Abstract
Studying the dynamics of soil organic carbon (SOC) is important for understanding the C stabilization into different pools. Carbon sequestration in soils has the potential to curb global warming besides maintaining sustainability of agricultural system under tropical and subtropical climate. Thus, a 14-year old experiment was used to assess the impact of double rice cropping system with manuring and grades of fertilization on SOC sequestration and crop yield sustainability in an Inceptisol in southern India. There was significant decrease (p<0.05) in bulk density with increasing using organics over control. Sole FYM applied plots showed greater amount of C sequestration (3.9 Mg ha-1) followed by RDF+FYM (2.4 Mg ha-1) > RDF (1.1 Mg ha-1) > 150% RDF (1.0Mg ha-1) > fallow (0.3 Mg ha-1), but depleted in 50% RDF (-0.28 Mg ha-1) and control (-1.1 Mg ha-1). The increased dose of fertilization/ N increased amount of C sequestrated, followed sigmoid curve pattern. RDF+FYM treatment showed greater crop yield sustainability with good benefit: cost ratio.
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Claims 11
Claim · model-written summary
Increasing organics significantly decreased soil bulk density relative to control.
- Taxon
- Rice
Oryza sativat0 - Treatment
- organicse0
- Outcome
- bulk densitye0
- Direction
- decreasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was significant decrease (p<0.05) in bulk density with increasing using organics over control”
t0“Double Rice Cultivation”
Claim · model-written summary
Sole FYM plots sequestered 3.9 Mg ha-1 of carbon.
- Taxon
- RiceOryza sativat0
- Treatment
- Sole FYMe0
- Outcome
- C sequestratione0
- Direction
- greatere0
- Value
- 3.9 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sole FYM applied plots showed greater amount of C sequestration (3.9 Mg ha-1)”
t0“Double Rice Cultivation”
Claim · model-written summary
RDF+FYM plots sequestered 2.4 Mg ha-1 of carbon.
- Taxon
- RiceOryza sativat0
- Treatment
- RDF+FYMe0
- Outcome
- C sequestratione1
- Value
- 2.4 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDF+FYM (2.4 Mg ha-1)”
e1“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
RDF plots sequestered 1.1 Mg ha-1 of carbon.
- Taxon
- RiceOryza sativat0
- Treatment
- RDFe0
- Outcome
- C sequestratione1
- Value
- 1.1 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDF (1.1 Mg ha-1)”
e1“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
150% RDF plots sequestered 1.0Mg ha-1 of carbon.
- Taxon
- RiceOryza sativat0
- Treatment
- 150% RDFe0
- Outcome
- C sequestratione1
- Value
- 1.0Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“150% RDF (1.0Mg ha-1)”
e1“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
Fallow plots sequestered 0.3 Mg ha-1 of carbon.
- Taxon
- RiceOryza sativat0
- Treatment
- fallowe0
- Outcome
- C sequestratione1
- Value
- 0.3 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fallow (0.3 Mg ha-1)”
e1“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
Carbon was depleted by -0.28 Mg ha-1 under 50% RDF.
- Taxon
- RiceOryza sativat0
- Treatment
- 50% RDFe0
- Outcome
- C sequestratione1
- Direction
- depletede0
- Value
- -0.28 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“depleted in 50% RDF (-0.28 Mg ha-1)”
e1“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
Carbon was depleted by -1.1 Mg ha-1 in control plots.
- Taxon
- RiceOryza sativat0
- Treatment
- controle0
- Outcome
- C sequestratione2
- Direction
- depletede1
- Value
- -1.1 Mg ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“control (-1.1 Mg ha-1)”
e1“but depleted in 50% RDF (-0.28 Mg ha-1) and control (-1.1 Mg ha-1)”
e2“Sole FYM applied plots showed greater amount of C sequestration”
t0“Double Rice Cultivation”
Claim · model-written summary
Increasing fertilization or nitrogen increased carbon sequestration in a sigmoid pattern.
- Taxon
- RiceOryza sativat0
- Treatment
- increased dose of fertilization/ Ne0
- Outcome
- C sequestratede0
- Direction
- increasede0
- Qualifier
- sigmoid curve patterne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The increased dose of fertilization/ N increased amount of C sequestrated, followed sigmoid curve pattern”
t0“Double Rice Cultivation”
Claim · model-written summary
RDF+FYM had greater crop yield sustainability.
- Taxon
- RiceOryza sativat0
- Treatment
- RDF+FYMe0
- Outcome
- crop yield sustainabilitye0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDF+FYM treatment showed greater crop yield sustainability with good benefit: cost ratio”
t0“Double Rice Cultivation”
Claim · model-written summary
RDF+FYM had a good benefit:cost ratio.
- Taxon
- RiceOryza sativat0
- Treatment
- RDF+FYMe0
- Outcome
- benefit: cost ratioe0
- Qualifier
- goode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RDF+FYM treatment showed greater crop yield sustainability with good benefit: cost ratio”
t0“Double Rice Cultivation”
The same questions in other papers
fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- no effect
- negative
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See all 3,455 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.