Abstract
A field experiment was conducted at the central research farm of Bangladesh Agricultural Research Institute, Gazipur for two consecutive years to verify the yield response of wheat variety Prodip to different doses and split applications of N fertilizer to determine appropriate N dose and application method for increasing NUE and grain yield of wheat. The treatments comprised of 12 combinations of three doses of nitrogen (80, 100, and 120 kg/ha) from urea, which were assigned in the main plots and four methods of N splitting viz., application of all N as basal; 2/3rd basal plus 1/3rd as top dress at crown root initiation (CR1) stage; 1/2 basal plus 1/2 as top dress at CR1 stage; and 1/3rd basal with 1/3rd as top dress at CR1 plus 1/3rd as top dress at 1st node stage which were tested in the sub plots. Higher yield was achieved from N rate of 120 kgiha applied as three equal splits of one-third as basal during final land preparation, one-third as top dressing during CR1 and the rest one-third top dressing at first node stage. The yield advantage of wheat due to N treatments was attributed to higher thousand grain weight and spikes/m2. Nitrogen content in wheat grain and straw was not affected significantly by different N treatment and their combinations, whereas plant N uptake was significantly influenced by N rate and N splitting and also due to the interaction of N rate and N splitting. Total N uptake was maximum under N rate of 120 kg/ha applied as three equal splits as 1/3rd basal with 1/3rd as top dress at CR1 plus 1/3rd as top dress at 1st node stage. Split applications of sub-optimal dose of N (80 kg/ha) resulted in negative gain in apparent NUE, but split applications, especially three split applications (1/3rd basal, 1/3rd at CR1, and 1/3rd at 1st node stage) of higher dose of N (100 and 120 kg/ha) resulted in positive gain in apparent NUE. Keywords: Wheat grain yield; nitrogen management; N uptake and NUE DOI: http://dx.doi.org/10.3329/bjar.v36i2.9249 BJAR 2011; 36(2): 231-240
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Claims 10
Claim · model-written summary
The highest wheat yield came from 120 kgiha nitrogen in three equal splits.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- N rate of 120 kgiha applied as three equal splitse0
- Outcome
- yielde0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher yield was achieved from N rate of 120 kgiha applied as three equal splits of one-third as basal during final land preparation, one-third as top dressing during CR1 and the rest one-third top dressing at first node stage.”
t0“Wheat”
Claim · model-written summary
Higher thousand grain weight contributed to the wheat yield advantage under nitrogen treatments.
- Taxon
- wheatTriticum aestivume0
- Treatment
- N treatmentse0
- Outcome
- thousand grain weighte0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield advantage of wheat due to N treatments was attributed to higher thousand grain weight and spikes/m2.”
Claim · model-written summary
Higher spikes per square metre contributed to the wheat yield advantage under nitrogen treatments.
- Taxon
- wheatTriticum aestivume0
- Treatment
- N treatmentse0
- Outcome
- spikes/m2e0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield advantage of wheat due to N treatments was attributed to higher thousand grain weight and spikes/m2.”
Claim · model-written summary
Wheat grain nitrogen content did not significantly change across nitrogen treatments.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- graine0
- Treatment
- different N treatment and their combinationse0
- Outcome
- Nitrogen content in wheat graine0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen content in wheat grain and straw was not affected significantly by different N treatment and their combinations”
Claim · model-written summary
Wheat straw nitrogen content did not significantly change across nitrogen treatments.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- strawe0
- Treatment
- different N treatment and their combinationse0
- Outcome
- Nitrogen content in wheat grain and strawe0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen content in wheat grain and straw was not affected significantly by different N treatment and their combinations”
Claim · model-written summary
Plant nitrogen uptake was significantly affected by nitrogen rate, splitting and their interaction.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- N rate and N splittinge0
- Outcome
- plant N uptakee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant N uptake was significantly influenced by N rate and N splitting and also due to the interaction of N rate and N splitting”
t0“Wheat”
Claim · model-written summary
Total nitrogen uptake was greatest at 120 kg/ha nitrogen in three equal splits.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- N rate of 120 kg/ha applied as three equal splitse0
- Outcome
- Total N uptakee0
- Direction
- maximume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total N uptake was maximum under N rate of 120 kg/ha applied as three equal splits as 1/3rd basal with 1/3rd as top dress at CR1 plus 1/3rd as top dress at 1st node stage.”
t0“Wheat”
Claim · model-written summary
Splitting 80 kg/ha nitrogen produced a negative gain in apparent NUE.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Split applications of sub-optimal dose of N (80 kg/ha)e0
- Outcome
- apparent NUEe0
- Direction
- negative gaine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split applications of sub-optimal dose of N (80 kg/ha) resulted in negative gain in apparent NUE”
t0“Wheat”
Claim · model-written summary
Splitting 100 kg/ha nitrogen produced a positive gain in apparent NUE.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 100e0
- Outcome
- apparent NUEe0
- Direction
- positive gaine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications, especially three split applications (1/3rd basal, 1/3rd at CR1, and 1/3rd at 1st node stage) of higher dose of N (100 and 120 kg/ha) resulted in positive gain in apparent NUE”
t0“Wheat”
Claim · model-written summary
Splitting 120 kg/ha nitrogen produced a positive gain in apparent NUE.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- 120 kg/hae0
- Outcome
- apparent NUEe0
- Direction
- positive gaine0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split applications, especially three split applications (1/3rd basal, 1/3rd at CR1, and 1/3rd at 1st node stage) of higher dose of N (100 and 120 kg/ha) resulted in positive gain in apparent NUE”
t0“Wheat”
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nitrogen · nutrient: content · Triticum aestivum (wheat)Positive and negative results
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- positive
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See all 479 papers →nitrogen · yield · Triticum aestivum (wheat)Positive and negative results
1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative
- no effect
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See all 2,061 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.