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Amede, TilahunAmézquita Collazos, EdgarAshby, J.A.Ayarza, Miguel AngelBarrios, EdmundoBationo, B. AndréBeebe, Stephen E.Bellotti, Anthony C.Blair, Matthew W.Delve, Robert J.Fujisaka, SamHoweler, Reinhardt H.Johnson, Nancy L.Kaaria, Susan K.Kelemu, SegenetKerridge, Peter C.Kirkby, Roger A.Lascano, Carlos E.Lefroy, R.D.B.Mahuku, George S.Murwira, Herbert K.Oberthür, ThomasPachico, Douglas H.Peters, MichaelRamisch, Joshua J.Rao, Idupulapati M.Rondón, Marco AntonioSanginga, Pascal C.Swift, M.Vanlauwe, Bernard[Biological nitrogen fixation: A key input to integrated soil fertility management in the tropics]Biological nitrogen fixation: A key input to integrated soil fertility management in the tropics
Castro, AracelyRivera Peña, MarielaFerreira, OscarPavón Tijerino, Jellin del CarmenGarcía, EdwinAmézquita Collazos, EdgarAyarza, Miguel AngelBarrios, EdmundoRondón, Marco AntonioPauli, NatashaBaltodano, Maria EugeniaMendoza, BismarkÁlvarez Welchez, LuisCook, Simon E.Rubiano Mejía, Jorge EliécerJohnson, Nancy L.Rao, Idupulapati M.[Quesungual slash and mulch agroforestry system improves rain water productivity in hillside agroecosystems of the sub-humid tropics]Quesungual slash and mulch agroforestry system improves rain water productivity in hillside agroecosystems of the sub-humid tropics

Nitrification, a step in nitrogen (N) cycle, results in gaseous N emissions and NO3- leaching. In most natural ecosystems, where nitrification is reduced to a minor flux, do not leak N. In contrast, modern agricultural systems are characterized by unrestricted rapid nitrification, resulting in th...


Subbaraoa, Guntur V.Ito, O.Ishikawa, T.Watanabe, TomonariNakahara, KazuhikoRao, Idupulapati M.Hurtado, María del PilarRondón, Marco AntonioTomohiro, BanMasahiro, K.Hash, C. T.[Is there a genetic strategy to control nitrification and N2O emissions from agricultural systems? - biological Nitrification Inhibition (BNI)]Is there a genetic strategy to control nitrification and N2O emissions from agricultural systems? - biological Nitrification Inhibition (BNI)
Ayarza, Miguel AngelAmézquita Collazos, EdgarBarrios, EdmundoRondón, Marco AntonioRao, Idupulapati M.[Decision support tools and technologies to assess and reverse land degradation in tropical savanna and hillside agroecosystems of Latin America]Decision support tools and technologies to assess and reverse land degradation in tropical savanna and hillside agroecosystems of Latin America

Regulating nitrification could be a key strategy in improving nitrogen (N) recovery and agronomic N-use efficiency in situations where the loss of N following nitrification is significant. A highly sensitive bioassay using recombinant luminescent Nitrosomonas europaea, has been developed that can...


Subbaraoa, Guntur V.Rondón, Marco AntonioIto, O.Ishikawa, T.Rao, Idupulapati M.Nakahara, K.Lascano, Carlos E.Berry, W.L.[Biological nitrification inhibition (BNI): is it a widespread phenomenon?]Biological nitrification inhibition (BNI): is it a widespread phenomenon?
Quintero, M.Rondón, Marco AntonioCajas, S.Rincón, A.Rodríguez, C.Estrada, R.D.White, D.Toro, MIHurtado, María del PilarMartínez, J.Uribe Rivera, N[Promoting sustainable land management: a clean development mechanism project in the Caribbean savanna of Colombia]Promoting sustainable land management: a clean development mechanism project in the Caribbean savanna of Colombia

The application of biochar (biomass-derived black carbon) to soil has been shown to improve crop yields, but the reasons for this are often not clearly demonstrated. Here, we studied the effect of a single application of 0, 8 and 20 t ha?1 of biochar to a Colombian savanna Oxisol for 4 years (200...


Major, JRondón, Marco AntonioMolina Lopez, DLRiha, SJLehmann, Johannes[Maize yield and nutrition during 4 years after biochar application to a Colombian savanna oxisol]Maize yield and nutrition during 4 years after biochar application to a Colombian savanna oxisol

This study examines the potential, magnitude, and causes of enhanced biological N2 fixation (BNF) by common beans (Phaseolus vulgaris L.) through bio-char additions (charcoal, biomass-derived black carbon). Bio-char was added at 0, 30, 60, and 90 g kg?1 soil, and BNF was determined using the isot...


Rondón, Marco AntonioLehmann, JohannesRamírez, JuanHurtado, MP[Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions]Biological nitrogen fixation by common beans (Phaseolus vulgaris L.) increases with bio-char additions
Castro, A.Rivera Peña, MFerreira, OscarPavon, JGarcía, E.Amézquita Collazos, EdgarAyarza, Miguel AngelBarrios, E.Rondón, Marco AntonioPauli, N.Baltodano, Maria EugeniaMendoza, B.Welchez, L.A.Johnson, Nancy L.Cook, Simon E.Rao, Idupulapati M.[Adaptation to climate change: is the Quesungual system an option for smallholders in dry hillsides agroecosystems?]Adaptation to climate change: is the Quesungual system an option for smallholders in dry hillsides agroecosystems?

Black carbon (BC) is an important pool of the global C cycle, because it cycles much more slowly than others and may even be managed for C sequestration. Using stable isotope techniques, we investigated the fate of BC applied to a savanna Oxisol in Colombia at rates of 0, 11.6, 23.2 and 116.1 t B...


Major, JLehmann, JohannesRondón, Marco AntonioGoodale, C[Fate of soil applied black carbon: downward migration, leaching and soil respiration]Fate of soil applied black carbon: downward migration, leaching and soil respiration

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