Abstract
Cassava production in southern Côte d'Ivoire is constrained by the lack of sustainable farming technologies, such as scarcity of drought and disease resistant cassava varieties, fertilizer and pesticides inputs. This study aims to evaluate the effects of integrated soil fertility management (ISFM) systems on severity of cassava mosaic and anthracnose diseases and on cassava quality parameters (dry matter, starch and hydrogen cyanide contents). To this end, field experiments were carried out at two locations (Dabou and Bingerville) during the 2012-2013 cropping season, as a split-split-plot design with three factors in three replications: cassava genotype (improved varieties Yavo, Bocou 1 and local variety Yace), cassava spacing (2 x 0.5 m and 1 x 1 m), and nutrient management 1 (manure at 5 t ha-1 or mineral NPK fertilizer at 50 kg ha -, and legume intercropping with cowpea or groundnut). Overall, nutrient management did not affect the severity of both cassava diseases. Cassava mosaic disease (CMD) was less prominent for improved varieties Yavo and Bocou 1 (average scores of 1.1 and 1.2, respectively), compared to the local variety Yace which scored 2.8 on a 1-5 scale. In general, the ISFM treatments did not significantly affect cassava tuber quality. HCN content of tubers was decreased when more K was added through manure recommended dose application. Dry matter content was ca. 10% lower in Bingerville (lower fertility site) for both varieties Yace and Bocou 1 in treatment with cowpea and without fertilizer addition. The ISFM system that provided resilience to CMD and sustained quality cassava production appears as a suitable strategy for achieving sustainable intensification of cassava cultivation. Adoption of this technology depends on the ability of smallholder farmers to own or purchase nutrients resources and improved cassava genotypes.
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Claims 8
Claim · model-written summary
Nutrient management did not affect severity of the two cassava diseases.
- Taxon
- Cassava
Manihot esculentat0 - Treatment
- nutrient managemente0
- Outcome
- severity of both cassava diseasese0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrient management did not affect the severity of both cassava diseases”
t0“Severity of Cassava Mosaic and Anthracnose”
Claim · model-written summary
Yavo had a lower cassava mosaic score of 1.1 than Yace at 2.8.
- Taxon
- CassavaManihot esculentat0
- Material
- Yavoe0
- Outcome
- Cassava mosaic disease (CMD)e0
- Direction
- less prominente0
- Value
- 1.1e0
- Qualifier
- 2.8 on a 1-5 scalee0
- Comparator
- Yacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava mosaic disease (CMD) was less prominent for improved varieties Yavo and Bocou 1 (average scores of 1.1 and 1.2, respectively), compared to the local variety Yace which scored 2.8 on a 1-5 scale”
t0“Severity of Cassava Mosaic and Anthracnose”
Claim · model-written summary
Bocou 1 had a lower cassava mosaic score of 1.2 than Yace at 2.8.
- Taxon
- CassavaManihot esculentat0
- Material
- Bocou 1e0
- Outcome
- Cassava mosaic disease (CMD)e0
- Direction
- less prominente0
- Value
- 1.2e0
- Qualifier
- 2.8 on a 1-5 scalee0
- Comparator
- Yacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava mosaic disease (CMD) was less prominent for improved varieties Yavo and Bocou 1 (average scores of 1.1 and 1.2, respectively), compared to the local variety Yace which scored 2.8 on a 1-5 scale”
t0“Severity of Cassava Mosaic and Anthracnose”
Claim · model-written summary
ISFM treatments did not significantly affect cassava tuber quality.
- Taxon
- CassavaManihot esculentat0
- Treatment
- ISFM treatmentse0
- Outcome
- cassava tuber qualitye0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ISFM treatments did not significantly affect cassava tuber quality”
t0“Quality Parameters of Cassava”
Claim · model-written summary
Adding more K through manure reduced HCN content of cassava tubers.
- Taxon
- CassavaManihot esculentat0
- Treatment
- more K was added through manure recommended dose applicatione0
- Outcome
- HCN content of tuberse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HCN content of tubers was decreased when more K was added through manure recommended dose application”
t0“Quality Parameters of Cassava”
Claim · model-written summary
Dry matter was about 10% lower for Yace at Bingerville with cowpea and no fertilizer.
- Taxon
- CassavaManihot esculentat0
- Material
- Yacee0
- Treatment
- cowpea and without fertilizer additione0
- Outcome
- Dry matter contente0
- Direction
- lowere0
- Value
- ca. 10%e0
- Setting
- Bingervillee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter content was ca. 10% lower in Bingerville (lower fertility site) for both varieties Yace and Bocou 1 in treatment with cowpea and without fertilizer addition”
t0“Quality Parameters of Cassava”
Claim · model-written summary
Dry matter was about 10% lower for Bocou 1 at Bingerville with cowpea and no fertilizer.
- Taxon
- CassavaManihot esculentat0
- Material
- Bocou 1e0
- Treatment
- cowpea and without fertilizer additione0
- Outcome
- Dry matter contente0
- Direction
- lowere0
- Value
- ca. 10%e0
- Setting
- Bingervillee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry matter content was ca. 10% lower in Bingerville (lower fertility site) for both varieties Yace and Bocou 1 in treatment with cowpea and without fertilizer addition”
t0“Quality Parameters of Cassava”
Claim · model-written summary
The authors consider this ISFM system suitable for sustainable cassava production.
- Taxon
- cassavaManihot esculentae0
- Outcome
- suitable strategy for achieving sustainable intensification of cassava cultivatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ISFM system that provided resilience to CMD and sustained quality cassava production appears as a suitable strategy for achieving sustainable intensification of cassava cultivation”
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See all 9 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.