Abstract
In Côte 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 Côte 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 2 × 0.5 m cassava spacing compared to 1 × 1 m. 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.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Yavo cassava generally outyielded other varieties at both sites.
- Taxon
- cassava
Manihot esculentae0 - Material
- Yavoe0
- Outcome
- out-yieldede0
- Direction
- out-yieldede0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an improved cassava variety (Yavo) generally out-yielded the other varieties at both sites”
Claim · model-written summary
Legumes performed better at the higher fertility site.
Verbatim
e0“Legumes performed better at the higher soil fertility site”
Claim · model-written summary
Legume grain yield was higher at 2 × 0.5 m cassava spacing than at 1 × 1 m.
Verbatim
e0“Legumes performed better at the higher soil fertility site and gave higher grain yield and biological nitrogen fixation in a 2 × 0.5 m cassava spacing compared to 1 × 1 m”
Claim · model-written summary
Legume biological nitrogen fixation was higher at 2 × 0.5 m cassava spacing than at 1 × 1 m.
Verbatim
e0“Legumes performed better at the higher soil fertility site and gave higher grain yield and biological nitrogen fixation in a 2 × 0.5 m cassava spacing compared to 1 × 1 m”
Claim · model-written summary
Cassava response to nutrient amendments varied between sites.
- Taxon
- cassavaManihot esculentae0
- Treatment
- nutrient amendmentse0
- Outcome
- response of cassavae0
- Setting
- sitese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The response of cassava to nutrient amendments varied between sites”
Claim · model-written summary
Fertilizer application avoided cassava yield reduction with legume intercropping.
- Taxon
- cassavaManihot esculentae0
- Treatment
- Fertilizer applicatione0
- Interactor
- legumee0other
- Outcome
- cassava yield reductione0
- Direction
- avoide0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fertilizer application was essential to avoid cassava yield reduction upon legume intercropping”
Claim · model-written summary
Growing legumes substantially increased profitability.
Not reportedComparator
Verbatim
e0“Growing legumes, however, substantially increased profitability”
Claim · model-written summary
The authors recommended better timing of legume sowing, residues and fertilizer application relative to cassava growth.
- Taxon
- cassavaManihot esculentae0
- Outcome
- better synchronization of legume sowing, legume residue and fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“better synchronization of legume sowing, legume residue and fertilizer application in relation to cassava growth phases is needed”
The same questions in other papers
fertilization · yield · Manihot esculenta (cassava)Positive and negative results
140 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- negative
- positive
- no effect
149 papers more in this group
See all 153 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.