Abstract
We investigated the effects of different irrigation methods(drip and flood) and N application dose on cotton plant biomass,fertilizer N accumulation,lint yield of cotton,and nitrogen use efficiency,in a two-year field experiment.We found that drip irrigation significantly increased cotton plant biomass,N uptake,lint yield of cotton,and N use efficiency(NUE) in comparison with flood irrigation.Biomass and N accumulation in all plant parts under drip irrigation were significantly greater than under flood irrigation,except for the roots.This suggested that the improved water regime of drip irrigation reduced cotton root growth while it improved shoot growth.N fertilizer application significantly increased cotton plant biomass and nitrogen absorption.Multiple comparisons between different N dosages showed that the highest lint yield was at 360 kg·hm-2,followed by 480,240 and 0 kg·hm-2,showing that excess N input did not contribute to higher lint production.Increased N fertilizer application resulted in lower N use efficiency,N agronomic efficiency,and N partial factor productivity.Significant interaction was observed between irrigation methods and nitrogen on boll number per plant and lint yield of cotton.
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Claims 15
Claim · model-written summary
Drip irrigation increased cotton biomass relative to flood irrigation.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- drip irrigatione0
- Outcome
- cotton plant biomasse0
- Direction
- increasede0
- Comparator
- flood irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation significantly increased cotton plant biomass,N uptake,lint yield of cotton,and N use efficiency(NUE) in comparison with flood irrigation”
Claim · model-written summary
Drip irrigation increased cotton nitrogen uptake relative to flood irrigation.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- drip irrigatione0
- Outcome
- N uptakee0
- Direction
- increasede0
- Comparator
- flood irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation significantly increased cotton plant biomass,N uptake,lint yield of cotton,and N use efficiency(NUE) in comparison with flood irrigation”
Claim · model-written summary
Drip irrigation increased cotton lint yield relative to flood irrigation.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- drip irrigatione0
- Outcome
- lint yield of cottone0
- Direction
- increasede0
- Comparator
- flood irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation significantly increased cotton plant biomass,N uptake,lint yield of cotton,and N use efficiency(NUE) in comparison with flood irrigation”
Claim · model-written summary
Drip irrigation increased cotton nitrogen use efficiency relative to flood irrigation.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- drip irrigatione0
- Outcome
- N use efficiency(NUE)e0
- Direction
- increasede0
- Comparator
- flood irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drip irrigation significantly increased cotton plant biomass,N uptake,lint yield of cotton,and N use efficiency(NUE) in comparison with flood irrigation”
Claim · model-written summary
Biomass and nitrogen accumulation in cotton plant parts other than roots were greater under drip than flood irrigation.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- drip irrigatione0
- Outcome
- Biomass and N accumulatione0
- Direction
- greatere0
- Qualifier
- except for the rootse0
- Comparator
- flood irrigatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biomass and N accumulation in all plant parts under drip irrigation were significantly greater than under flood irrigation,except for the roots”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
The authors inferred that drip irrigation reduced cotton root growth.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- drip irrigatione0
- Outcome
- cotton root growthe0
- Direction
- reducede0
- Qualifier
- improved water regimee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved water regime of drip irrigation reduced cotton root growth”
Claim · model-written summary
The authors inferred that drip irrigation improved cotton shoot growth.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- drip irrigatione0
- Outcome
- shoot growthe0
- Direction
- improvede0
- Qualifier
- improved water regimee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“improved water regime of drip irrigation reduced cotton root growth while it improved shoot growth”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
Nitrogen fertilizer application increased cotton biomass.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- N fertilizer applicatione0
- Outcome
- cotton plant biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer application significantly increased cotton plant biomass and nitrogen absorption”
Claim · model-written summary
Nitrogen fertilizer application increased cotton nitrogen absorption.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- N fertilizer applicatione0
- Outcome
- nitrogen absorptione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer application significantly increased cotton plant biomass and nitrogen absorption”
Claim · model-written summary
Cotton lint yield was highest at 360 kg·hm-2, followed by 480, 240 and 0 kg·hm-2.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- 360 kg·hm-2e0
- Outcome
- lint yielde0
- Direction
- higheste0
- Value
- 360 kg·hm-2e0
- Qualifier
- followed by 480,240 and 0 kg·hm-2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest lint yield was at 360 kg·hm-2,followed by 480,240 and 0 kg·hm-2”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
Increasing nitrogen fertilizer lowered cotton nitrogen use efficiency.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Increased N fertilizer applicatione0
- Outcome
- N use efficiencye0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased N fertilizer application resulted in lower N use efficiency,N agronomic efficiency,and N partial factor productivity”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
Increasing nitrogen fertilizer lowered cotton nitrogen agronomic efficiency.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Increased N fertilizer applicatione0
- Outcome
- N agronomic efficiencye0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased N fertilizer application resulted in lower N use efficiency,N agronomic efficiency,and N partial factor productivity”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
Increasing nitrogen fertilizer lowered cotton nitrogen partial factor productivity.
- Taxon
- cottonGossypium hirsutume1
- Treatment
- Increased N fertilizer applicatione0
- Outcome
- N partial factor productivitye0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increased N fertilizer application resulted in lower N use efficiency,N agronomic efficiency,and N partial factor productivity”
e1“cotton plant biomass,fertilizer N accumulation”
Claim · model-written summary
Irrigation method and nitrogen application interacted significantly for cotton boll number per plant.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- irrigation methods and nitrogene0
- Outcome
- boll number per plante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant interaction was observed between irrigation methods and nitrogen on boll number per plant and lint yield of cotton”
Claim · model-written summary
Irrigation method and nitrogen application interacted significantly for cotton lint yield.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- irrigation methods and nitrogene0
- Outcome
- lint yield of cottone0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant interaction was observed between irrigation methods and nitrogen on boll number per plant and lint yield of cotton”
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