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Assessment of low-input technologies to improve productivity of early harvested cassava in Côte d'Ivoire

Jean-Baptiste Gnélié Gnahoua UGent, Djétchi Jean Baptiste Ettien, Boni N'zué, Stefaan De Neve UGent and Pascal Boeckx UGent (2016) AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS. 40(9). p.941-964
abstract
In Cote d'Ivoire, smallholder farmers cultivate cassava on poor, highly weathered soils without improved varieties or fertilizer inputs. Land pressure combined with high demand result in premature harvests and low yields. Furthermore, subsistence agriculture limits the adoption of input-intensive technologies. This study aimed at identifying integrated soil fertility management systems for increasing cassava productivity and profitability in two locations in southern Cote d'Ivoire. The integrated technical interventions included improved cassava genotypes and modified spacing, legume intercropping, and application of fertilizer at moderate doses. Overall, an improved cassava variety (Yavo) generally out-yielded the other varieties at both sites. Legumes performed better at the higher soil fertility site and gave higher grain yield and biological nitrogen fixation in a 2x0.5m cassava spacing compared to 1x1m. The response of cassava to nutrient amendments varied between sites, suggesting the need for site-specific adaptations. Fertilizer application was essential to avoid cassava yield reduction upon legume intercropping as a result of competition for nutrients and N immobilization and delayed re-mineralization of legume residues. Growing legumes, however, substantially increased profitability. Hence, better synchronization of legume sowing, legume residue and fertilizer application in relation to cassava growth phases is needed.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Arachis hypogaea, biological N-2 fixation, integrated soil fertility management, Manihot esculenta, Vigna unguiculata, West Africa, NITROGEN-FIXATION, LEGUMES, SOIL, INTENSIFICATION, MANAGEMENT, ABUNDANCE, SYSTEMS, LIGNIN
journal title
AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS
Agroecol. Sustain. Food Syst.
volume
40
issue
9
pages
941 - 964
Web of Science type
J
Web of Science id
000384463200004
JCR category
AGRICULTURE, MULTIDISCIPLINARY
JCR impact factor
0.911 (2016)
JCR rank
23/56 (2016)
JCR quartile
2 (2016)
ISSN
2168-3565
DOI
10.1080/21683565.2016.1209610
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
8501949
handle
http://hdl.handle.net/1854/LU-8501949
date created
2017-01-13 11:15:30
date last changed
2017-02-03 13:10:52
@article{8501949,
  abstract     = {In Cote d'Ivoire, smallholder farmers cultivate cassava on poor, highly weathered soils without improved varieties or fertilizer inputs. Land pressure combined with high demand result in premature harvests and low yields. Furthermore, subsistence agriculture limits the adoption of input-intensive technologies. This study aimed at identifying integrated soil fertility management systems for increasing cassava productivity and profitability in two locations in southern Cote d'Ivoire. The integrated technical interventions included improved cassava genotypes and modified spacing, legume intercropping, and application of fertilizer at moderate doses. Overall, an improved cassava variety (Yavo) generally out-yielded the other varieties at both sites. Legumes performed better at the higher soil fertility site and gave higher grain yield and biological nitrogen fixation in a 2x0.5m cassava spacing compared to 1x1m. The response of cassava to nutrient amendments varied between sites, suggesting the need for site-specific adaptations. Fertilizer application was essential to avoid cassava yield reduction upon legume intercropping as a result of competition for nutrients and N immobilization and delayed re-mineralization of legume residues. Growing legumes, however, substantially increased profitability. Hence, better synchronization of legume sowing, legume residue and fertilizer application in relation to cassava growth phases is needed.},
  author       = {Gnahoua, Jean-Baptiste Gn{\'e}li{\'e} and Ettien, Dj{\'e}tchi Jean Baptiste and N'zu{\'e}, Boni and De Neve, Stefaan and Boeckx, Pascal},
  issn         = {2168-3565},
  journal      = {AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS},
  keyword      = {Arachis hypogaea,biological N-2 fixation,integrated soil fertility management,Manihot esculenta,Vigna unguiculata,West Africa,NITROGEN-FIXATION,LEGUMES,SOIL,INTENSIFICATION,MANAGEMENT,ABUNDANCE,SYSTEMS,LIGNIN},
  language     = {eng},
  number       = {9},
  pages        = {941--964},
  title        = {Assessment of low-input technologies to improve productivity of early harvested cassava in C{\^o}te d'Ivoire},
  url          = {http://dx.doi.org/10.1080/21683565.2016.1209610},
  volume       = {40},
  year         = {2016},
}

Chicago
Gnahoua, Jean-Baptiste Gnélié, Djétchi Jean Baptiste Ettien, Boni N’zué, Stefaan De Neve, and Pascal Boeckx. 2016. “Assessment of Low-input Technologies to Improve Productivity of Early Harvested Cassava in Côte d’Ivoire.” Agroecology and Sustainable Food Systems 40 (9): 941–964.
APA
Gnahoua, J.-B. G., Ettien, D. J. B., N’zué, B., De Neve, S., & Boeckx, P. (2016). Assessment of low-input technologies to improve productivity of early harvested cassava in Côte d’Ivoire. AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS, 40(9), 941–964.
Vancouver
1.
Gnahoua J-BG, Ettien DJB, N’zué B, De Neve S, Boeckx P. Assessment of low-input technologies to improve productivity of early harvested cassava in Côte d’Ivoire. AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS. 2016;40(9):941–64.
MLA
Gnahoua, Jean-Baptiste Gnélié, Djétchi Jean Baptiste Ettien, Boni N’zué, et al. “Assessment of Low-input Technologies to Improve Productivity of Early Harvested Cassava in Côte d’Ivoire.” AGROECOLOGY AND SUSTAINABLE FOOD SYSTEMS 40.9 (2016): 941–964. Print.