Abstract
Abstract Enrichment of soil organic carbon (SOC) stocks through sequestration of atmospheric CO 2 in agricultural soils is important because of its impacts on adaptation to and mitigation of climate change while also improving crop productivity and sustainability. In a long‐term fertility experiment carried out over 27 y under semiarid climatic condition, we evaluated the impact of crop‐residue C inputs through rainfed fingermillet ( Eleusine coracana [L.] Gaertn.) cropping, fertilization, and manuring on crop yield sustainability and SOC sequestration in a Alfisol soil profile up to a depth of 1 m and also derived the critical value of C inputs for maintenance of SOC. Five treatments, viz., control, farmyard manure (FYM) 10 Mg ha –1 , recommended dose of NPK (50 : 50 : 25 kg N, P 2 O 5 , K 2 O ha –1 ), FYM 10 Mg ha –1 + 50% recommended dose of NPK, and FYM 10 Mg ha –1 + 100% recommended dose of NPK imposed in a randomized block design replicated four times. Application of FYM alone or together with mineral fertilizer resulted in a higher C input and consequently built up a higher C stock. After 27 y, higher profile SOC stock (85.7 Mg ha –1 ), C build up (35.0%), and C sequestration (15.4 Mg C ha –1 ) was observed with the application of 10 Mg FYM ha –1 along with recommended dose of mineral fertilizer and these were positively correlated with cumulative C input and well reflected in sustainable yield index (SYI). For sustenance of SOC level (zero change due to cropping) a minimum quantity of 1.13 Mg C is required to be added per hectare per annum as inputs. While the control lost C, the application of mineral fertilizer served to maintain the priori C stock. Thus, the application of FYM increased the C stock, an effect which was even enhanced by additional amendment of mineral fertilizer. We conclude that organic amendments contribute to C sequestration counteracting climate change and at the same time improve soil fertility in the semiarid regions of India resulting in higher and more stable yields.
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Claims 10
Claim · model-written summary
Farmyard manure alone or with mineral fertilizer increased carbon input and soil carbon stock.
- Taxon
- finger‐millet
Eleusine coracanat0 - Treatment
- FYM alone or together with mineral fertilizere0
- Outcome
- C input and consequently built up a higher C stocke0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of FYM alone or together with mineral fertilizer resulted in a higher C input and consequently built up a higher C stock”
t0“finger‐millet”
Claim · model-written summary
Manure with recommended mineral fertilizer produced a soil organic carbon stock of 85.7 Mg ha –1 after 27 years.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- 10 Mg FYM ha –1 along with recommended dose of mineral fertilizere0
- Outcome
- profile SOC stocke0
- Direction
- highere0
- Value
- 85.7 Mg ha –1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 27 y, higher profile SOC stock (85.7 Mg ha –1 ), C build up (35.0%), and C sequestration (15.4 Mg C ha –1 ) was observed with the application of 10 Mg FYM ha –1 along with recommended dose of mineral fertilizer”
t0“finger‐millet”
Claim · model-written summary
The same fertilization produced 35.0% carbon buildup.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- 10 Mg FYM ha –1 along with recommended dose of mineral fertilizere0
- Outcome
- C build upe0
- Direction
- highere0
- Value
- 35.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 27 y, higher profile SOC stock (85.7 Mg ha –1 ), C build up (35.0%), and C sequestration (15.4 Mg C ha –1 ) was observed with the application of 10 Mg FYM ha –1 along with recommended dose of mineral fertilizer”
t0“finger‐millet”
Claim · model-written summary
The same fertilization sequestered 15.4 Mg C ha –1.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- 10 Mg FYM ha –1 along with recommended dose of mineral fertilizere0
- Outcome
- C sequestratione0
- Direction
- highere0
- Value
- 15.4 Mg C ha –1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After 27 y, higher profile SOC stock (85.7 Mg ha –1 ), C build up (35.0%), and C sequestration (15.4 Mg C ha –1 ) was observed with the application of 10 Mg FYM ha –1 along with recommended dose of mineral fertilizer”
t0“finger‐millet”
Claim · model-written summary
Soil carbon measures correlated positively with cumulative carbon input and sustainable yield index.
- Taxon
- finger‐milletEleusine coracanat0
- Outcome
- sustainable yield index (SYI)e0
- Direction
- positively correlatede0
- Comparator
- cumulative C inpute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“these were positively correlated with cumulative C input and well reflected in sustainable yield index (SYI)”
t0“finger‐millet”
Claim · model-written summary
Maintaining soil organic carbon required at least 1.13 Mg C per hectare annually.
- Taxon
- finger‐milletEleusine coracanat0
- Outcome
- minimum quantity of 1.13 Mg C is required to be added per hectare per annum as inputse0
- Value
- 1.13 Mg Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For sustenance of SOC level (zero change due to cropping) a minimum quantity of 1.13 Mg C is required to be added per hectare per annum as inputs”
t0“finger‐millet”
Claim · model-written summary
The unfertilized control lost soil carbon.
- Taxon
- finger‐milletEleusine coracanat0
- Outcome
- lost Ce0
- Direction
- loste0
Not reportedMaterial
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While the control lost C”
t0“finger‐millet”
Claim · model-written summary
Mineral fertilizer maintained prior soil carbon stock.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- mineral fertilizere0
- Outcome
- priori C stocke0
- Direction
- maintaine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of mineral fertilizer served to maintain the priori C stock”
t0“finger‐millet”
Claim · model-written summary
Adding mineral fertilizer enhanced manure effects on soil carbon stock.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- additional amendment of mineral fertilizere0
- Outcome
- C stocke0
- Direction
- enhancede0
- Comparator
- application of FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of FYM increased the C stock, an effect which was even enhanced by additional amendment of mineral fertilizer”
t0“finger‐millet”
Claim · model-written summary
Organic amendments were concluded to improve fertility and increase and stabilize yields.
- Taxon
- finger‐milletEleusine coracanat0
- Treatment
- organic amendmentse0
- Outcome
- higher and more stable yieldse0
- Direction
- highere0
- Qualifier
- improve soil fertilitye0
- Setting
- semiarid regions of Indiae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic amendments contribute to C sequestration counteracting climate change and at the same time improve soil fertility in the semiarid regions of India resulting in higher and more stable yields”
t0“finger‐millet”
The same questions in other papers
fertilization · soil: chemistry · Eleusine coracana (finger millet)Results agree
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See all 19 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.