Abstract
A field experiment was conducted under rainfed conditions, on a shallow soil (Inceptisol) underlain with weathered basalt and on a deep soil (Vertisol) to evaluate three cotton cultivars [AKH 4 ( Gossypium arboreum ), LRK 516 ( G. hirsutum ) and NHH 44 (intra- hirsutum hybrid)] under four levels of N (0, 40, 80 and 120 kg ha −1 ) and to analyse the variations in productivity using the nitrogen use efficiency (NUE) parameter. The yield of AKH4 and NHH 44 was 101 and 89% higher than that of LRK 516. The yield and the response to N were higher on the Inceptisol. The enhanced yield and NUE of AKH 4 and NHH 44 were attributed to the improved efficiency of N uptake utilization. NUE declined from 21.6 at 40 kg ha −1 to 7.7 at 120 kg N ha −1 . The N uptake efficiency and N utilization efficiency were independent of each other, but complemented each other in improving NUE. The implications of variations in NUE, N uptake efficiency and N utilization efficiency and their components, N biomass production efficiency and HI, in cotton breeding and agronomy are also discussed.
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Claims 8
Claim · model-written summary
AKH4 cotton yield was 101% higher than LRK 516.
- Taxon
- cotton
Gossypium hirsutumt0 - Material
- AKH4e0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 101e0
- Comparator
- LRK 516e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of AKH4 and NHH 44 was 101 and 89% higher than that of LRK 516”
t0“cotton”
Claim · model-written summary
NHH 44 cotton yield was 89% higher than LRK 516.
- Taxon
- cottonGossypium hirsutumt0
- Material
- NHH 44e0
- Outcome
- yielde0
- Direction
- highere0
- Value
- 89%e0
- Comparator
- LRK 516e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of AKH4 and NHH 44 was 101 and 89% higher than that of LRK 516”
t0“cotton”
Claim · model-written summary
Cotton yield was higher on Inceptisol.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- yielde0
- Direction
- highere0
- Setting
- Inceptisole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield and the response to N were higher on the Inceptisol”
t0“cotton”
Claim · model-written summary
Cotton response to nitrogen was higher on Inceptisol.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- response to Ne0
- Direction
- highere0
- Setting
- Inceptisole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield and the response to N were higher on the Inceptisol”
t0“cotton”
Claim · model-written summary
Enhanced yield and NUE in AKH 4 and NHH 44 were attributed to improved N uptake utilization efficiency.
- Taxon
- cottonGossypium hirsutumt0
- Material
- AKH 4e0
- Outcome
- enhanced yield and NUEe0
- Qualifier
- improved efficiency of N uptake utilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The enhanced yield and NUE of AKH 4 and NHH 44 were attributed to the improved efficiency of N uptake utilization”
t0“cotton”
Claim · model-written summary
NUE declined from 21.6 at 40 kg ha −1 to 7.7 at 120 kg N ha −1.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- 120 kg N ha −1e0
- Outcome
- NUEe0
- Direction
- declinede0
- Value
- 7.7e0
- Qualifier
- 21.6e0
- Comparator
- 40 kg ha −1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NUE declined from 21.6 at 40 kg ha −1 to 7.7 at 120 kg N ha −1”
t0“cotton”
Claim · model-written summary
N uptake and utilization efficiencies were independent.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- N uptake efficiency and N utilization efficiency were independent of each othere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N uptake efficiency and N utilization efficiency were independent of each other”
t0“cotton”
Claim · model-written summary
N uptake and utilization efficiencies complemented each other in improving NUE.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- improving NUEe0
- Qualifier
- N uptake efficiency and N utilization efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N uptake efficiency and N utilization efficiency were independent of each other, but complemented each other in improving NUE”
t0“cotton”
The same questions in other papers
nitrogen · nutrient: efficiency · Gossypium hirsutum (cotton)Positive and negative results
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See all 36 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.