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Cardoso Arango, Juan AndrésJiménez, J.Ricón, J.Rao, Idupulapati M.[Adaptive responses of Brachiaria grasses to hypoxia stress]Adaptive responses of Brachiaria grasses to hypoxia stress

High nitrogen (N) concentration in bovine urine, which generally exceeds plant N uptake rates, results in the formation of hotspots of N loss when bovine urine is deposited on grazed pasture soils. High spatial variability in the distribution of urine patches in grazed pastures poses a major chal...


Byrnes, Ryan C.Nùñez, JonathanArenas-Calle, Laura N.Rao, Idupulapati M.Trujillo, CatalinaÁlvarez, CarolinaArango, JacoboRasche, FrankChirinda, Ngonidzashe[Biological nitrification inhibition by Brachiaria grasses mitigates soil nitrous oxide emissions from bovine urine patches]Biological nitrification inhibition by Brachiaria grasses mitigates soil nitrous oxide emissions from bovine urine patches
Suarez-Vasquez, SenenMachado, L.F.Pizarro, Esteban A.[Seleccion de gramineas y leguminosas forrajeras en la zona cafetera de Supia, Colombia]Seleccion de gramineas y leguminosas forrajeras en la zona cafetera de Supia, Colombia

A virus with filamentous particles approximately 750 nm long was isolated from African oil palm (Elaeis guineensis) with `chlorotic ring' leaf symptoms in south-western Colombia. The virus was mechanically transmitted from oil palm to brachiaria, maize, sorghum, and sugarcane (Gramineae) but not ...


Morales, Francisco JoséLozano Potes, ISedano Cruz, RECastaño, M.Arroyave, José A.[Partial characterization of a potyvirus infecting African oil palm in South America]Partial characterization of a potyvirus infecting African oil palm in South America

A survey of three regions of Colombia revealed a total of 31 species of plant-parasitic nematodes associated with tropical pasture legumes and grasses. Seventeen of these nematode species had not been recorded previously in Colombia. There also are 120 newly reported associations of plant-parasit...


Stanton, J.M.Siddiqi, MRLenne, J.M.[Plant-parasitic nematodes associated with tropical pastures in Colombia]Plant-parasitic nematodes associated with tropical pastures in Colombia

Three phases of Rhizobium inoculation trials were carried out as part of a programme to select forage legume germplasm adapted to acid, infertile Oxisols of tropical America. Firstly, a range of tropical forage legumes were evaluated for their response to N fertilization or inoculation with strai...


Sylvester-Bradley, Rosemary[Rhizobium inoculation trials designed to support a tropical forage legume selection programme]Rhizobium inoculation trials designed to support a tropical forage legume selection programme

The seed yields and limitations to seed production for four tropical grass cultivars were defined via a replicated field experiment conducted over three years at the Cerrados Agricultural Research Centre near Brasilia (latitude 15° 36' S; longitude 47° 42' W) in a tropical savanna region. The fou...


Andrade, Ronaldo P. deThomas, D.Ferguson, John E.[Seed production of pasture species in a tropical savanna region of Brazil. 2. Grasses]Seed production of pasture species in a tropical savanna region of Brazil. 2. Grasses

Spittlebugs (Homoptera: Cercopidae) are important pests of forage grasses in the genus Brachiaria (Trin.) Griseb. throughout the neotropics. Results of recurrent selection on resistance to spittlebugs in a synthetic brachiariagrass population are reported. The population was synthesized by recomb...


Miles, John W.Cardona Mejía, CésarSotelo, Guillermo[Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species]Recurrent selection in a synthetic brachiariagrass population improves resistance to three spittlebug species

As Brachiaria hybrid cv. ‘Mulato’ has adapted to acid soils with extremely low phosphorus (P) contents, its low-P-tolerance mechanisms were investigated and compared with those of wheat (Triticum aestivum L.) and rice (Oryza sativa L. cv. ‘Kitaake’). Among the three plant species, the highest P-u...


Begum, Hasna HenaOsaki, MitsuruNanamori, MasahitoWatanabe, ToshihiroShinano, TakuroRao, Idupulapati M.[Role of phosphoenolpyruvate carboxylase in the adaptation of a tropical forage grass to low-phosphorus acid soils]Role of phosphoenolpyruvate carboxylase in the adaptation of a tropical forage grass to low-phosphorus acid soils

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