Abstract
Increasing soil phosphorus and organic matter content for crop production while reducing the cost of production are required to facilitate the achievement of green revolution in Africa. Field and pot experiments were laid out during 2012 and 2013 to assess the effects of combined application of Kodjari phosphate rock (PR) and water soluble phosphorus on sorghum yields, P uptake and Lixisol characteristics in the centre west of Burkina Faso. Five P fertilizers treatments (zero P, 100% TSP (triple super phosphate), 100% PR, 50% PR + 50% TSP, 75% PR + 25% TSP) and two cow manure treatments (zero, 5 t ha−1) were tested. In field experiment, 50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012 and 50% in 2013 and P uptake by 30% in both years. Manure had an additive effect on phosphorus fertilizers in increasing sorghum yields and P uptake. In pot experiment, increases of Ca uptake, soil pH and microbial P were observed with the application of 50% PR + 50% TSP. Our results suggest that formulation of fertilizer combining phosphate rock and mineral P would improve sorghum yields and income of smallholders.
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 9
Claim · model-written summary
The 50% PR and 50% TSP mix increased 2012 sorghum yield 30% above control, matching 100% TSP.
- Treatment
- 50% PR + 50% TSPe0
- Outcome
- sorghum yielde0
- Direction
- increasinge0
- Value
- 30%e0
- Qualifier
- in 2012e0
- Comparator
- controle0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012”
Claim · model-written summary
The mix increased 2013 sorghum yield 50% above control, matching 100% TSP.
- Treatment
- 50% PR + 50% TSPe0
- Outcome
- sorghum yielde0
- Direction
- increasinge0
- Value
- 50%e0
- Qualifier
- in 2013e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012 and 50% in 2013”
Claim · model-written summary
The mix increased sorghum P uptake 30% in both years.
- Treatment
- 50% PR + 50% TSPe0
- Outcome
- P uptakee0
- Direction
- increasinge0
- Value
- 30%e0
- Qualifier
- both yearse0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012 and 50% in 2013 and P uptake by 30% in both years”
Claim · model-written summary
Manure added to phosphorus fertilizer increased sorghum yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manure had an additive effect on phosphorus fertilizers in increasing sorghum yields and P uptake.”
Claim · model-written summary
Manure added to phosphorus fertilizer increased sorghum P uptake.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Manure had an additive effect on phosphorus fertilizers in increasing sorghum yields and P uptake.”
Claim · model-written summary
The mixture increased Ca uptake in pots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pot experiment, increases of Ca uptake, soil pH and microbial P were observed with the application of 50% PR + 50% TSP.”
t0“Effectiveness of combined application of Kodjari phosphate rock, water soluble phosphorus fertilizer and manure in a Ferric Lixisol in the centre west of Burkina Faso”
e7“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012”
Claim · model-written summary
The mixture increased soil pH in pots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pot experiment, increases of Ca uptake, soil pH and microbial P were observed with the application of 50% PR + 50% TSP.”
t0“Effectiveness of combined application of Kodjari phosphate rock, water soluble phosphorus fertilizer and manure in a Ferric Lixisol in the centre west of Burkina Faso”
e7“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012”
Claim · model-written summary
The mixture increased microbial P in pots.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In pot experiment, increases of Ca uptake, soil pH and microbial P were observed with the application of 50% PR + 50% TSP.”
t0“Effectiveness of combined application of Kodjari phosphate rock, water soluble phosphorus fertilizer and manure in a Ferric Lixisol in the centre west of Burkina Faso”
e7“50% PR + 50% TSP was as effective as 100% TSP in increasing sorghum yield above the control by 30% in 2012”
Claim · model-written summary
The authors suggest combining phosphate rock and mineral P to improve sorghum yield and smallholder income.
- Treatment
- fertilizer combining phosphate rock and mineral Pe0
- Outcome
- sorghum yields and income of smallholderse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“formulation of fertilizer combining phosphate rock and mineral P would improve sorghum yields and income of smallholders”
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
- negative
- no effect
- no effect
101 papers more in this group
See all 105 papers →phosphorus · soil: chemistry · SorghumPositive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
1 paper more in this group
See all 5 papers →phosphorus · nutrient: content · SorghumPositive and negative results
23 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
21 papers more in this group
See all 25 papers →fertilization · nutrient: content · SorghumPositive and negative results
110 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
114 papers more in this group
See all 118 papers →fertilization · yield · SorghumPositive and negative results
417 papers in the same direction as this paper · 21 in the opposite direction · 7 reporting no difference from an alternative
- no effect
- no effect
- no effect
442 papers more in this group
See all 446 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.