Abstract
The unnecessary inputs costs to farmers due to N losses can be optimized by developing a sound fertilizer strategy. The optimization for improved wheat productivity, N re-translocation, utilization and use efficiencies can be achieved through source and timing of N application. Thus, an experiment was carried out at the Research Farm of KPK Agricultural University Peshawar during 2005-06 to test the effects of sources and timing of N application on wheat biological yield and N indices. Nitrogen sources were ammonium (NH4-N) and nitrate (NO3-N) applied @ 100 kg ha -1 at three different stages i.e., at sowing (S1), tillering (S2) and boot stage (S3). Ammonium-N increased wheat biological yield and total N uptake whereas nitrogen utilization efficiency was increased with NO3-N. Split N at sowing, tillering and boot stages had increased the biological yield and apparent N re-translocation, whereas total-N uptake and N harvest index was higher for full application of N at boot stage. Nitrogen application had almost double the N uptake compared to control and increased 27% N retranslocation regardless of sources and application time. It was concluded from the experiment that split application of N had higher wheat productivity and re-translocation, whereas full and delayed N dose increased N harvest index compared to other treatments. Thus, split N application is recommended for improved biological yield, whereas for improved quality of grains the delayed application of N at boot stage is preferable in agro-climatic conditions of Peshawar.
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Claims 9
Claim · model-written summary
Ammonium-N increased wheat biological yield.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- Ammonium-Ne0
- Outcome
- biological yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium-N increased wheat biological yield”
Claim · model-written summary
Ammonium-N increased total nitrogen uptake.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Ammonium-Ne0
- Outcome
- total N uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonium-N increased wheat biological yield and total N uptake”
Claim · model-written summary
Nitrate-N increased nitrogen utilization efficiency.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- NO3-Ne0
- Outcome
- nitrogen utilization efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen utilization efficiency was increased with NO3-N”
t0“Wheat”
Claim · model-written summary
Split nitrogen application increased biological yield and apparent nitrogen re-translocation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Split N at sowing, tillering and boot stagese0
- Outcome
- biological yield and apparent N re-translocatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split N at sowing, tillering and boot stages had increased the biological yield and apparent N re-translocation”
t0“Wheat”
Claim · model-written summary
Full nitrogen application at boot stage yielded higher total nitrogen uptake and nitrogen harvest index.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- full application of N at boot stagee0
- Outcome
- total-N uptake and N harvest indexe0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“total-N uptake and N harvest index was higher for full application of N at boot stage”
t0“Wheat”
Claim · model-written summary
Nitrogen application nearly doubled nitrogen uptake relative to control.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nitrogen applicatione0
- Outcome
- N uptakee0
- Direction
- almost doublee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen application had almost double the N uptake compared to control”
t0“Wheat”
Claim · model-written summary
Nitrogen application increased nitrogen retranslocation by 27% regardless of source and timing.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Nitrogen applicatione1
- Outcome
- N retranslocatione0
- Direction
- increasede0
- Value
- 27%e0
- Qualifier
- regardless of sources and application timee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased 27% N retranslocation regardless of sources and application time”
t0“Wheat”
e1“Nitrogen application had almost double the N uptake compared to control”
Claim · model-written summary
Split nitrogen application is recommended for improved biological yield.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- split N application is recommended for improved biological yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“split N application is recommended for improved biological yield”
t0“Wheat”
Claim · model-written summary
Delayed nitrogen application at boot stage is preferred for grain quality in Peshawar.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- delayed application of N at boot stage is preferablee0
- Setting
- Peshaware0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for improved quality of grains the delayed application of N at boot stage is preferable in agro-climatic conditions of Peshawar”
t0“Wheat”
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1,736 papers in the same direction as this paper · 285 in the opposite direction · 39 reporting no difference from an alternative
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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.