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Effect of ramial wood amendment on sorghum production and topsoil quality in a Sudano-Sahelian ecosystem (central Burkina Faso)
- Source :
- Agroforestry Systems, Agroforestry Systems, Springer Verlag, 2015, 89 (1), pp.81-93. ⟨10.1007/s10457-014-9743-0⟩, Agroforestry Systems, 2015, 89 (1), pp.81-93. ⟨10.1007/s10457-014-9743-0⟩
- Publication Year :
- 2015
- Publisher :
- HAL CCSD, 2015.
-
Abstract
- Erratum paru dans Agroforestry Systems = ISSN 0167-4366. - (2015)vol.89:n°1 p. 95-96. In Sudano-Sahelian agriculture, organic amendments are often limited by resource availability. Small branches (ramial wood, RW) represent an organic resource found in many landscapes but little is known about their effects. This field trial (2007-2009) studied the effects of RW or straw at low application rate (0.69 Mg C ha?1 year?1) on topsoil carbon (C), nitrogen (N) and available phosphorus (P, Pav), termite cast abundance, and sorghum yield. Straw and RW were chopped and either buried (StBu, WoBu) or mulched (StMu, WoMu). Mineral fertilizers were added to straw so that RW- and straw-amended plots received similar applications of C, N, P, and potassium. Another treatment had RW buried with additional N (WoBuN), and there was a control (Ctrl). Branches came from Piliostigma reticulatum, very common in the area. The treatments had little significant effect on topsoil and crop, owing to the low application rate and spatial variability. However, Pav was significantly lower with buried than mulched amendments in 2009, and decreased significantly over time in Ctrl and with buried amendments. Topsoil C also decreased significantly with time in WoMu. Significantly more termite casts were observed with RW. The sorghum yield averaged 0.87 Mg DM ha?1 in 2007 and then decreased. The treatments affected yield significantly in 2008 only: it was higher in WoBuN and StBu than in Ctrl. In 2009, the yield was mainly affected by initial topsoil Pav. These results suggest that RW stimulated biological activity, leading to P immobilization and C mineralization, but had little effect on yields.
- Subjects :
- 010504 meteorology & atmospheric sciences
F08 - Systèmes et modes de culture
termites
forêt tropicale
01 natural sciences
Mineralization (biology)
tropical dry Africa
Minéralisation
soil phosphorus
soil carbon
Organic amendments
Engrais organique
2. Zero hunger
Litière végétale
Forestry
04 agricultural and veterinary sciences
Sorghum bicolor
Straw
6. Clean water
Rendement des cultures
[SDE]Environmental Sciences
Branche
P33 - Chimie et physique du sol
Fixation de l'azote
Amendment
chemistry.chemical_element
Biology
Fertilisation
Crop
Fertilité du sol
Matière organique
Arbre forestier
0105 earth and related environmental sciences
Topsoil
Phosphorus
Impact sur l'environnement
Soil carbon
15. Life on land
Sorghum
biology.organism_classification
K10 - Production forestière
chemistry
Agronomy
branches
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Agronomy and Crop Science
Subjects
Details
- Language :
- English
- ISSN :
- 01674366 and 15729680
- Database :
- OpenAIRE
- Journal :
- Agroforestry Systems, Agroforestry Systems, Springer Verlag, 2015, 89 (1), pp.81-93. ⟨10.1007/s10457-014-9743-0⟩, Agroforestry Systems, 2015, 89 (1), pp.81-93. ⟨10.1007/s10457-014-9743-0⟩
- Accession number :
- edsair.doi.dedup.....9711425bcf7ee35ccd4b48491305f590