Abstract
A field experiment was conducted during rainy (kharif) season of 2018 and 2019 at the research farm of Tamil Nadu Rice Research Institute, Aduthurai, Tamil Nadu to evaluate the impact of drip irrigation on rice (Oryza sativa L.) growth, productivity and water use efficiency. The experiments were laid out in a strip plot design with 4 varieties/hybrids in the horizontal strip and 6 irrigation regimes in the vertical strip with 3 replications. The findings reveal that drip irrigation at 125% Pan Evaporation (PE) resulted in superior growth, yield parameters and grain yield. KRH 2 with 125% PE recorded the maximum grain yield (4200 kg/ha), followed by ADT 45 (4140 kg/ha) with 125% PE. All yield attributes, except ill-filled grains/panicle, increased with increasing irrigation level from 50 to 125% PE. Rice yield attributes, viz. tillers/m2 (r=0.86), panicles/m2 (r=0.90) and grains/panicle (r=0.84) showed positive correlation with grain yield. Irrespective of the variety and irrigation levels the row closer to the drip line recorded higher grain yield at all the irrigation levels compared to rows farthest. Among the irrigation regime the highest total water use (671 mm) was recorded in 125% PE while the highest water use efficiency (6.5 kg/ha-mm) was recorded in 75% PE up to tillering stage, 100% PE during flowering phase and 75% PEduring maturity phase. Among the variety, ADT 45 recorded the highest water use efficiency (7.15 kg/ha mm). The study recommends KRH 2 hybrid and ADT 45 variety for drip irrigation with 125% PE in areas with limited water availability, especially in well-irrigated areas.
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Claims 13
Claim · model-written summary
Drip irrigation at 125% PE gave superior rice growth and yield parameters.
- Taxon
- rice
Oryza sativat0 - Treatment
- drip irrigation at 125% Pan Evaporation (PE)e0
- Outcome
- growth, yield parameters and grain yielde0
- Direction
- superiore0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation at 125% Pan Evaporation (PE) resulted in superior growth, yield parameters and grain yield”
t0“rice (Oryza sativa)”
Claim · model-written summary
KRH 2 at 125% PE produced the maximum grain yield, 4200 kg/ha.
- Taxon
- riceOryza sativat0
- Material
- KRH 2e0
- Treatment
- 125% PEe0
- Outcome
- grain yielde0
- Direction
- maximume0
- Value
- 4200 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“KRH 2 with 125% PE recorded the maximum grain yield (4200 kg/ha)”
t0“rice (Oryza sativa)”
Claim · model-written summary
ADT 45 at 125% PE yielded 4140 kg/ha, second to KRH 2.
- Taxon
- riceOryza sativat0
- Material
- ADT 45e0
- Treatment
- 125% PEe0
- Outcome
- ADT 45e0
- Direction
- followed bye0
- Value
- 4140 kg/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“followed by ADT 45 (4140 kg/ha) with 125% PE”
t0“rice (Oryza sativa)”
Claim · model-written summary
Yield attributes other than ill-filled grains per panicle rose as irrigation increased from 50 to 125% PE.
- Taxon
- riceOryza sativat0
- Treatment
- irrigation level from 50 to 125% PEe0
- Outcome
- yield attributese0
- Direction
- increasede0
- Qualifier
- except ill-filled grains/paniclee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All yield attributes, except ill-filled grains/panicle, increased with increasing irrigation level from 50 to 125% PE”
t0“rice (Oryza sativa)”
Claim · model-written summary
Tillers per square metre correlated positively with grain yield (r=0.86).
- Taxon
- riceOryza sativat0
- Organ / stage
- tillers/m2e0
- Outcome
- grain yielde0
- Direction
- positivee0
- Value
- r=0.86e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillers/m2 (r=0.86), panicles/m2 (r=0.90) and grains/panicle (r=0.84) showed positive correlation with grain yield”
t0“rice (Oryza sativa)”
Claim · model-written summary
Panicles per square metre correlated positively with grain yield (r=0.90).
- Taxon
- riceOryza sativat0
- Organ / stage
- panicles/m2e0
- Outcome
- grain yielde0
- Direction
- positivee0
- Value
- r=0.90e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillers/m2 (r=0.86), panicles/m2 (r=0.90) and grains/panicle (r=0.84) showed positive correlation with grain yield”
t0“rice (Oryza sativa)”
Claim · model-written summary
Grains per panicle correlated positively with grain yield (r=0.84).
- Taxon
- riceOryza sativat0
- Organ / stage
- grains/paniclee0
- Outcome
- grain yielde0
- Direction
- positivee0
- Value
- r=0.84e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tillers/m2 (r=0.86), panicles/m2 (r=0.90) and grains/panicle (r=0.84) showed positive correlation with grain yield”
t0“rice (Oryza sativa)”
Claim · model-written summary
Rows near the drip line yielded more grain than the farthest rows.
- Taxon
- riceOryza sativat0
- Outcome
- grain yielde0
- Direction
- highere0
- Comparator
- rows fartheste0
- Setting
- the row closer to the drip linee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the row closer to the drip line recorded higher grain yield at all the irrigation levels compared to rows farthest”
t0“rice (Oryza sativa)”
Claim · model-written summary
The 125% PE regime had the highest total water use, 671 mm.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest total water use (671 mm) was recorded in 125% PE”
t0“rice (Oryza sativa)”
Claim · model-written summary
The phased 75%, 100%, 75% PE regime had the highest water use efficiency, 6.5 kg/ha-mm.
- Taxon
- riceOryza sativat0
- Treatment
- 75% PE up to tillering stage, 100% PE during flowering phase and 75% PEduring maturity phasee0
- Outcome
- water use efficiencye0
- Direction
- higheste0
- Value
- 6.5 kg/ha-mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest water use efficiency (6.5 kg/ha-mm) was recorded in 75% PE up to tillering stage, 100% PE during flowering phase and 75% PEduring maturity phase”
t0“rice (Oryza sativa)”
Claim · model-written summary
ADT 45 had the highest varietal water use efficiency, 7.15 kg/ha mm.
- Taxon
- riceOryza sativat0
- Material
- ADT 45e0
- Outcome
- water use efficiencye0
- Direction
- higheste0
- Value
- 7.15 kg/ha mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ADT 45 recorded the highest water use efficiency (7.15 kg/ha mm)”
t0“rice (Oryza sativa)”
Claim · model-written summary
The authors recommend KRH 2 with 125% PE drip irrigation.
- Taxon
- riceOryza sativat0
- Material
- KRH 2e0
- Outcome
- drip irrigation with 125% PEe0
- Qualifier
- areas with limited water availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study recommends KRH 2 hybrid and ADT 45 variety for drip irrigation with 125% PE in areas with limited water availability”
t0“rice (Oryza sativa)”
Claim · model-written summary
The authors recommend ADT 45 with 125% PE drip irrigation.
- Taxon
- riceOryza sativat0
- Material
- ADT 45e0
- Outcome
- drip irrigation with 125% PEe0
- Qualifier
- areas with limited water availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The study recommends KRH 2 hybrid and ADT 45 variety for drip irrigation with 125% PE in areas with limited water availability”
t0“rice (Oryza sativa)”
The same questions in other papers
irrigation · yield · Oryza sativa (rice)Positive and negative results
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