Abstract
A field experiment was conducted during November 2009-April 2010 in Bangladesh Rice Research Institute, Bangladesh to examine the response of two rice (Oryza sativa L.) varieties (BRRIdhan28 and BRRI dhan29) to six N rates of nitrogen fertilizer viz. 0, 50, 100, 150, 200 and 250 kg ha-1. The experiment was conducted in a RCB design with three replications. Grain yields of both BRRI dhan28 and BRRI dhan29 increased significantly in a quadratic fashion with N rates. The highest grain yields were obtained from 150 kg N ha-1 in both the varieties. More than 1 t ha-1 yield was obtained in BRRI dhan29 (6.34 t ha-1) at the same rate of N indicated BRRI dhan29 as a nitrogen efficient variety. However, the predicted economic optimum doses of N appeared to be 156 and 158 kg ha-1 for BRRI dhan28 and BRRI dhan29, respectively. The grain yield was mainly influenced by the number of panicles per hill, which was found to increase with the increase of N rates in both the varieties. The Agriculturists 2016; 14(2) 48-60
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Claims 7
Claim · model-written summary
BRRI dhan28 and BRRI dhan29 grain yields increased significantly in a quadratic fashion with N rates.
- Taxon
- Oryza sativa L.
Oryza sativat0 - Material
- BRRI dhan28 and BRRI dhan29e1
- Treatment
- N ratese1
- Outcome
- Grain yieldse1
- Direction
- increasede1
- Qualifier
- significantly in a quadratic fashione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e1“Grain yields of both BRRI dhan28 and BRRI dhan29 increased significantly in a quadratic fashion with N rates”
Claim · model-written summary
The highest grain yields of both rice varieties were obtained at 150 kg N ha-1.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- 150 kg N ha-1e2
- Outcome
- grain yieldse2
- Direction
- higheste2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e2“The highest grain yields were obtained from 150 kg N ha-1 in both the varieties”
Claim · model-written summary
BRRI dhan29 yielded more than 1 t/ha (6.34 t/ha) at the same N rate.
- Taxon
- Oryza sativa L.Oryza sativat0
- Material
- BRRI dhan29e3
- Outcome
- yielde3
- Value
- 6.34 t ha-1e3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e3“More than 1 t ha-1 yield was obtained in BRRI dhan29 (6.34 t ha-1) at the same rate of N”
Claim · model-written summary
BRRI dhan29 is indicated as a nitrogen efficient variety.
- Taxon
- Oryza sativa L.Oryza sativat0
- Material
- BRRI dhan29e4
- Outcome
- nitrogen efficient varietye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e4“indicated BRRI dhan29 as a nitrogen efficient variety”
Claim · model-written summary
The predicted economic optimum N doses are 156 and 158 kg/ha for BRRI dhan28 and BRRI dhan29, respectively.
- Taxon
- Oryza sativa L.Oryza sativat0
- Material
- BRRI dhan28 and BRRI dhan29e5
- Outcome
- predicted economic optimum doses of Ne5
- Value
- 156 and 158 kg ha-1e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e5“the predicted economic optimum doses of N appeared to be 156 and 158 kg ha-1 for BRRI dhan28 and BRRI dhan29, respectively”
Claim · model-written summary
Grain yield was mainly influenced by the number of panicles per hill.
- Taxon
- Oryza sativa L.Oryza sativat0
- Outcome
- grain yielde6
- Qualifier
- mainly influenced by the number of panicles per hille6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e6“The grain yield was mainly influenced by the number of panicles per hill”
Claim · model-written summary
The number of panicles per hill increased with increasing N rates in both varieties.
- Taxon
- Oryza sativa L.Oryza sativat0
- Treatment
- N ratese7
- Outcome
- number of panicles per hille7
- Direction
- increasee7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Boro Rice Variety (Oryza sativa L.)”
e7“The grain yield was mainly influenced by the number of panicles per hill, which was found to increase with the increase of N rates in both the varieties”
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
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- positive
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