Abstract
A field experiment was conducted at Deras Research Farm, Khurda district, Bhubaneswar, Orissa, India, to evaluate the performance of different rice varieties managed under System of Rice Intensification (SRI) compared with the current transplanting system (CTS). Five rice varieties were used for the study: (i) Khandagiri (early-duration, 90 days); (ii) Lalat (early-medium duration, 110 days); (iii) Surendra (late-medium duration, 130 days); (iv) Hybrid CRHR-7 (late-medium duration, 135 days); and (v) Savitri (long-duration, 145 days). It was seen that SRI practices significantly (p < 0.05) improved the harvest index, percentage of effective tillers, panicle length, and various yield components in all the varieties. SRI hills having an open-canopy structure with higher leaf area index (LAI) resulted in greater light interception than the conventional transplanting methods. At the ripening stage, SRI plants had better root growth and a higher xylem exudation rate than CTS plants. This was associated with higher levels of chlorophyll in the lower leaves and a higher photosynthesis rate. Delayed senescence with enhanced photosynthesis in the lower leaves was also responsible for supplying more assimilates toward the roots for maintaining their higher activity. These features might also contribute to the improvement of grain filling and grain weight in SRI-grown plants as all the varieties performed better in terms of grain yield (12–42% higher) with this alternative management.
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Claims 10
Claim · model-written summary
SRI practices significantly (p < 0.05) improved harvest index, percentage of effective tillers and panicle length in all five rice varieties relative to the current transplanting system.
- Taxon
- rice
Oryza sativat0 - Treatment
- SRI practicese0
- Outcome
- harvest index, percentage of effective tillers, panicle lengthe0
- Direction
- improvede0
- Comparator
- current transplanting system (CTS)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“SRI practices significantly (p < 0.05) improved the harvest index, percentage of effective tillers, panicle length, and various yield components in all the varieties”
e1“compared with the current transplanting system (CTS)”
Claim · model-written summary
SRI practices significantly (p < 0.05) improved various yield components in all five rice varieties relative to the current transplanting system.
- Taxon
- riceOryza sativat0
- Treatment
- SRI practicese0
- Outcome
- various yield componentse0
- Direction
- improvede0
- Comparator
- current transplanting system (CTS)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“SRI practices significantly (p < 0.05) improved the harvest index, percentage of effective tillers, panicle length, and various yield components in all the varieties”
e1“compared with the current transplanting system (CTS)”
Claim · model-written summary
SRI hills with an open-canopy structure had a higher leaf area index than conventional transplanting.
- Taxon
- riceOryza sativat0
- Treatment
- SRI hillse0
- Outcome
- leaf area indexe0
- Direction
- highere0
- Comparator
- conventional transplanting methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“SRI hills having an open-canopy structure with higher leaf area index (LAI) resulted in greater light interception than the conventional transplanting methods”
Claim · model-written summary
SRI hills with an open canopy and higher LAI resulted in greater light interception than conventional transplanting.
- Taxon
- riceOryza sativat0
- Treatment
- SRI hillse0
- Outcome
- light interceptione0
- Direction
- greatere0
- Comparator
- conventional transplanting methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“SRI hills having an open-canopy structure with higher leaf area index (LAI) resulted in greater light interception than the conventional transplanting methods”
Claim · model-written summary
At the ripening stage, SRI plants had better root growth than CTS plants.
- Taxon
- riceOryza sativat0
- Organ / stage
- ripening stagee0
- Treatment
- SRI plantse0
- Outcome
- root growthe0
- Direction
- bettere0
- Comparator
- CTS plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“At the ripening stage, SRI plants had better root growth and a higher xylem exudation rate than CTS plants”
Claim · model-written summary
At the ripening stage, SRI plants had a higher xylem exudation rate than CTS plants.
- Taxon
- riceOryza sativat0
- Organ / stage
- ripening stagee0
- Treatment
- SRI plantse0
- Outcome
- xylem exudation ratee0
- Direction
- highere0
- Comparator
- CTS plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“At the ripening stage, SRI plants had better root growth and a higher xylem exudation rate than CTS plants”
Claim · model-written summary
In SRI plants, higher chlorophyll levels in the lower leaves and a higher photosynthesis rate were associated with better root growth and xylem exudation.
- Taxon
- riceOryza sativat0
- Organ / stage
- lower leavese0
- Treatment
- SRI plantse1
- Outcome
- chlorophyll in the lower leaves and a higher photosynthesis ratee0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“higher levels of chlorophyll in the lower leaves and a higher photosynthesis rate”
e1“At the ripening stage, SRI plants had better root growth and a higher xylem exudation rate than CTS plants”
Claim · model-written summary
Delayed senescence with enhanced photosynthesis in the lower leaves was responsible for supplying more assimilates to the roots, maintaining their higher activity.
- Taxon
- riceOryza sativat0
- Organ / stage
- rootse0
- Outcome
- higher activitye0
- Qualifier
- Delayed senescence with enhanced photosynthesis in the lower leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“Delayed senescence with enhanced photosynthesis in the lower leaves was also responsible for supplying more assimilates toward the roots for maintaining their higher activity”
Claim · model-written summary
All rice varieties had 12-42% higher grain yield under SRI than under the current transplanting system.
- Taxon
- riceOryza sativat0
- Treatment
- this alternative managemente0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 12–42%e0
- Comparator
- current transplanting system (CTS)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“all the varieties performed better in terms of grain yield (12–42% higher) with this alternative management”
e1“compared with the current transplanting system (CTS)”
Claim · model-written summary
The SRI features might also contribute to improved grain filling and grain weight in SRI-grown plants.
- Taxon
- riceOryza sativat0
- Treatment
- SRI-grown plantse0
- Outcome
- grain filling and grain weighte0
- Qualifier
- might also contributee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice varieties”
e0“These features might also contribute to the improvement of grain filling and grain weight in SRI-grown plants”
The same questions in other papers
irrigation · growth · Oryza sativa (rice)Positive and negative results
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- no effect
- positive
- negative
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See all 291 papers →irrigation · yield · Oryza sativa (rice)Positive and negative results
905 papers in the same direction as this paper · 201 in the opposite direction · 64 reporting no difference from an alternative
- positive
- positive
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1,167 papers more in this group
See all 1,171 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.