Abstract
Salinity and sodicity are the major abiotic constraints that prevail in arid and semi-arid regions. Proper management is required for productive use of this land. Reclamation of sodic and saline-sodic soils is highly site-specific that describes the diverse response of different soils to different amendments. These reclamation practices also alter the plant's physiological and ionic characteristics. This experiment aimed to better understand the physiological and ionic responses of rice crop at different salinity/sodicity levels. A lysimeter experiment was set forth with soil having ECe (dS m-1):SAR (mmol L-1)1/2 levels as 4:20, 8:40, 12:60 and 16:80 and all the levels were treated with organic (farm manure at 25 Mg ha-1) and inorganic (gypsum at 100% soil gypsum requirement (SGR) and sulphuric acid equivalent to 100% SGR) amendments keeping no ammendment as control. Results revealed that the maximum relative increase in physiological attributes (photosynthetic rate, transpiration rate, stomatal conductance and total chlorophyll contents), ionic contents (nitrogen, potassium and K:Na ratio) and growth of rice were recorded with sulphuric acid application followed by gypsum. On an average 25%, 31% and 45% increase in biological yield, plant height and paddy yield, respectively was observed with sulphuric acid application over control. It is concluded that sulphuric acid and gypsum both were the best amendments for reclamation of soil having a low level of salinity/sodicity whereas, at higher salinity/sodicity levels, only sulphuric acid seemed better for improved rice production.
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Claims 8
Claim · model-written summary
Sulphuric acid produced the greatest relative increases in photosynthesis, transpiration, stomatal conductance and chlorophyll.
- Taxon
- rice
Oryza sativae0 - Treatment
- sulphuric acid applicatione0
- Outcome
- photosynthetic rate, transpiration rate, stomatal conductance and total chlorophyll contentse0
- Direction
- maximum relative increasee0
- Comparator
- gypsume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results revealed that the maximum relative increase in physiological attributes (photosynthetic rate, transpiration rate, stomatal conductance and total chlorophyll contents), ionic contents (nitrogen, potassium and K:Na ratio) and growth of rice were recorded with sulphuric acid application followed by gypsum.”
Claim · model-written summary
Sulphuric acid produced greatest relative increases in nitrogen, potassium and K:Na ratio.
- Taxon
- riceOryza sativae0
- Treatment
- sulphuric acid applicatione0
- Outcome
- nitrogen, potassium and K:Na ratioe0
- Direction
- maximum relative increasee0
- Comparator
- gypsume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results revealed that the maximum relative increase in physiological attributes (photosynthetic rate, transpiration rate, stomatal conductance and total chlorophyll contents), ionic contents (nitrogen, potassium and K:Na ratio) and growth of rice were recorded with sulphuric acid application followed by gypsum.”
Claim · model-written summary
Sulphuric acid produced greatest rice growth, followed by gypsum.
- Taxon
- riceOryza sativae0
- Treatment
- sulphuric acid applicatione0
- Outcome
- growth of ricee0
- Direction
- maximum relative increasee0
- Comparator
- gypsume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results revealed that the maximum relative increase in physiological attributes (photosynthetic rate, transpiration rate, stomatal conductance and total chlorophyll contents), ionic contents (nitrogen, potassium and K:Na ratio) and growth of rice were recorded with sulphuric acid application followed by gypsum.”
Claim · model-written summary
Sulphuric acid increased biological yield by 25% over control.
- Taxon
- riceOryza sativat0
- Treatment
- sulphuric acid applicatione0
- Outcome
- biological yielde0
- Direction
- increasee0
- Value
- 25%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On an average 25%, 31% and 45% increase in biological yield, plant height and paddy yield, respectively was observed with sulphuric acid application over control.”
t0“Rice”
Claim · model-written summary
Sulphuric acid increased plant height by 31% over control.
- Taxon
- riceOryza sativat0
- Treatment
- sulphuric acid applicatione0
- Outcome
- plant heighte0
- Direction
- increasee0
- Value
- 31%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On an average 25%, 31% and 45% increase in biological yield, plant height and paddy yield, respectively was observed with sulphuric acid application over control.”
t0“Rice”
Claim · model-written summary
Sulphuric acid increased paddy yield by 45% over control.
- Taxon
- riceOryza sativat0
- Treatment
- sulphuric acid applicatione0
- Outcome
- paddy yielde0
- Direction
- increasee0
- Value
- 45%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On an average 25%, 31% and 45% increase in biological yield, plant height and paddy yield, respectively was observed with sulphuric acid application over control.”
t0“Rice”
Claim · model-written summary
Sulphuric acid and gypsum were considered best at low salinity and sodicity.
- Taxon
- riceOryza sativat0
- Treatment
- sulphuric acid and gypsume0
- Outcome
- best amendments for reclamatione0
- Qualifier
- low level of salinity/sodicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sulphuric acid and gypsum both were the best amendments for reclamation of soil having a low level of salinity/sodicity”
t0“Rice”
Claim · model-written summary
Only sulphuric acid seemed better for rice production at high salinity and sodicity.
- Taxon
- riceOryza sativae0
- Treatment
- sulphuric acide0
- Outcome
- improved rice productione0
- Qualifier
- higher salinity/sodicity levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at higher salinity/sodicity levels, only sulphuric acid seemed better for improved rice production.”
The same questions in other papers
sulfuric acid · yield · Oryza sativa (rice)Results differ
4 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →sulfuric acid · growth · 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.