Abstract
Using hybrid rice Shanyou63, the agronomic and economic characters of different nitrogen(N) managements were evaluated. The results showed that the grain yield of the control(N omission plots) ranged from 6.8 to 7.4 t ha-1, indicating the high indigenous N supplyof the soil. Compared with farmer's fertilizer practice (FFP, 240 kg N ha-1), the modifiedFFP (70% N of FFP), real-time N management (RTNM, applying N based on values ofchlorophyll meter) and site-specific N management (SSNM, applying nitrogen based on thetiming, amount of N and values of chlorophyll meter) increased the grain yield by 9.2-10.3%, 3.3-7.0% and 8.9-9.3%, and agronomic N efficiency (the increase in grain yieldper unit N applied) by 110.5-135.6%, 204.3- 297.0% and 200.9-276.4%, respectively. Theresults suggested that RTNM and SSNM have great potential for improving N use efficiencywithout sacrificing the grain yield. In addition, RTNM and SSNM also decreased chalkygrain percentage and chalkiness to improve grain appearance quality.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
N-omission grain yield ranged from 6.8 to 7.4 t ha-1.
- Taxon
- rice
Oryza sativat0 - Material
- Shanyou63e1
- Treatment
- N omission plotse0
- Outcome
- grain yielde0
- Value
- 6.8 to 7.4 t ha-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the grain yield of the control(N omission plots) ranged from 6.8 to 7.4 t ha-1”
e1“Shanyou63”
t0“Rice”
Claim · model-written summary
Modified FFP increased grain yield by 9.2-10.3% versus FFP.
- Taxon
- RiceOryza sativat0
- Treatment
- modifiedFFP (70% N of FFP)e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 9.2-10.3%e0
- Comparator
- farmer's fertilizer practice (FFP, 240 kg N ha-1)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the modifiedFFP (70% N of FFP), real-time N management (RTNM, applying N based on values ofchlorophyll meter) and site-specific N management (SSNM, applying nitrogen based on thetiming, amount of N and values of chlorophyll meter) increased the grain yield by 9.2-10.3%, 3.3-7.0% and 8.9-9.3%”
e1“farmer's fertilizer practice (FFP, 240 kg N ha-1)”
t0“Rice”
Claim · model-written summary
RTNM increased grain yield by 3.3-7.0% versus FFP.
- Taxon
- RiceOryza sativat0
- Treatment
- real-time N management (RTNM, applying N based on values ofchlorophyll meter)e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 3.3-7.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the modifiedFFP (70% N of FFP), real-time N management (RTNM, applying N based on values ofchlorophyll meter) and site-specific N management (SSNM, applying nitrogen based on thetiming, amount of N and values of chlorophyll meter) increased the grain yield by 9.2-10.3%, 3.3-7.0% and 8.9-9.3%”
t0“Rice”
Claim · model-written summary
SSNM increased grain yield by 8.9-9.3% versus FFP.
- Taxon
- RiceOryza sativat0
- Treatment
- site-specific N management (SSNM, applying nitrogen based on thetiming, amount of N and values of chlorophyll meter)e0
- Outcome
- grain yielde0
- Direction
- increasede0
- Value
- 8.9-9.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the modifiedFFP (70% N of FFP), real-time N management (RTNM, applying N based on values ofchlorophyll meter) and site-specific N management (SSNM, applying nitrogen based on thetiming, amount of N and values of chlorophyll meter) increased the grain yield by 9.2-10.3%, 3.3-7.0% and 8.9-9.3%”
t0“Rice”
Claim · model-written summary
Modified FFP increased agronomic N efficiency by 110.5-135.6%.
- Taxon
- RiceOryza sativat0
- Treatment
- modifiedFFPe1
- Outcome
- agronomic N efficiencye0
- Value
- 110.5-135.6%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic N efficiency (the increase in grain yieldper unit N applied) by 110.5-135.6%, 204.3- 297.0% and 200.9-276.4%”
e1“modifiedFFP”
t0“Rice”
Claim · model-written summary
RTNM increased agronomic N efficiency by 204.3- 297.0%.
- Taxon
- RiceOryza sativat0
- Treatment
- RTNMe1
- Outcome
- agronomic N efficiencye0
- Value
- 204.3- 297.0%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic N efficiency (the increase in grain yieldper unit N applied) by 110.5-135.6%, 204.3- 297.0% and 200.9-276.4%”
e1“real-time N management (RTNM”
t0“Rice”
Claim · model-written summary
SSNM increased agronomic N efficiency by 200.9-276.4%.
- Taxon
- RiceOryza sativat0
- Treatment
- SSNMe1
- Outcome
- agronomic N efficiencye0
- Value
- 200.9-276.4%e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic N efficiency (the increase in grain yieldper unit N applied) by 110.5-135.6%, 204.3- 297.0% and 200.9-276.4%”
e1“site-specific N management (SSNM”
t0“Rice”
Claim · model-written summary
RTNM decreased chalky grain percentage and chalkiness.
- Taxon
- RiceOryza sativat0
- Treatment
- RTNMe0
- Outcome
- chalkygrain percentage and chalkinesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RTNM and SSNM also decreased chalkygrain percentage and chalkiness to improve grain appearance quality.”
t0“Rice”
Claim · model-written summary
SSNM decreased chalky grain percentage and chalkiness.
- Taxon
- RiceOryza sativat0
- Treatment
- SSNMe0
- Outcome
- chalkygrain percentage and chalkinesse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RTNM and SSNM also decreased chalkygrain percentage and chalkiness to improve grain appearance quality.”
t0“Rice”
The same questions in other papers
chlorophyll · yield · Oryza sativa (rice)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
3 papers more in this group
See all 7 papers →climate site · yield · Oryza sativa (rice)Positive and negative results
109 papers in the same direction as this paper · 59 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
- negative
168 papers more in this group
See all 172 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
- positive
- negative
- negative
2,041 papers more in this group
See all 2,045 papers →fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- no effect
- negative
3,451 papers more in this group
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.