Abstract
SUMMARY A two-year field experiment on a mollisol at Pantnagar showed that organic sources of N gave generally higher rice yields than the equivalent split dressing of prilled urea (PU). In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU. Yield increases were attributed to significant variations in panicles/m 2 , filled spikelets/panicle and nitrogen uptake by the crop. These components, and grain yield, were significantly correlated with wet soil NH + 4 -N, which was increased by organic manuring. Wheat grown after each rice crop showed significant residual effects of the different sources of N applied to rice.
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Claims 7
Claim · model-written summary
Organic N generally yielded more rice than equivalent split urea.
- Taxon
- rice
Oryza sativae0 - Treatment
- organic sources of Ne0
- Outcome
- rice yieldse0
- Direction
- highere0
- Comparator
- equivalent split dressing of prilled urea (PU)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic sources of N gave generally higher rice yields than the equivalent split dressing of prilled urea (PU)”
Claim · model-written summary
Sesbania green manuring plus urea in 1985/86 increased rice yield over split urea.
- Taxon
- riceOryza sativat0
- Treatment
- Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha)e0
- Outcome
- yieldse0
- Direction
- highere0
- Comparator
- split application of 80 kg N/ha as PUe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU”
t0“lowland rice”
Claim · model-written summary
Sesbania plus Azolla in 1986/87 increased rice yield over split urea.
- Taxon
- riceOryza sativat0
- Treatment
- Sesbania (40 kg N/ha) + Azolla (40 kg N/ha)e0
- Outcome
- yieldse0
- Direction
- highere0
- Comparator
- split application of 80 kg N/ha as PUe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1985/86, Sesbania green manuring (40 kg N/ha) and PU (40 kg N/ha) and, in 1986/87, Sesbania (40 kg N/ha) + Azolla (40 kg N/ha) gave significantly higher yields than a split application of 80 kg N/ha as PU”
t0“lowland rice”
Claim · model-written summary
Panicle count, filled spikelets and nitrogen uptake varied significantly with yield increases.
- Taxon
- riceOryza sativat0
- Treatment
- Yield increasese0
- Outcome
- panicles/m 2 , filled spikelets/panicle and nitrogen uptake by the crope0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield increases were attributed to significant variations in panicles/m 2 , filled spikelets/panicle and nitrogen uptake by the crop”
t0“lowland rice”
Claim · model-written summary
Rice yield and components were significantly correlated with wet soil ammonium nitrogen.
- Taxon
- riceOryza sativat0
- Compound
- NH + 4 -Ne0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These components, and grain yield, were significantly correlated with wet soil NH + 4 -N, which was increased by organic manuring”
t0“lowland rice”
Claim · model-written summary
Organic manuring increased wet soil ammonium nitrogen.
- Taxon
- riceOryza sativat0
- Treatment
- organic manuringe0
- Outcome
- wet soil NH + 4 -Ne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“wet soil NH + 4 -N, which was increased by organic manuring”
t0“lowland rice”
Claim · model-written summary
Wheat showed significant residual effects of nitrogen sources applied to preceding rice.
- Taxon
- Wheat
Triticum aestivume0 - Outcome
- significant residual effectse0
- Qualifier
- different sources of N applied to ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat grown after each rice crop showed significant residual effects of the different sources of N applied to rice”
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- no effect
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3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
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See all 3,455 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.