Abstract
summary An open‐air fumigation system was used to expose a winter barley crop ( Hordeum vulgare L.) to controlled concentrations of SO 2 from November 1982 to July 1983. Monitoring data from a rural site were used as a basis for simulating mean concentrations of 0.023, 0.038 and 0.058 μl 1 −1 SO 2 at a location where background concentrations were 0.01μl 1 −1 SO 2 . There was no evidence of a reduction or stimulation of crop growth over the winter period. During the spring, the crop in SO 2 fumigated plots had a higher green leaf area and dry weight than in control plots which may have resulted from a reduction in the occurrence of the fungal pathogen brown rust ( Puccinia Hordei Otth.). After car emergence a delay in senescence of leaves was observed in fumigated plots which gave the plants an extended period for assimilation during grain filling. There was no evidence that the yield of barley was reduced within the range of ambient SO 2 concentration in the UK (annual mean 0.03μ1 l −1 SO 2 ). However, at 0.058μl 1 −1 SO 2 , reductions in yield were observed. Treatment with 0.023μl 1 −1 SO 2 produced increased grain yield.
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Claims 6
Claim · model-written summary
SO2 fumigation had no observed effect on winter crop growth.
- Taxon
- winter barley
.jpg?width=60)
Hordeum vulgaret0 - Outcome
- crop growthe0
- Direction
- no evidence of a reduction or stimulatione0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“There was no evidence of a reduction or stimulation of crop growth over the winter period.”
t0“winter barley”
Claim · model-written summary
Spring fumigated plots had higher green leaf area and dry weight than controls.
- Taxon
- winter barleyHordeum vulgaret0
- Treatment
- SO 2 fumigated plotse0
- Outcome
- green leaf area and dry weighte0
- Direction
- highere0
- Comparator
- control plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the spring, the crop in SO 2 fumigated plots had a higher green leaf area and dry weight than in control plots”
t0“winter barley”
Claim · model-written summary
Fumigated plots showed delayed leaf senescence after ear emergence.
- Taxon
- winter barleyHordeum vulgaret0
- Treatment
- fumigated plotse0
- Outcome
- senescence of leavese0
- Direction
- delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After car emergence a delay in senescence of leaves was observed in fumigated plots”
t0“winter barley”
Claim · model-written summary
Barley yield was not reduced across ambient UK SO2 concentrations.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- ambient SO 2 concentratione0
- Outcome
- yield of barleye0
- Direction
- no evidence that the yield of barley was reducede0
- Setting
- UKe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no evidence that the yield of barley was reduced within the range of ambient SO 2 concentration in the UK (annual mean 0.03μ1 l −1 SO 2 )”
Claim · model-written summary
SO2 at 0.058 μl 1 −1 reduced yield.
- Taxon
- winter barleyHordeum vulgaret0
- Treatment
- 0.058μl 1 −1 SO 2e0
- Outcome
- yielde0
- Direction
- reductionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 0.058μl 1 −1 SO 2 , reductions in yield were observed”
t0“winter barley”
Claim · model-written summary
SO2 at 0.023 μl 1 −1 increased grain yield.
- Taxon
- winter barleyHordeum vulgaret0
- Treatment
- 0.023μl 1 −1 SO 2e0
- Outcome
- grain yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with 0.023μl 1 −1 SO 2 produced increased grain yield.”
t0“winter barley”
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1 paper more in this group
See all 5 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.