Abstract
Objective: To improve soil chemical properties and crops productivity, this study was conducted from 2008 to 2015, on lixisoil in a research station, using reduced soil tillage and leguminous plant cover.Methodology and Results: Three soil tillage practices in main plot (T1 = no tillage with direct sowing, T2 = minimum tillage by soil scarifying with IR12 tool and T3 = conventional tillage with animals drawn plough) were compared and combined to four crops rotation systems, in a split-plot experimental design. Soil chemical characteristics and crops yields were evaluated. The results showed that tillage practices did not influence significantly the soil chemical properties, but soil organic matter contents, nitrogen, phosphorus and potassium were lower in conventional tillage plots (T3) compared to minimum tillage (T2) and no tillage (direct sowing). Rotations did not significantly influence nitrogen and soil organic matter contents, even the leguminous mucuna insertion in the rotation during three years. After 8 years, crops rotations improved significantly cotton (Gossypium hirsutum L.) and maize (Zea mays L.) yields. The yield increases were respectively +7, +23 and +43%, with one, two and three years of mucuna insertion into rotations. No tillage (direct sowing) and minimum tillage (scarifying with IR12) were as efficacy as conventional tillage on Mucuna and maize yields whereas cotton yield, with minimum tillage (T2) was significantly higher than no tillage (T1).Conclusion and application of results: The study showed that conventional tillage with mouldboard plough, appear to be the soil tillage practice, which led to soil properties degradation. Crops rotations with the use of leguminous mucuna allowed reducing soil N contents decreases. No tillage (direct sowing) and minimum tillage (scarifying with IR12) showed same efficacy with conventional tillage on cotton, maize and mucuna yields, which were improved after mucuna insertion into crops rotations. Therefore, tillage suppression or its reduction combined to one year leguminous cover plant insertion in rotation (mucuna-cotton-maize) could be used for crops diversification and sustainable productivity in cotton and cereals based production systems.Keywords: Tillage practices, crops rotations, plant cover, soil fertility, yields, Burkina Faso
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Claims 13
Claim · model-written summary
Tillage practices did not significantly influence soil chemical properties.
- Treatment
- tillage practicese0
- Outcome
- soil chemical propertiese0
- Direction
- did not influence significantlye0
Not reportedTaxonComparator
Verbatim
e0“tillage practices did not influence significantly the soil chemical properties”
Claim · model-written summary
Soil organic matter, nitrogen, phosphorus and potassium were lower under conventional tillage than under minimum tillage and no tillage.
- Treatment
- conventional tillagee0
- Outcome
- soil organic matter contents, nitrogen, phosphorus and potassiume0
- Direction
- lowere0
- Comparator
- minimum tillage (T2) and no tillage (direct sowing)e0
Not reportedTaxon
Verbatim
e0“soil organic matter contents, nitrogen, phosphorus and potassium were lower in conventional tillage plots (T3) compared to minimum tillage (T2) and no tillage (direct sowing)”
Claim · model-written summary
Crop rotations did not significantly influence nitrogen and soil organic matter contents.
- Treatment
- Rotationse0
- Outcome
- nitrogen and soil organic matter contentse0
- Direction
- did not significantly influencee0
Not reportedTaxonComparator
Verbatim
e0“Rotations did not significantly influence nitrogen and soil organic matter contents”
Claim · model-written summary
After 8 years, crop rotations significantly improved cotton yield.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- crops rotationse0
- Outcome
- yieldse0
- Direction
- improved significantlye0
- Qualifier
- After 8 yearse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 8 years, crops rotations improved significantly cotton (Gossypium hirsutum L.) and maize (Zea mays L.) yields”
Claim · model-written summary
After 8 years, crop rotations significantly improved maize yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 8 years, crops rotations improved significantly cotton (Gossypium hirsutum L.) and maize (Zea mays L.) yields”
Claim · model-written summary
Yield increase of +7 with one year of mucuna insertion into rotations; crop not resolved in the abstract.
- Treatment
- mucuna insertion into rotationse0
- Outcome
- yield increasese0
- Direction
- increasese0
- Value
- +7e0
- Qualifier
- with one, two and three years of mucuna insertion into rotationse0
Not reportedTaxonComparator
Verbatim
e0“The yield increases were respectively +7, +23 and +43%, with one, two and three years of mucuna insertion into rotations”
Claim · model-written summary
Yield increase of +23 with two years of mucuna insertion into rotations; crop not resolved in the abstract.
- Treatment
- mucuna insertion into rotationse0
- Outcome
- yield increasese0
- Direction
- increasese0
- Value
- +23e0
- Qualifier
- with one, two and three years of mucuna insertion into rotationse0
Not reportedTaxonComparator
Verbatim
e0“The yield increases were respectively +7, +23 and +43%, with one, two and three years of mucuna insertion into rotations”
Claim · model-written summary
Yield increase of +43% with three years of mucuna insertion into rotations; crop not resolved in the abstract.
- Treatment
- mucuna insertion into rotationse0
- Outcome
- yield increasese0
- Direction
- increasese0
- Value
- +43%e0
- Qualifier
- with one, two and three years of mucuna insertion into rotationse0
Not reportedTaxonComparator
Verbatim
e0“The yield increases were respectively +7, +23 and +43%, with one, two and three years of mucuna insertion into rotations”
Claim · model-written summary
No tillage and minimum tillage were as effective as conventional tillage for Mucuna yield.
- Treatment
- No tillage (direct sowing) and minimum tillage (scarifying with IR12)e0
- Outcome
- yieldse0
- Direction
- were as efficacy ase0
- Comparator
- conventional tillagee0
MucunaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No tillage (direct sowing) and minimum tillage (scarifying with IR12) were as efficacy as conventional tillage on Mucuna and maize yields”
Claim · model-written summary
No tillage and minimum tillage were as effective as conventional tillage for maize yield.
- Treatment
- No tillage (direct sowing) and minimum tillage (scarifying with IR12)e0
- Outcome
- yieldse0
- Direction
- were as efficacy ase0
- Comparator
- conventional tillagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No tillage (direct sowing) and minimum tillage (scarifying with IR12) were as efficacy as conventional tillage on Mucuna and maize yields”
Claim · model-written summary
Minimum tillage (T2) significantly increased cotton yield compared with no tillage (T1).
- Taxon
- cottonGossypium hirsutume0
- Treatment
- minimum tillage (T2)e0
- Outcome
- cotton yielde0
- Direction
- significantly highere0
- Comparator
- no tillage (T1)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“whereas cotton yield, with minimum tillage (T2) was significantly higher than no tillage (T1)”
Claim · model-written summary
Tillage suppression or reduction combined with one year of leguminous cover in rotation could be used for crop diversification and sustainable productivity.
- Taxon
- cottonGossypium hirsutume0
- Outcome
- crops diversification and sustainable productivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillage suppression or its reduction combined to one year leguminous cover plant insertion in rotation (mucuna-cotton-maize) could be used for crops diversification and sustainable productivity”
Claim · model-written summary
Crop rotations with leguminous mucuna reduced soil N contents, as the conclusion states.
Not reportedTaxonComparator
Verbatim
e0“Crops rotations with the use of leguminous mucuna allowed reducing soil N contents decreases”
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286 papers in the same direction as this paper · 812 reporting no difference from an alternative
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See all 1,099 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.