Abstract
Lack of calcium and drought frequently happen together in coastal tillage wind-sand soils.Pot experiments was conducted to study the effect of soil moisture on physiological characteristics of leaves and roots of peanut at the acicula forming stage and yield of peanut under different calcium levels.The results showed that the SPAD values,net photosynthetic rates,water use efficiencies and yields are improved with the increase of calcium fertilizer levels under the conditions of(55±3)%(LW),(75±3)%(MW) and(95±3)%(HW) of field capacity,thereinto,pod yields of peanut increased by 12.2%-19.4%;Compared with the LW and HW treatments,the pod yield at MW increased by 18.7% and 56.5% respectively.These results indicate that too high or too low soil moisture at the acicula forming stage are detrimental to the photosynthesis and formation of yield,especially under the high water content condition.The yield at the maturity is significantly and positively correlated to SPAD value,photosynthetic rate,water use efficiency of leaves and root vigor at the acicula forming stage.Both water management pattern and calcium fertilization level significantly affect the yield of peanut,but there are no significant coupling effects of the two factors.Increasing application of calcium fertilizer not only help to improve yield,but also to relieve drought in some way in tillage wind-sand soils.The photosynthetic rate and yield of peanut are highest to keep about 75% of field capacity at the acicula forming stage.
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Claims 10
Claim · model-written summary
SPAD values, net photosynthetic rates and water use efficiencies of peanut improved with increasing calcium fertilizer levels under the three soil moisture levels.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- calcium fertilizer levelse0
- Outcome
- SPAD values,net photosynthetic rates,water use efficienciese0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SPAD values,net photosynthetic rates,water use efficiencies and yields are improved with the increase of calcium fertilizer levels”
t0“peanut”
Claim · model-written summary
Pod yields of peanut increased by 12.2%-19.4% with increasing calcium fertilizer levels.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- calcium fertilizer levelse0
- Outcome
- pod yieldse1
- Direction
- increasede1
- Value
- 12.2%-19.4%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase of calcium fertilizer levels”
e1“pod yields of peanut increased by 12.2%-19.4%”
Claim · model-written summary
Pod yield of peanut at medium soil moisture (MW) was 18.7% higher than at low soil moisture (LW).
- Taxon
- peanutArachis hypogaeat0
- Treatment
- MWe0
- Outcome
- pod yielde0
- Direction
- increasede0
- Value
- 18.7%e0
- Comparator
- LWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the LW and HW treatments,the pod yield at MW increased by 18.7% and 56.5% respectively”
t0“peanut”
Claim · model-written summary
Pod yield of peanut at medium soil moisture (MW) was 56.5% higher than at high soil moisture (HW).
- Taxon
- peanutArachis hypogaeat0
- Treatment
- MWe0
- Outcome
- pod yielde0
- Direction
- increasede0
- Value
- 56.5%e0
- Comparator
- HWe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with the LW and HW treatments,the pod yield at MW increased by 18.7% and 56.5% respectively”
t0“peanut”
Claim · model-written summary
Too high or too low soil moisture at the acicula forming stage is detrimental to photosynthesis and yield formation of peanut, especially under high water content.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- too high or too low soil moisturee0
- Outcome
- photosynthesis and formation of yielde0
- Direction
- detrimentale0
- Qualifier
- especially under the high water content conditione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“too high or too low soil moisture at the acicula forming stage are detrimental to the photosynthesis and formation of yield,especially under the high water content condition”
t0“peanut”
Claim · model-written summary
Peanut yield at maturity was significantly and positively correlated with SPAD value, photosynthetic rate, water use efficiency of leaves and root vigor at the acicula forming stage.
- Taxon
- peanutArachis hypogaeat0
- Organ / stage
- acicula forming stagee0
- Outcome
- yield at the maturitye0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield at the maturity is significantly and positively correlated to SPAD value,photosynthetic rate,water use efficiency of leaves and root vigor at the acicula forming stage”
t0“peanut”
Claim · model-written summary
Both water management pattern and calcium fertilization level significantly affected peanut yield.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- water management pattern and calcium fertilization levele0
- Outcome
- yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both water management pattern and calcium fertilization level significantly affect the yield of peanut”
Claim · model-written summary
There were no significant coupling effects of water management and calcium fertilization on peanut yield.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- water management pattern and calcium fertilization levele0
- Outcome
- coupling effects of the two factorse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both water management pattern and calcium fertilization level significantly affect the yield of peanut,but there are no significant coupling effects of the two factors”
Claim · model-written summary
Increasing calcium fertilizer application improves peanut yield and relieves drought to some extent in tillage wind-sand soils.
- Taxon
- peanutArachis hypogaeat0
- Outcome
- improve yielde0
- Setting
- tillage wind-sand soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing application of calcium fertilizer not only help to improve yield,but also to relieve drought in some way in tillage wind-sand soils”
t0“peanut”
Claim · model-written summary
Peanut photosynthetic rate and yield are highest when about 75% of field capacity is kept at the acicula forming stage.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- photosynthetic rate and yielde0
- Direction
- higheste0
- Value
- 75% of field capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The photosynthetic rate and yield of peanut are highest to keep about 75% of field capacity at the acicula forming stage”
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