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Journal Article 2018-12-01

Autor: Yue, Qian Ledo, Alicia Cheng, Kun Albanito, Fabrizio Lebender, Ulrike Sapkota, Tek B. Brentrup, Frank Stirling, Clare M. Smith, Pete Jianfei, Sun Pan, Genxing Hillier, Jonathan

Reliable quantification of nitrous oxide emission is a key to assessing efficiency of use and environmental impacts of N fertilizers in crop production. In this study, N2O emission and yield were quantified with a database of 853 field measurements in 104 reported studies and a regression model w...

Enlace original: https://cgspace.cgiar.org/handle/10568/99111

Investigación en Agricultura
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Yue, Qian ,  Ledo, Alicia ,  Cheng, Kun ,  Albanito, Fabrizio ,  Lebender, Ulrike ,  Sapkota, Tek B. ,  Brentrup, Frank ,  Stirling, Clare M. ,  Smith, Pete ,  Jianfei, Sun ,  Pan, Genxing ,  Hillier, Jonathan ,  [Re-assessing nitrous oxide emissions from croplands across Mainland China] ,  Re-assessing nitrous oxide emissions from croplands across Mainland China
Journal Article 2010

Autor: Kamara, A.Y. Ekeleme, F. Omoigui, L.O. Oikeh, S.O. Chikoye, D. Tegbaru, A.

In the dry savannas of West Africa, cultivation of upland rice (Oryza spp.) under rain-fed conditions is expanding due to the introduction of the New Rice for Africa (NERICA; WARDA, Bouake, Cote d'Ivoire) but appropriate N recommendations for these new cultivars are lacking. The present study eva...

Enlace original: https://cgspace.cgiar.org/handle/10568/89364

Investigación en Agricultura
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Kamara, A.Y. ,  Ekeleme, F. ,  Omoigui, L.O. ,  Oikeh, S.O. ,  Chikoye, D. ,  Tegbaru, A. ,  [Response of upland rice cultivars to nitrogen fertilizer in the savannas of Nigeria] ,  Response of upland rice cultivars to nitrogen fertilizer in the savannas of Nigeria
Journal Article 1997

Autor: Somda, Z.C. Powell, J.M. Bationo, B. André

The changes in soil pH and mineral N concentrations of cattle and sheep urine patches were compared to those occurring in fertilizer urea placement zones in a study in Niger. Urine and fertilizer solutions each containing 400 mg N (800 kg N/ha) were spread onto individual plots covering a surface...

Enlace original: https://cgspace.cgiar.org/handle/10568/32871

Investigación en Agricultura
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Somda, Z.C. ,  Powell, J.M. ,  Bationo, B. André ,  [Soil PH and nitrogen changes following cattle and sheep urine deposition] ,  Soil PH and nitrogen changes following cattle and sheep urine deposition
Journal Article 2011

Autor: Vanlauwe, Bernard Kihara, Job Chivenge, P.P. Pypers, Pieter Coe, R. Six, Johan

Traditionally, crop production in sub-Saharan Africa (SSA) depends primarily on mining soil nutrients. Integrated Soil Fertility Management (ISFM) is an approach for intensifying agriculture in SSA that aims at maximizing the agronomic efficiency (AE) of applied nutrient inputs. ISFM contains the...

Enlace original: https://cgspace.cgiar.org/handle/10568/43164

Investigación en Agricultura
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Vanlauwe, Bernard ,  Kihara, Job ,  Chivenge, P.P. ,  Pypers, Pieter ,  Coe, R. ,  Six, Johan ,  [Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management] ,  Agronomic use efficiency of N fertilizer in maize-based systems in sub-Saharan Africa within the context of integrated soil fertility management
Journal Article 2006

Autor: Mtambanengwe, F. Mapfumo, Paul Vanlauwe, Bernard

Major challenges for combined use of organic and mineral nutrient sources in smallholder agriculture include variable type and quality of the resources, their limited availability, timing of their relative application and the proportions at which the two should be combined. Short-term nutrient su...

Enlace original: https://cgspace.cgiar.org/handle/10568/43283

Investigación en Agricultura
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Mtambanengwe, F. ,  Mapfumo, Paul ,  Vanlauwe, Bernard ,  [Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe] ,  Comparative short-term effects of different quality organic resources on maize productivity under two different environments in Zimbabwe
Journal Article 2011

Autor: Chivenge, P.P. Vanlauwe, Bernard Gentile, R Six, Johan

Aggregation and stabilization of soil organic C (SOC) and N are highly dependent on soil texture and addition of organic resources (ORs). While OR quality may influence SOC and N stabilization within aggregates, the simultaneous addition of N-fertilizers may enhance OR decomposition resulting in ...

Enlace original: https://cgspace.cgiar.org/handle/10568/43286

Investigación en Agricultura
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Chivenge, P.P. ,  Vanlauwe, Bernard ,  Gentile, R ,  Six, Johan ,  [Comparison of organic versus mineral resource effects on short-term aggregate carbon and nitrogen dynamics in a sandy soil versus a fine textured soil] ,  Comparison of organic versus mineral resource effects on short-term aggregate carbon and nitrogen dynamics in a sandy soil versus a fine textured soil
Journal Article 2013-04

Autor: Kamara, A. Ewansiha, S.U. Menkir, A.

Maize (Zea mays L.) is an important food crop in the Guinea savannas of Nigeria. Despite its high production potential, drought, Striga hermonthica parasitsim, and poor soil fertility particularly nitrogen deficiency limit maize production in the savannas. Breeders at IITA have developed drought-...

Enlace original: https://cgspace.cgiar.org/handle/10568/76042

Investigación en Agricultura
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Kamara, A. ,  Ewansiha, S.U. ,  Menkir, A. ,  [Assessment of nitrogen uptake and utilization in drought tolerant and Striga resistant tropical maize varieties] ,  Assessment of nitrogen uptake and utilization in drought tolerant and Striga resistant tropical maize varieties
Journal Article 2017-09-12

Autor: Karwat, Hannes Moreta, Danilo Arango, Jacobo Núñez, Jonathan Rao, Idupulapati M. Rincón, Álvaro Rasche, Frank Cadisch, Georg

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...

Enlace original: https://cgspace.cgiar.org/handle/10568/83523

Investigación en Agricultura
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Karwat, Hannes ,  Moreta, Danilo ,  Arango, Jacobo ,  Núñez, Jonathan ,  Rao, Idupulapati M. ,  Rincón, Álvaro ,  Rasche, Frank ,  Cadisch, 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
Journal Article 2006

Autor: Meseka, S.K. Menkir, A. Elhassan, A. Ibrahim, S.S. Ajala, S. Kamara, A.

High cost of nitrogen fertilizer coupled with frequent occurrence of drought has forced many maize (Zea mays L.) growers in sub-Saharan Africa to either apply fertilizer below optimal dose or no fertilizer to their maize fields. The objectives of this study were to (i) compare the performance of ...

Enlace original: https://cgspace.cgiar.org/handle/10568/100069

Investigación en Agricultura
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Meseka, S.K. ,  Menkir, A. ,  Elhassan, A. ,  Ibrahim, S.S. ,  Ajala, S. ,  Kamara, A. ,  [Responses of maize hybrids developed for drought tolerance to low soil nitrogen] ,  Responses of maize hybrids developed for drought tolerance to low soil nitrogen

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