Abstract
Small-scale crop production in many parts of Tanzania is constrained by many problems among which soil fertility degradation is a major problem. Over 80% of cassava (Manihot esculenta) production in Tanzania is done by the small-scale farmers who continuously cultivate their fields, but use limited inputs to restore depleted plant nutrients. The objective of this study was to examine the best legume species that could be incorporated in cassava (Manihot esculenta) production systems under farmers’ conditions and result in increase in soil fertility and crop yields. Mucuna pruriens and Canavalia ensiformis were either incorporated with cassava (Manihot esculenta) or planted as sole crop in rotation with cassava. Mucuna pruriens and Canavalia ensiformis were found to produce almost similar amount of biomass. The two legumes, however, produced higher biomass in rotation than intercropping system. The amount of biomass produced by Mucuna pruriens and Canavalia ensiformis in rotation system was 6.28 t·ha-1 and 5.31 t·ha-1, respectively. The Mucuna use represents an input of nitrogen into the soil which simulates a saving cost of 181.42 and 141.96 US$ ha-1. In the first year, cassava root yields were significantly increased (p -1) by the use of intercropping of cassava (Manihot esculenta) with Mucuna pruriens (2.41 t·ha-1) and or Canavalia ensiformis (2.25 t·ha-1). Intercropping and rotation of cassava with legumes increase cassava yield and represent a sustainable alternative to reduce the farms’ dependence on external inputs and to enhance inherent soil fertility.
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Claims 8
Claim · model-written summary
Mucuna pruriens produced 6.28 t·ha-1 of biomass in the rotation system.
- Taxon
- Mucuna pruriens
.jpg?width=60)
Mucuna pruriense0 - Treatment
- rotation systeme0
- Outcome
- amount of biomasse0
- Value
- 6.28 t·ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The amount of biomass produced by Mucuna pruriens and Canavalia ensiformis in rotation system was 6.28 t·ha-1 and 5.31 t·ha-1, respectively”
Claim · model-written summary
Canavalia ensiformis produced 5.31 t·ha-1 of biomass in the rotation system.
- Taxon
- Canavalia ensiformis
Canavalia ensiformise0 - Treatment
- rotation systeme0
- Outcome
- amount of biomasse0
- Value
- 5.31 t·ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of biomass produced by Mucuna pruriens and Canavalia ensiformis in rotation system was 6.28 t·ha-1 and 5.31 t·ha-1, respectively”
Claim · model-written summary
Mucuna pruriens produced higher biomass in rotation than in intercropping.
- Taxon
- Mucuna pruriensMucuna pruriense2
- Treatment
- rotatione1
- Outcome
- biomasse1
- Direction
- highere1
- Comparator
- intercropping systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The two legumes, however, produced higher biomass in rotation than intercropping system”
e2“Mucuna pruriens and Canavalia ensiformis were found to produce almost similar amount of biomass”
Claim · model-written summary
Canavalia ensiformis produced higher biomass in rotation than in intercropping.
- Taxon
- Canavalia ensiformisCanavalia ensiformise2
- Treatment
- rotatione1
- Outcome
- biomasse1
- Direction
- highere1
- Comparator
- intercropping systeme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The two legumes, however, produced higher biomass in rotation than intercropping system”
e2“Mucuna pruriens and Canavalia ensiformis were found to produce almost similar amount of biomass”
Claim · model-written summary
Mucuna use as a nitrogen input simulates a saving cost of 181.42 and 141.96 US$ ha-1.
MucunaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The Mucuna use represents an input of nitrogen into the soil which simulates a saving cost of 181.42 and 141.96 US$ ha-1”
Claim · model-written summary
Intercropping cassava with Mucuna pruriens significantly increased cassava root yield in the first year (2.41 t·ha-1).
- Taxon
- cassava
Manihot esculentae4 - Treatment
- intercropping of cassava (Manihot esculenta) with Mucuna pruriense5
- Outcome
- cassava root yieldse4
- Direction
- increasede4
- Value
- 2.41 t·ha-1e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In the first year, cassava root yields were significantly increased”
e5“by the use of intercropping of cassava (Manihot esculenta) with Mucuna pruriens (2.41 t·ha-1)”
Claim · model-written summary
Intercropping cassava with Canavalia ensiformis significantly increased cassava root yield in the first year (2.25 t·ha-1).
- Taxon
- cassavaManihot esculentae4
- Treatment
- Canavalia ensiformise6
- Outcome
- cassava root yieldse4
- Direction
- increasede4
- Value
- 2.25 t·ha-1e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“In the first year, cassava root yields were significantly increased”
e6“and or Canavalia ensiformis (2.25 t·ha-1)”
Claim · model-written summary
Intercropping and rotation of cassava with legumes represent a sustainable alternative that reduces farms’ dependence on external inputs.
- Taxon
- cassavaManihot esculentae7
- Outcome
- a sustainable alternative to reduce the farms’ dependence on external inputse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Intercropping and rotation of cassava with legumes increase cassava yield and represent a sustainable alternative to reduce the farms’ dependence on external inputs”
The same questions in other papers
Mucuna pruriens · yield · Manihot esculenta (cassava)Results agree
1 paper in the same direction as this paper
- positive
Canavalia ensiformis · yield · Manihot esculenta (cassava)Results agree
1 paper in the same direction as this paper
- positive
intercropping · yield · Manihot esculenta (cassava)Results differ
47 papers in the same direction as this paper · 28 in the opposite direction · 2 reporting no difference from an alternative
- positive
- negative
- negative
74 papers more in this group
See all 78 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.