Abstract
The effect of controlled release of nitrogenous fertilizer on photosynthesis and yield of cotton was studied under field conditions.The results show that controlled release N treatment at 150kg/hm2 increases LAI,Fv/Fm,ΦPSⅡ and Fv/Fo in cotton leaves at peak flowering and bolling stages,which subsequently enhances the CAP and boll number per plant,and boll weight.The yield of unginned cotton and fertilizer use efficiency increase by 10.3% and 10.2%,respectively,compared with that of CK.Controlled release N treatment with less than 120kg/hm2 of N gives almost the same yield as CK,but increases fertilizer use efficiency by 29.0%,and saves labor and time when used only as base fertilizer.
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Claims 6
Claim · model-written summary
The 150kg/hm2 treatment increased LAI and three fluorescence measures.
- Taxon
- cotton
Gossypium hirsutume0 - Organ / stage
- cotton leaves at peak flowering and bolling stagese0
- Treatment
- controlled release N treatment at 150kg/hm2e0
- Outcome
- LAI,Fv/Fm,ΦPSⅡe0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“controlled release N treatment at 150kg/hm2 increases LAI,Fv/Fm,ΦPSⅡ and Fv/Fo in cotton leaves at peak flowering and bolling stages”
Claim · model-written summary
The treatment increased Fv/Fo.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- controlled release N treatment at 150kg/hm2e0
- Outcome
- Fv/Foe0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“controlled release N treatment at 150kg/hm2 increases LAI,Fv/Fm,ΦPSⅡ and Fv/Fo in cotton leaves at peak flowering and bolling stages”
Claim · model-written summary
The 150kg/hm2 treatment enhanced CAP and boll number and weight.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- controlled release N treatment at 150kg/hm2e1
- Outcome
- CAP and boll number per plant,and boll weighte0
- Direction
- enhancese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which subsequently enhances the CAP and boll number per plant,and boll weight”
t0“cotton”
t1“cotton”
e1“controlled release N treatment at 150kg/hm2 increases LAI,Fv/Fm,ΦPSⅡ and Fv/Fo in cotton leaves at peak flowering and bolling stages”
Claim · model-written summary
Fertilizer use efficiency increased 10.2% against CK.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- controlled release N treatmente1
- Outcome
- fertilizer use efficiencye0
- Direction
- increasee0
- Value
- 10.2%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of unginned cotton and fertilizer use efficiency increase by 10.3% and 10.2%,respectively,compared with that of CK.”
t0“cotton”
t1“cotton”
e1“controlled release N treatment at 150kg/hm2 increases LAI,Fv/Fm,ΦPSⅡ and Fv/Fo in cotton leaves at peak flowering and bolling stages”
Claim · model-written summary
Below 120kg/hm2, yield was almost the same as CK.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Controlled release N treatment with less than 120kg/hm2 of Ne0
- Outcome
- yielde0
- Direction
- almost the samee0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Controlled release N treatment with less than 120kg/hm2 of N gives almost the same yield as CK”
t0“cotton”
t1“cotton”
Claim · model-written summary
Below 120kg/hm2, fertilizer use efficiency increased 29.0%.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- Controlled release N treatment with less than 120kg/hm2 of Ne0
- Outcome
- fertilizer use efficiencye0
- Direction
- increasese0
- Value
- 29.0%e0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Controlled release N treatment with less than 120kg/hm2 of N gives almost the same yield as CK,but increases fertilizer use efficiency by 29.0%”
t0“cotton”
t1“cotton”
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See all 550 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.