Abstract
Low soil phosphorus (P) availability reduces agricultural production in sub-Saharan Africa. We investigated the effects of Burkina phosphate rock (BPR) and calcined Burkina phosphate rock (CPR) on crop growth and soil properties in Burkina Faso for two seasons, to explore alternative fertilization options. These treatments were compared with commercial inorganic fertilizers such as triple super phosphate (TSP) and NPK complex fertilizer, and three combinations of CPR and TSP. The organic matter (OM) cattle manure compost was added to these treatments, with a sole OM control and an absolute control included for comparison. All treatments outperformed the control, results did not indicate any superiority of CPR over BPR for grain production. The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022. For sorghum, TSP boosted yield by 69% in 2021, while BPR recorded the highest increase of 77% over OM in 2022. 50CPR + 50TSP enhanced soil available P from 2021 to 2022, reaching 5.86 mg kg−1 for cowpea and 0.07 mg kg−1 for sorghum. This favorable outcome suggests that combining CPR and TSP can help reduce inorganic fertilizer amounts for small-scale farmers.
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Claims 9
Claim · model-written summary
All treatments outperformed the control in the cowpea and sorghum trials in Burkina Faso.
- Taxon
- cowpea
Vigna unguiculatae2 - Treatment
- Burkina phosphate rock (BPR) and calcined Burkina phosphate rock (CPR)e1
- Outcome
- outperformede0
- Direction
- outperformede0
- Comparator
- controle0
- Setting
- Burkina Fasoe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All treatments outperformed the control, results did not indicate any superiority of CPR over BPR for grain production”
e1“We investigated the effects of Burkina phosphate rock (BPR) and calcined Burkina phosphate rock (CPR) on crop growth and soil properties in Burkina Faso for two seasons”
e2“The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022”
Claim · model-written summary
Calcined Burkina phosphate rock (CPR) showed no superiority over non-calcined Burkina phosphate rock (BPR) for grain production.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- CPRe0
- Outcome
- grain productione0
- Direction
- no_changeinferrede0
- Comparator
- BPRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All treatments outperformed the control, results did not indicate any superiority of CPR over BPR for grain production”
e2“The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022”
Claim · model-written summary
50CPR + 50TSP increased cowpea yield over OM by 65% in 2021.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- 50CPR + 50TSPe2
- Outcome
- yielde2
- Direction
- increasede2
- Value
- 65%e2
- Qualifier
- in 2021e2
- Comparator
- OMe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022”
Claim · model-written summary
50CPR + 50TSP increased cowpea yield over OM by 38% in 2022.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- 50CPR + 50TSPe2
- Outcome
- yielde2
- Direction
- increasede2
- Value
- 38%e2
- Qualifier
- in 2022e2
- Comparator
- OMe2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022”
Claim · model-written summary
TSP boosted sorghum yield by 69% in 2021.
SorghumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“For sorghum, TSP boosted yield by 69% in 2021, while BPR recorded the highest increase of 77% over OM in 2022”
Claim · model-written summary
BPR recorded the highest sorghum yield increase of 77% over OM in 2022.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“For sorghum, TSP boosted yield by 69% in 2021, while BPR recorded the highest increase of 77% over OM in 2022”
Claim · model-written summary
50CPR + 50TSP enhanced cowpea soil available P from 2021 to 2022, reaching 5.86 mg kg−1.
- Taxon
- cowpeaVigna unguiculatae4
- Treatment
- 50CPR + 50TSPe4
- Outcome
- soil available Pe4
- Direction
- enhancede4
- Value
- 5.86 mg kg−1e4
- Qualifier
- from 2021 to 2022e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“50CPR + 50TSP enhanced soil available P from 2021 to 2022, reaching 5.86 mg kg−1 for cowpea and 0.07 mg kg−1 for sorghum”
Claim · model-written summary
50CPR + 50TSP enhanced sorghum soil available P from 2021 to 2022, reaching 0.07 mg kg−1.
- Treatment
- 50CPR + 50TSPe4
- Outcome
- soil available Pe4
- Direction
- enhancede4
- Value
- 0.07 mg kg−1e4
- Qualifier
- from 2021 to 2022e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“50CPR + 50TSP enhanced soil available P from 2021 to 2022, reaching 5.86 mg kg−1 for cowpea and 0.07 mg kg−1 for sorghum”
Claim · model-written summary
Combining CPR and TSP can help reduce inorganic fertilizer amounts for small-scale farmers.
- Taxon
- cowpeaVigna unguiculatae2
- Treatment
- combining CPR and TSPe5
- Outcome
- reduce inorganic fertilizer amountse5
- Direction
- reducee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The application of 50CPR + 50TSP increased cowpea yield over OM by 65% in 2021 and 38% in 2022”
e5“This favorable outcome suggests that combining CPR and TSP can help reduce inorganic fertilizer amounts for small-scale farmers”
The same questions in other papers
phosphorus · yield · SorghumResults differ
91 papers in the same direction as this paper · 12 in the opposite direction · 1 reporting no difference from an alternative
- positive
- negative
- no effect
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See all 105 papers →phosphorus · yield · Vigna unguiculata (cowpea)Results differ
5 papers in the same direction as this paper · 107 reporting no difference from an alternative
- positive
- positive
- positive
109 papers more in this group
See all 113 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.