AURIFERE
PORTAIL DOCUMENTAIRE DE L'INSTITUT SENEGALAIS DE RECHERCHES AGRICOLES
Elaboré par
L’Unité d’Information et de Valorisation des Résultats de la Recherche (UNIVAL)
![](./styles/genbib/images/BU.jpg)
'Un Accès Unique aux Ressources d’Information
et aux Fonds documentaires pour une Recherche d’Excellence
'
A partir de cette page vous pouvez :
Détail de l'auteur
Documents disponibles écrits par cet auteur
Affiner la recherche
Exemplaires
Disponibilité |
---|
CN0102996 | F080- KHO | Rapport | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
![Cliquer pour Visualiser - URL Cliquer pour Visualiser - URL](./vig_num.php?explnum_id=889) Cliquer pour VisualiserURL | | |
Comparaison de trois sources de potassium sur riz en sol sableux acide de plaine [texte imprimé] / Mamadou Khouma, Auteur . - Bambey (Sénégal) : ISRA/CNRA, 1979 . - 19 p. : : bibl., tabl., 14 graph. Langues : Français ( fre)
|
Exemplaires
Disponibilité |
---|
CN0102995 | 330-KHO | Rapport | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
![Cliquer pour Visualiser - URL Cliquer pour Visualiser - URL](./vig_num.php?explnum_id=888) Cliquer pour VisualiserURL | | |
![détail](./getgif.php?nomgif=plus)
/ Moussa Sy
Renforcer la résilience des systèmes agricoles urbaines : Evaluer l'agriculture urbaine te périurbaine à Dakar, Sénégal [texte imprimé] / Moussa Sy, Auteur ; Mamadou Khouma, Auteur ; Marie Sophie Gueth Ndong, Auteur ; Ndèye Yacine Badiane, Auteur ; Youga Niang, Auteur ; Mohamed Omar Diagne, Auteur ; Mouhamadou Lamine Dial, Auteur ; Idy Niang, Auteur ; Ousseynou Diop, Auteur . - Naîrobie (Kenya) : Programme des Nations Unies pour l'Environnement, 2014 . - 59 p. Document non numérisé Langues : Français ( fre)
|
Exemplaires
Disponibilité |
---|
PV1500008 | M500-SYM | Publication | LNRPV | Rayons | Exclu du prêt |
Agriculture Ecosystems and Environment, N° 128. Regional carbon stocks and dynamics in native woody shrub communities of Senegal’s Peanut Basin [texte imprimé] / A. Lufafa, Auteur ; J. Bolte, Auteur ; D. Wright, Auteur ; Mamadou Khouma, Auteur ; I. Diedhiou, Auteur ; Richard P. Dick, Auteur ; F. Kizito, Auteur ; E. L Dossa, Auteur ; J.S. Noller, Auteur . - [s.d.] . - 11 p. Langues : Anglais ( eng) Catégories : | RESSOURCES NATURELLES ET ENVIRONNEMENT
| Index. décimale : | P340-Biologie et biochimie du sol | Résumé : | Estimating regional carbon (C) stocks and understanding their dynamics is crucial, both from the perspective of sustainable landscape management and global change feedback. This study combines remote sensing techniques and a coupled GIS-CENTURY model to estimate regional biomass C stocks and SOC dynamics for Guiera senegalensis shrub communities in Senegal’s Peanut Basin. A statistical model relating field-measured shrub aboveground biomass C at training plots to satellite image-derived shrub abundances was developed and used to estimate regional biomass C across a major part of the Basin.Regional SOC dynamics were modeled by coupling the CENTURY model and GIS databases. Significant correlation (r = 0.73; p = 0.05) was observed between aboveground biomass C and satellite imagederived shrub abundance at the training plots. Aboveground biomass C stocks ranged from 0.01 to
0.45 Mg ha1 with an approximate total of 247,000 Mg C for the 3060 km2 study area. CENTURY model predictions indicate that C sequestration in these systems is contingent on long-term effectiveness of non-thermal management of shrub residue and that the actual rates depend strongly on soil type and scenarios of future land management. Compared with the traditional ‘‘pruning-burned’’ management practice, returning prunings for 50 years would increase soil C sequestration by 200–350% without fertilization, and increase soil C sequestration by 270–483% under a low (35 kg ha-1 N yr-1;20 kg ha-1 P yr-1) fertilization regime, depending on soil type and climate conditions. These results
indicate that altered land management could contribute to transforming these degraded semiarid agroecosystems from a source to a sink for atmospheric CO2. |
|
Exemplaires
Disponibilité |
---|
CN1800031 | P340-LUF | Publication | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
![Cliquer pour le pdf - URL Cliquer pour le pdf - URL](./vig_num.php?explnum_id=7180) Cliquer pour le pdfURL | | |
Agronomy journal, Vo l u me 1 0 4 , I s s u e 5. Crop Productivity and Nutrient Dynamics in a Shrub (Guiera senegalensis)–Based Farming System of the Sahel [texte imprimé] / E. L Dossa, Auteur ; I. Diedhiou, Auteur ; Mamadou Khouma, Auteur ; M. Sène, Auteur ; A. Lufafa, Auteur ; F. Kizito, Auteur ; Arona Ndiaye Samba Samba, Auteur ; A. N. Badiane, Auteur ; Richard P. Dick, Auteur . - [s.d.] . - 10 p. (1255-1264). Langues : Anglais ( eng) Catégories : | RESSOURCES NATURELLES ET ENVIRONNEMENT
| Mots-clés : | Guiera senegalensis, Fertilisation, Productivité | Index. décimale : | P355-Fertilisation du sol. Besoins en engrais et amendement. Alimentation minérale des plantes. Réponse des plantes | Résumé : | The indigenous shrub, Guiera senegalensis, coexists with crops to varying degrees in farmers’ fields throughout the Sahel, with little known about its biophysical and ecological interactions with soils and crops. Therefore, the objectives were to determine the effect of the presence or absence of shrubs under varying rates of fertilizer on: (i) crop growth and yield, and (ii) soil nutrient dynamics. An experiment from 2004 to 2007 was conducted in northern Senegal where G. senegalensis dominates that had a split-plot factorial design. The presence or absence of G. senegalensis was the main plot and fertilizer rate (0, 0.5, 1 or 1.5 times the recommended N–P–K rate) was the subplot in a peanut (Arachis hypogaea L.)–pearl millet [Pennisetum glaucum (L.) R. Br.] rotation. Averaging over fertilizer rate showed that G. senegalensis had significantly greater crop biomass and yields than no shrub plots (P < 0.05) for all 4 yr. This crop yield response was related to improved nutrient availability (significantly greater for crop N and P uptake in the presence than absence of shrubs in zero fertilizer plots), higher soil quality (elevated particulate organic matter (POM) with shrubs, and a significant correlation of POM with millet yield). Lysimeters below the crop rooting zone had inorganic N levels that were not significantly affected by shrubs compared to no shrub plots, which was attributed to
high variability. Combining the ecological potential to restore degraded landscapes with the agronomic benefits demonstrated here, shows that optimized G. senegalensis–crop systems should be further investigated in farmers’ fields throughout the Sahel. |
|
Exemplaires
Disponibilité |
---|
CN1800026 | P355-DOS | Publication | CNRA/Bambey | Rayons | Exclu du prêt |
Documents numériques
![Cliquer pour le pdf - URL Cliquer pour le pdf - URL](./vig_num.php?explnum_id=7176) Cliquer pour le pdfURL | | |
Permalink
Permalink
Permalink
Permalink
Permalink