Abstract
A significant amount of phosphorus (P) becomes fixed by aluminium (Al) and iron (Fe) in acidic soils, leading to decreased efficiency in P utilization and subsequently lowering crop yield. Enhanced P fertilization offers a potential solution, as the dicarboxylic acid polymer (DCAP) coating on P fertilizer promotes increased plant productivity and more effective P utilization. The improvement achieved through enhanced P fertilization can contribute to higher rice yields in acidic soils, accompanied by an increase in P solubility. The study aimed to determine the impact of DCAP-mixed phosphate fertilizer on P uptake by plants, absorption efficiency, and rice yield. The results demonstrated a significant increase in available P (about 3.5 mg P/kg) when DCAP was used in a greenhouse setting, resulting in elevated yields and total P absorption (ranging from 0.03 to 0.05 grams/pot). However, the addition of 60 kg of phosphate mixed with DCAP has not yet demonstrated a significant increase in available phosphorus in the soil compared to adding just 60 kg of phosphate. The application of phosphate at a dose of 30 kg of P2O5 mixed with DCAP for growth and phosphorus absorption yield results equivalent to using 60 kg of P2O5 without DCAP. Furthermore, the use of DCAP in conjuction with 50% P fertilizer increased P availability by the same amount as that achieved with 100% P fertilizer. Consequently, DCAP reduced chemical P fertilizer in the soil by approximately 50%. However, it is essential to evaluate the effectiveness of mixed phosphate fertilizer (DCAP) under field conditions before recommending its widespread use.
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Claims 8
Claim · model-written summary
DCAP increased available P in the soil by about 3.5 mg P/kg in the greenhouse.
- Taxon
- rice
Oryza sativae4 - Treatment
- DCAPe0
- Outcome
- available Pe0
- Direction
- increasee0
- Value
- about 3.5 mg P/kge0
- Setting
- greenhouse settinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e0“The results demonstrated a significant increase in available P (about 3.5 mg P/kg) when DCAP was used in a greenhouse setting, resulting in elevated yields and total P absorption (ranging from 0.03 to 0.05 grams/pot)”
Claim · model-written summary
DCAP elevated rice yields in the greenhouse.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e0“The results demonstrated a significant increase in available P (about 3.5 mg P/kg) when DCAP was used in a greenhouse setting, resulting in elevated yields and total P absorption (ranging from 0.03 to 0.05 grams/pot)”
Claim · model-written summary
DCAP elevated total P absorption by rice to 0.03 to 0.05 grams per pot.
- Taxon
- riceOryza sativae4
- Treatment
- DCAPe0
- Outcome
- total P absorptione0
- Direction
- elevatede0
- Value
- 0.03 to 0.05 grams/pote0
- Setting
- greenhouse settinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e0“The results demonstrated a significant increase in available P (about 3.5 mg P/kg) when DCAP was used in a greenhouse setting, resulting in elevated yields and total P absorption (ranging from 0.03 to 0.05 grams/pot)”
Claim · model-written summary
Adding 60 kg of phosphate mixed with DCAP did not significantly increase soil available phosphorus compared with 60 kg of phosphate alone.
- Taxon
- riceOryza sativae4
- Treatment
- 60 kg of phosphate mixed with DCAPe5
- Outcome
- available phosphorus in the soile5
- Direction
- increasee5
- Comparator
- 60 kg of phosphatee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e5“However, the addition of 60 kg of phosphate mixed with DCAP has not yet demonstrated a significant increase in available phosphorus in the soil compared to adding just 60 kg of phosphate”
Claim · model-written summary
Phosphate at 30 kg P2O5 mixed with DCAP gave growth and P absorption results equivalent to 60 kg P2O5 without DCAP.
- Taxon
- riceOryza sativae4
- Treatment
- phosphate at a dose of 30 kg of P2O5 mixed with DCAPe6
- Outcome
- growth and phosphorus absorption yield resultse6
- Direction
- equivalente6
- Comparator
- 60 kg of P2O5 without DCAPe6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e6“The application of phosphate at a dose of 30 kg of P2O5 mixed with DCAP for growth and phosphorus absorption yield results equivalent to using 60 kg of P2O5 without DCAP”
Claim · model-written summary
DCAP with 50% P fertilizer increased P availability by the same amount as 100% P fertilizer.
- Taxon
- riceOryza sativae4
- Treatment
- DCAP in conjuction with 50% P fertilizere7
- Outcome
- P availabilitye7
- Direction
- increasede7
- Comparator
- 100% P fertilizere7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e7“the use of DCAP in conjuction with 50% P fertilizer increased P availability by the same amount as that achieved with 100% P fertilizer”
Claim · model-written summary
DCAP reduced the chemical P fertilizer in the soil by approximately 50%.
- Taxon
- riceOryza sativae4
- Treatment
- DCAPe1
- Outcome
- chemical P fertilizer in the soile1
- Direction
- reducede1
- Value
- approximately 50%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e1“DCAP reduced chemical P fertilizer in the soil by approximately 50%”
Claim · model-written summary
The effectiveness of mixed phosphate fertilizer (DCAP) should be evaluated under field conditions before its widespread use is recommended.
- Taxon
- riceOryza sativae4
- Outcome
- evaluate the effectiveness of mixed phosphate fertilizer (DCAP) under field conditionse2
- Qualifier
- before recommending its widespread usee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“contribute to higher rice yields”
e2“it is essential to evaluate the effectiveness of mixed phosphate fertilizer (DCAP) under field conditions before recommending its widespread use”
The same questions in other papers
phosphorus · soil: chemistry · Oryza sativa (rice)Positive and negative results
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See all 475 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.