Abstract
The addition of ameliorant Fe3+ and rock phosphates containing high Fe cation can reduce effect of toxic organic acids, increase peat stability through formation of complex compounds and reduce carbon emission. The research was conducted in the laboratory and green house of the Departement of Soil Science, Faculty of Agriculture, Bogor Agriculture University. Peat samples with hemic degree of decomposition were taken from Riau. Rock phosphates were taken from the rock phosphates of PT. Petrokimia Gresik, Christmas Island phosphates, and Huinan China and FeCl3.6H2O was used as the other Fe3+ source. The aims of the research were to study (a) the effect of the applications of ameliorant Fe3+ and rock phosphates on the P content of plants dan (b) the effect of the application ameliorant Fe3+ and the contribution of Fe cation in rock phosphates in the decrease of carbon emission. The results showed that the P content of plants rice increased 58 – 286 % with the applications of ameliorant Fe3+ and rock phosphates. The estimation of carbon loss through CO2 and CH4 emissions from peats if planted continuously with rice was around 2.5, 2.2 and 2.6 Mg of C ha-1 year-1 respectively in field capacity condition, two times of field capacity condition, and 5 cm of saturated condition. The application of ameliorant Fe3+ and rock phosphates containing high Fe cation increased the stability of peats and reduced the carbon loss around 1.7 Mg of C ha-1 year-1 (64%) in 5 cm of saturated condition, 1,3 Mg of C ha-1 year-1 (58%) in two times of field capacity condition, and 1.0 Mg of C ha-1 year-1 (41%) in field capacity condition.
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Claims 6
Claim · model-written summary
Iron and rock phosphate ameliorants increased rice phosphorus content by 58–286%.
- Taxon
- rice
Oryza sativae0 - Treatment
- applications of ameliorant Fe3+ and rock phosphatese0
- Outcome
- P content of plants ricee0
- Direction
- increasede0
- Value
- 58 – 286 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the P content of plants rice increased 58 – 286 % with the applications of ameliorant Fe3+ and rock phosphates.”
Claim · model-written summary
Estimated carbon loss from rice planted peat was 2.5 Mg C per hectare per year at field capacity.
- Taxon
- riceOryza sativae0
- Outcome
- carbon loss through CO2 and CH4 emissions from peatse0
- Value
- 2.5e0
- Qualifier
- field capacity conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The estimation of carbon loss through CO2 and CH4 emissions from peats if planted continuously with rice was around 2.5, 2.2 and 2.6 Mg of C ha-1 year-1 respectively in field capacity condition, two times of field capacity condition, and 5 cm of saturated condition.”
Claim · model-written summary
Estimated carbon loss was 2.2 Mg C per hectare per year at twice field capacity.
- Taxon
- riceOryza sativae0
- Outcome
- carbon loss through CO2 and CH4 emissions from peatse0
- Value
- 2.2e0
- Qualifier
- two times of field capacity conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The estimation of carbon loss through CO2 and CH4 emissions from peats if planted continuously with rice was around 2.5, 2.2 and 2.6 Mg of C ha-1 year-1 respectively in field capacity condition, two times of field capacity condition, and 5 cm of saturated condition.”
Claim · model-written summary
Estimated carbon loss was 2.6 Mg C per hectare per year under 5 cm saturation.
- Taxon
- riceOryza sativae0
- Outcome
- carbon loss through CO2 and CH4 emissions from peatse0
- Value
- 2.6 Mg of C ha-1 year-1e0
- Qualifier
- 5 cm of saturated conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The estimation of carbon loss through CO2 and CH4 emissions from peats if planted continuously with rice was around 2.5, 2.2 and 2.6 Mg of C ha-1 year-1 respectively in field capacity condition, two times of field capacity condition, and 5 cm of saturated condition.”
Claim · model-written summary
The ameliorants increased peat stability in the rice system.
- Taxon
- Padit0
- Treatment
- application of ameliorant Fe3+ and rock phosphates containing high Fe catione0
- Outcome
- stability of peatse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“The application of ameliorant Fe3+ and rock phosphates containing high Fe cation increased the stability of peats”
t0“Padi”
Claim · model-written summary
Ameliorants reduced carbon loss by 1.7 Mg C per hectare per year, 64%, under 5 cm saturation.
- Taxon
- Padit0
- Treatment
- application of ameliorant Fe3+ and rock phosphates containing high Fe catione0
- Outcome
- carbon losse0
- Direction
- reducede0
- Value
- 1.7 Mg of C ha-1 year-1e0
- Qualifier
- 5 cm of saturated conditione0
Not reportedComparator
Verbatim
e0“The application of ameliorant Fe3+ and rock phosphates containing high Fe cation increased the stability of peats and reduced the carbon loss around 1.7 Mg of C ha-1 year-1 (64%) in 5 cm of saturated condition”
t0“Padi”
The same questions in other papers
phosphate · nutrient: content · Oryza sativa (rice)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
iron(3+) · nutrient: content · Oryza sativa (rice)Results agree
1 paper in the same direction as this paper
- positive
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.