Abstract
SUMMARY Four field experiments were conducted over the 1992 and 1993 seasons (southwest monsoon seasons, June–October) in the warm subhumid tropical region on the west coast of the Maharashtra State, India. The objective was to investigate the effect of recycling limited amounts of rice straw (RS) (as a source of K and Si) integrated with the use of prilled urea (PU) and urea briquettes (UB) at 60 kg N/ha on the growth and yield of rainfed transplanted rice ( Oryza sativa L.). The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing. The additional yields were attributed to the increase of total and productive tillers/m 2 and panicle weight. The results indicate the potential of the integrated RS–UB management for increasing yields of rainfed transplanted rice in the warm subhumid tropical zone.
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Claims 4
Claim · model-written summary
Integrated straw and briquette placement increased grain yield by 1·3 t/ha relative to straw and split prilled urea.
- Taxon
- rice
Oryza sativat0 - Treatment
- basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills)e0
- Outcome
- grain yielde0
- Direction
- highere0
- Value
- 1·3 t/hae0
- Comparator
- RS practice integrated with two equal split applications of PUe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing”
e1“The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing”
t0“transplanted rice”
Claim · model-written summary
Integrated straw and briquette placement increased straw yield by 1·1 t/ha.
- Taxon
- riceOryza sativat0
- Treatment
- basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills)e0
- Outcome
- straw yielde0
- Direction
- highere0
- Value
- 1·1 t/hae0
- Comparator
- RS practice integrated with two equal split applications of PUe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing”
e1“The management practice, consisting of basal incorporation of RS (2 t/ha) integrated with deep placement of UB (one 2·1-g UB/4 hills) immediately after transplanting using a modified 20 × 20 cm spacing, produced a significantly higher grain yield (average increase of 1·3 t/ha) and straw yield (average increase of 1·1 t/ha) than did the RS practice integrated with two equal split applications of PU at the same N rate and hill spacing”
t0“transplanted rice”
Claim · model-written summary
Additional yields were attributed to more total and productive tillers and heavier panicles.
- Taxon
- riceOryza sativat0
- Outcome
- additional yieldse0
- Qualifier
- increase of total and productive tillers/m 2 and panicle weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The additional yields were attributed to the increase of total and productive tillers/m 2 and panicle weight”
e1“The additional yields were attributed to the increase of total and productive tillers/m 2 and panicle weight”
t0“transplanted rice”
Claim · model-written summary
Authors see yield improvement potential for integrated RS–UB management in rainfed transplanted rice.
- Taxon
- riceOryza sativae0
- Outcome
- integrated RS–UB management for increasing yieldse0
- Setting
- warm subhumid tropical zonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicate the potential of the integrated RS–UB management for increasing yields of rainfed transplanted rice in the warm subhumid tropical zone”
e1“The results indicate the potential of the integrated RS–UB management for increasing yields of rainfed transplanted rice in the warm subhumid tropical zone”
The same questions in other papers
nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
- negative
- positive
- positive
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