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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

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

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

Low phosphorus (P) supply is a major limitation of forage production in acid soils of the tropics. A glasshouse experiment was conducted to determine the differences in P acquisition and utilization among three legumes (Arachis pintoi, Stylosanthes capitata and Centrosema acutifolium) and one gra...


Rao, Idupulapati M.Borrero, V.Ricaurte Oyola, José JaumerGarcía, RamiroAyarza, Miguel Angel[Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type]Adaptive attributes of tropical forage species to acid soils. III. Differences in phosphorus acquisition and utilization as influenced by varying phosphorus supply and soil type
Rao, Idupulapati M.Miles, John W.Granobles, Juan Carlos[Differences in tolerance to infertile acid soil stress among germplasm accessions and genetic recombinants of the tropical forage grass genus, Brachiaria]Differences in tolerance to infertile acid soil stress among germplasm accessions and genetic recombinants of the tropical forage grass genus, Brachiaria
Rao, Idupulapati M.Ayarza, Miguel AngelGarcía, Ramiro[Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes]Adaptive attributes of tropical forage species to acid soils I. Differences in plant growth, nutrient acquisition and nutrient utilization among C4 grasses and C3 legumes

Los procesos erosivos en laderas Andinas (evidentes con la presencia de calvas, procesos de soliflucción, cárcavas, etc.) limitan el crecimiento de las plantas y, con ello, las posibilidades de sustentar una población humana creciente en la región. Los sistemas de producción tradicionales involu...


Ricaurte Oyola, José JaumerZhiping QuiFilipe, DRao, Idupulapati M.Amézquita Collazos, Edgar[Distribución radicular, absorción de nutrientes y erosión edáfica en sistemas de cultivos y forrajes en laderas del Cauca, Colombia = Roots distribution, nutrient absorption and soils erotion in forage and crops systems in Cauca hillside (Colombia)]Distribución radicular, absorción de nutrientes y erosión edáfica en sistemas de cultivos y forrajes en laderas del Cauca, Colombia = Roots distribution, nutrient absorption and soils erotion in forage and crops systems in Cauca hillside (Colombia)

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