[A global assessment using PCR techniques of mycorrhizal fungal populations colonising Tithonia diversifolia]A global assessment using PCR techniques of mycorrhizal fungal populations colonising Tithonia diversifolia
Phiri, S.Rao, Idupulapati M.Barrios, EdmundoSingh, B.R.[Plant growth, mycorrhizal association, nutrient uptake and phosphorus dynamics in a volcanic-ash soil in Colombia as affected by the establishment of Tithonia diversifolia]Plant growth, mycorrhizal association, nutrient uptake and phosphorus dynamics in a volcanic-ash soil in Colombia as affected by the establishment of Tithonia diversifolia
Zhiping, QiRao, Idupulapati M.Ricaurte Oyola, José JaumerAmézquita Collazos, EdgarSanz Scovino, José IgnacioKerridge, Peter C.[Root distribution and nutrient uptake in crop-forage systems on Andean hillsides]Root distribution and nutrient uptake in crop-forage systems on Andean hillsides

Low phosphorus (P) supply is a major limitation to pasture establishment and production in highly weathered acid soils. Previous research showed that the forage legume, Arachis pintoi, was more efficient in acquiring P from infertile acid soils than the forage grass, Brachiaria dictyoneura. The m...


Rao, Idupulapati M.Borrero, V.Ricaurte Oyola, José JaumerGarcía, Ramiro[Adaptive attributes of tropical forage species to acid soils. V. Differences in phosphorus acquisition from less available inorganic and organic sources of phosphate]Adaptive attributes of tropical forage species to acid soils. V. Differences in phosphorus acquisition from less available inorganic and organic sources of phosphate
Beebe, Stephen E.Rao, Idupulapati M.[Breeding for tolerance to low soil phosphorus: the example of common bean]Breeding for tolerance to low soil phosphorus: the example of common bean

Somaclonal variation offers the possibility to obtain changes in one or a few characters of an otherwise outstanding cultivar without altering the remaining, and often unique, part of the genotype. It has been shown to be heritable for some species. A check line of Stylosanthes guianensis (Aubl.)...


Rao, Idupulapati M.Roca, William M.Ayarza, Miguel AngelTabares, EGarcía, R.[Somaclonal variation in plant adaptation to acid soil in the tropical forage legume Stylosanthes guianensis]Somaclonal variation in plant adaptation to acid soil in the tropical forage legume Stylosanthes guianensis

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