Abstract
Two field experiments were conducted at Tadong in Sikkim in the humid mid-hill acidic soils during rainy ( kharif) season of 2004, 2005 and 2006 to optimize the rate, source and schedule of nitrogen management for increasing the yield and nitrogen-use efficiency of transplanted rice ( Or yza sativa L.) under 9 schedules, 4 rates (0, 80, 120 and 160), 3 nitrogen sources (urea, farm yard manure and neem cake-coated urea) in comparison with farmers practices. N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI) recorded the highest yield (5.44 t/ha), recovery efficiency (82%) and agronomic efficiency (47.9 kg grain / kg N applied). The grain yield increased with increase in the N rate from 80 to 160 kg/ha. Conjunc- tive application of FYM and urea increased the N uptake by 11.1 to 26.2%, recovery efficiency (11.1 to 46.7%) and agronomic efficiency (5.4 to 14.8 %). Basal application of FYM @ 2.5 t/ha and top-dressing 80 kg N/ha through urea as N at 10 DAT + N at MT+ at PI stage recorded the highest recovery efficiency (66.3%) and agro- nomic efficiency (38.7 kg grain / kg N applied). At 120 kg N/ha neem cake increased the recovery efficiency by 12.1 and 37.6% and agronomic efficiency by 9.9 and 15.8% over N with and without FYM. Farmers practice of 120 application of FYM basal @ 5 t/ha and FYM @ 2.5 t/ha along with top-dressing of DAP @ 40 kg/ha at PI gave low yield and N-use efficiency.
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Claims 12
Claim · model-written summary
The specified 80 kg/ha nitrogen schedule gave the highest rice yield of 5.44 t/ha.
- Taxon
- rice
Oryza sativat0 - Treatment
- N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI)e0
- Outcome
- yielde0
- Direction
- higheste0
- Value
- 5.44 t/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI) recorded the highest yield (5.44 t/ha)”
Claim · model-written summary
The same schedule gave the highest recovery efficiency of 82%.
- Taxon
- riceOryza sativat0
- Treatment
- N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI)e0
- Outcome
- recovery efficiencye0
- Direction
- higheste0
- Value
- 82%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI) recorded the highest yield (5.44 t/ha), recovery efficiency (82%)”
Claim · model-written summary
The same schedule gave the highest agronomic efficiency of 47.9 kg grain / kg N applied.
- Taxon
- riceOryza sativat0
- Treatment
- N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI)e0
- Outcome
- agronomic efficiencye0
- Direction
- higheste0
- Value
- 47.9 kg grain / kg N appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“N application @ 80 kg/ha as N 10 days after transplanting (DAT) + N at maximum tillering (MT) + at panicale initiation (PI) recorded the highest yield (5.44 t/ha), recovery efficiency (82%) and agronomic efficiency (47.9 kg grain / kg N applied)”
Claim · model-written summary
Rice grain yield increased as nitrogen rate rose from 80 to 160 kg/ha.
- Taxon
- riceOryza sativat0
- Treatment
- N rate from 80 to 160 kg/hae0
- Outcome
- grain yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“The grain yield increased with increase in the N rate from 80 to 160 kg/ha”
Claim · model-written summary
Combined FYM and urea increased nitrogen uptake by 11.1 to 26.2%.
- Taxon
- riceOryza sativat0
- Treatment
- Conjunc- tive application of FYM and ureae0
- Outcome
- N uptakee0
- Direction
- increasede0
- Value
- 11.1 to 26.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Conjunc- tive application of FYM and urea increased the N uptake by 11.1 to 26.2%”
Claim · model-written summary
Combined FYM and urea increased recovery efficiency by 11.1 to 46.7%.
- Taxon
- riceOryza sativat0
- Treatment
- Conjunc- tive application of FYM and ureae0
- Outcome
- recovery efficiencye0
- Direction
- increasede0
- Value
- 11.1 to 46.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Conjunc- tive application of FYM and urea increased the N uptake by 11.1 to 26.2%, recovery efficiency (11.1 to 46.7%)”
Claim · model-written summary
Combined FYM and urea increased agronomic efficiency by 5.4 to 14.8%.
- Taxon
- riceOryza sativat0
- Treatment
- Conjunc- tive application of FYM and ureae0
- Outcome
- agronomic efficiencye0
- Direction
- increasede0
- Value
- 5.4 to 14.8 %e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Conjunc- tive application of FYM and urea increased the N uptake by 11.1 to 26.2%, recovery efficiency (11.1 to 46.7%) and agronomic efficiency (5.4 to 14.8 %)”
Claim · model-written summary
Basal FYM and staged urea gave the highest recovery efficiency of 66.3%.
- Taxon
- riceOryza sativat0
- Treatment
- Basal application of FYM @ 2.5 t/ha and top-dressing 80 kg N/ha through urea as N at 10 DAT + N at MT+ at PI stagee0
- Outcome
- recovery efficiencye0
- Direction
- higheste0
- Value
- 66.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Basal application of FYM @ 2.5 t/ha and top-dressing 80 kg N/ha through urea as N at 10 DAT + N at MT+ at PI stage recorded the highest recovery efficiency (66.3%)”
Claim · model-written summary
Basal FYM and staged urea gave the highest agronomic efficiency of 38.7 kg grain / kg N applied.
- Taxon
- riceOryza sativat0
- Treatment
- Basal application of FYM @ 2.5 t/ha and top-dressing 80 kg N/ha through urea as N at 10 DAT + N at MT+ at PI stagee0
- Outcome
- agro- nomic efficiencye0
- Direction
- higheste0
- Value
- 38.7 kg grain / kg N appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Basal application of FYM @ 2.5 t/ha and top-dressing 80 kg N/ha through urea as N at 10 DAT + N at MT+ at PI stage recorded the highest recovery efficiency (66.3%) and agro- nomic efficiency (38.7 kg grain / kg N applied)”
Claim · model-written summary
Neem cake at 120 kg N/ha increased recovery efficiency by 12.1 and 37.6% over nitrogen with and without FYM.
- Taxon
- riceOryza sativat0
- Treatment
- 120 kg N/ha neem cakee0
- Outcome
- recovery efficiencye0
- Direction
- increasede0
- Value
- 12.1 and 37.6%e0
- Comparator
- N with and without FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“At 120 kg N/ha neem cake increased the recovery efficiency by 12.1 and 37.6% and agronomic efficiency by 9.9 and 15.8% over N with and without FYM”
Claim · model-written summary
Neem cake at 120 kg N/ha increased agronomic efficiency by 9.9 and 15.8% over nitrogen with and without FYM.
- Taxon
- riceOryza sativat0
- Treatment
- 120 kg N/ha neem cakee0
- Outcome
- agronomic efficiencye0
- Direction
- increasede0
- Value
- 9.9 and 15.8%e0
- Comparator
- N with and without FYMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“At 120 kg N/ha neem cake increased the recovery efficiency by 12.1 and 37.6% and agronomic efficiency by 9.9 and 15.8% over N with and without FYM”
Claim · model-written summary
Farmers practice produced low rice yield and nitrogen use efficiency.
- Taxon
- riceOryza sativat0
- Treatment
- Farmers practice of 120 application of FYM basal @ 5 t/ha and FYM @ 2.5 t/ha along with top-dressing of DAP @ 40 kg/ha at PIe0
- Outcome
- low yield and N-use efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Farmers practice of 120 application of FYM basal @ 5 t/ha and FYM @ 2.5 t/ha along with top-dressing of DAP @ 40 kg/ha at PI gave low yield and N-use efficiency”
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See all 1,078 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.