Abstract
The experiment comprising of four tillage methods viz., puddling (PTR), conventional tillage without puddling (CT), reduced tillage (RT) and zero tillage (ZT) and four nitrogen levels at 0, 100, 125 and 150 kg ha-1 was conducted in a strip plot design with four replications at Punjab Agricultural University, Ludhiana during 2010 and 2011 to study the effect of tillage and nitrogen levels on productivity and heat utilization in mechanically transplanted rice. Results revealed that periodic plant height and dry matter accumulation by the crop recorded at 30, 60, 90 DAT and at harvest, leaf area index (LAI) and photosynthetically active radiation (PAR) interception by the crop at panicle emergence stage and the grain yield were statistically at par in mechanical transplanting in CT and PTR but significantly higherthan that in RT and ZT. Application of 150 kg N ha-1 recorded significantly higher LAI, PAR interception, number of tillers and grain yield than that in 0, 100 and 125 kg N ha-1. Mechanical transplanting in CT recorded highest accumulation of growing degree days (GDD) and highest heat use efficiency (HUE). The accumulated GDD and HUE increased significantly with each successive increase in nitrogen dose from 0 to 150 kg ha-1.
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Claims 8
Claim · model-written summary
CT and PTR were statistically at par for plant height and dry matter accumulation, LAI, PAR interception and grain yield.
- Taxon
- rice (Oryza sativa L.)
Oryza sativat0 - Treatment
- CTe0
- Outcome
- plant height and dry matter accumulatione0
- Direction
- statistically at pare0
- Comparator
- PTRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“periodic plant height and dry matter accumulation by the crop recorded at 30, 60, 90 DAT and at harvest, leaf area index (LAI) and photosynthetically active radiation (PAR) interception by the crop at panicle emergence stage and the grain yield were statistically at par in mechanical transplanting in CT and PTR”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
CT and PTR had significantly higher plant height, dry matter, LAI, PAR interception and grain yield than RT and ZT.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- CT and PTRe0
- Outcome
- grain yielde0
- Direction
- higherthane0
- Comparator
- RT and ZTe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area index (LAI) and photosynthetically active radiation (PAR) interception by the crop at panicle emergence stage and the grain yield were statistically at par in mechanical transplanting in CT and PTR but significantly higherthan that in RT and ZT.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
150 kg N ha-1 increased LAI and PAR interception relative to the lower nitrogen levels.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- 150 kg N ha-1e0
- Outcome
- LAI, PAR interceptione0
- Direction
- highere0
- Comparator
- 0, 100 and 125 kg N ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 150 kg N ha-1 recorded significantly higher LAI, PAR interception, number of tillers and grain yield than that in 0, 100 and 125 kg N ha-1.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
150 kg N ha-1 increased tiller number and grain yield relative to the lower nitrogen levels.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- 150 kg N ha-1e0
- Outcome
- number of tillers and grain yielde0
- Direction
- highere0
- Comparator
- 0, 100 and 125 kg N ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 150 kg N ha-1 recorded significantly higher LAI, PAR interception, number of tillers and grain yield than that in 0, 100 and 125 kg N ha-1.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
CT produced the highest growing degree day accumulation.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- CTe0
- Outcome
- accumulation of growing degree days (GDD)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical transplanting in CT recorded highest accumulation of growing degree days (GDD) and highest heat use efficiency (HUE).”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
CT produced the highest heat use efficiency.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- CTe0
- Outcome
- heat use efficiency (HUE)e0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mechanical transplanting in CT recorded highest accumulation of growing degree days (GDD) and highest heat use efficiency (HUE).”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
Accumulated GDD rose with each nitrogen dose increase from 0 to 150 kg ha-1.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- nitrogen dose from 0 to 150 kg ha-1e0
- Outcome
- accumulated GDDe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulated GDD and HUE increased significantly with each successive increase in nitrogen dose from 0 to 150 kg ha-1.”
t0“rice (Oryza sativa L.)”
Claim · model-written summary
HUE rose with each nitrogen dose increase from 0 to 150 kg ha-1.
- Taxon
- rice (Oryza sativa L.)Oryza sativat0
- Treatment
- nitrogen dose from 0 to 150 kg ha-1e0
- Outcome
- HUEe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulated GDD and HUE increased significantly with each successive increase in nitrogen dose from 0 to 150 kg ha-1.”
t0“rice (Oryza sativa L.)”
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