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This study was planned to analyse the basis that make Brachiaria species with greater feeding value than Napier grass (Pennisetum purpureum) for lactating dairy cows. Forty lactating crossbred cows were stall-fed on B. brizantha cv. Piatá or Napier grass cv. French Cameroon supplemented (mixed on...


Mutimura, MupenziEbong, CyprianRao, Idupulapati M.Nsahlai, Ignatius V.[Effects of supplementation of Brachiaria brizantha cultivar Piatá and Napier grass with Desmodium distortum on feed intake, digesta kinetics and milk production by crossbred dairy cows]Effects of supplementation of Brachiaria brizantha cultivar Piatá and Napier grass with Desmodium distortum on feed intake, digesta kinetics and milk production by crossbred dairy cows

Sowing density is a major management factor that affects growth and development of grain crops by modifying the canopy light environment and interplant competition for water and nutrients. While the effects of sowing density and plant architecture on static vegetative and reproductive growth trai...


Ricaurte Oyola, José JaumerClavijo Michelangeli, Jose A.Sinclair, Thomas R.Rao, Idupulapati M.Beebe, Stephen E.[Sowing density effect on common bean leaf area development]Sowing density effect on common bean leaf area development

Common bean productivity is reduced by several abiotic stress factors like drought and low soil fertility, leading to yield losses particularly in low input smallholder farming systems in the tropics. To understand the genetics of stress tolerance, and to improve adaptation of common bean to adv...


Díaz, Lucy MilenaRicaurte, JaumerTovar, EduardoCajiao V., César HernandoTerán Santofimio, HenryGrajales, Miguel A.Polanía, JoseRao, Idupulapati M.Beebe, Stephen E.Raatz, Bodo[QTL analyses for tolerance to abiotic stresses in a common bean (Phaseolus vulgaris L.) population]QTL analyses for tolerance to abiotic stresses in a common bean (Phaseolus vulgaris L.) population

Drought is the major abiotic stress factor limiting yield of common bean (Phaseolus vulgaris L.) in smallholder systems in Latin America and eastern and southern Africa; where it is a main source of protein in the daily diet. Identification of shoot and root traits associated with drought resista...


Polanía Perdomo, José A.Rao, Idupulapati M.Cajiao V., César HernandoGrajales, Miguel A.Rivera, MarielaVelásquez, FedericoRaatz, BodoBeebe, Stephen E.[Shoot and Root Traits Contribute to Drought Resistance in Recombinant Inbred Lines of MD 23–24 × SEA 5 of Common Bean]Shoot and Root Traits Contribute to Drought Resistance in Recombinant Inbred Lines of MD 23–24 × SEA 5 of Common Bean
Rao, Idupulapati M.Beebe, Stephen E.Polanía Perdomo, José A.Grajales, Miguel A.Cajiao V., César HernandoRicaurte Oyola, José Jaumer[Evidence for genotypic differences among elite lines of common bean in the ability to remobilize photosynthate to increase yield under drought]Evidence for genotypic differences among elite lines of common bean in the ability to remobilize photosynthate to increase yield under drought

Symbiotic nitrogen fixation (SNF) contributes to improve grain yield under nitrogen (N) deficiency. Climbing beans are known to be superior to bush beans in their potential for SNF. The main objectives of this study were to: (i) quantify genotypic differences in SNF ability of climbing beans usin...


Barbosa Torres, Norma ConstanzaPortilla, ElizabethBuendía Castellanos, Hector F.Raatz, BodoBeebe, Stephen E.Rao, Idupulapati M.[Genotypic differences in symbiotic nitrogen fixation ability and seed yield of climbing bean]Genotypic differences in symbiotic nitrogen fixation ability and seed yield of climbing bean

Background and Aims: The forage grass Brachiaria humidicola (Bh) has been shown to reduce soil microbial nitrification. However, it is not known if biological nitrification inhibition (BNI) also has an effect on nitrogen (N) cycling during cultivation of subsequent crops. Therefore, the objective...


Karwat, HannesMoreta, DaniloArango, JacoboNúñez, JonathanRao, Idupulapati M.Rincón, ÁlvaroRasche, FrankCadisch, Georg[Residual effect of BNI by Brachiaria humidicola pasture on nitrogen recovery and grain yield of subsequent maize]Residual effect of BNI by Brachiaria humidicola pasture on nitrogen recovery and grain yield of subsequent maize

Accurate assessment of crop water uptake (WU) and water use efficiency (WUE) is not easy under field conditions. Carbon isotope discrimination (Δ13C) has been used as a surrogate of WUE to examine crop yield responses to drought and its relationship with WU and WUE. A 2-yr study was conducted (i)...


Sanz-Saez, AlvaroMaw, Michael J.W.Polania, Jose A.Rao, Idupulapati M.Beebe, Stephen E.Fritschi, Felix B.[Using Carbon Isotope Discrimination to Assess Genotypic Differences in Drought Resistance of Parental Lines of Common Bean]Using Carbon Isotope Discrimination to Assess Genotypic Differences in Drought Resistance of Parental Lines of Common Bean
Suárez Salazar, Juan CarlosPolanía, José A.Contreras Bastidas, Amara TatianaRodríguez Suárez, LeonardoBeebe, Stephen E.Rao, Idupulapati M.[Agronomical, phenological and physiological performance of common bean lines in the Amazon region of Colombia]Agronomical, phenological and physiological performance of common bean lines in the Amazon region of Colombia

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