Abstract
SUMMARY Studies in 1963–65 of the phytotoxic effects, on leaves, flowers and yields of blackcurrants, of sprays containing sulphur, particularly lime sulphur, showed that there was considerable variation in degree of effect between years and between experiments in the same year. It was difficult to damage flowers except at low temperatures, but if fruit set was affected then yield was depressed. Leaf scorching has to be very severe before yields are depressed. There was no evidence from preliminary experiments that sprays of seaweed extract reduced sulphur shock if used up to 3 days before lime sulphur application. The growth rate of shoots was reduced by 1/4–4% lime sulphur for short periods, dependent on concentration, but total bud numbers, flower/ vegetative bud ratios and yield were unaffected. It was found that no adverse effects of lime sulphur were carried over into the following year.
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Claims 10
Claim · model-written summary
Sulphur spray phytotoxicity varied between years and experiments.
Verbatim
e0“there was considerable variation in degree of effect between years and between experiments in the same year.”
t0“blackcurrants”
Claim · model-written summary
Flower damage from sulphur sprays was difficult except at low temperatures.
Verbatim
e0“It was difficult to damage flowers except at low temperatures”
t0“blackcurrants”
Claim · model-written summary
When fruit set was affected, blackcurrant yield fell.
Verbatim
e0“if fruit set was affected then yield was depressed.”
t0“blackcurrants”
Claim · model-written summary
Leaf scorching depressed yields only when very severe.
Verbatim
e0“Leaf scorching has to be very severe before yields are depressed.”
t0“blackcurrants”
Claim · model-written summary
Preapplication seaweed extract showed no evidence of reducing sulphur shock.
- Taxon
- blackcurrantst0
- Treatment
- sprays of seaweed extracte0
- Outcome
- sulphur shocke0
- Qualifier
- up to 3 days before lime sulphur applicatione0
Not reportedComparatorDirection
Verbatim
e0“There was no evidence from preliminary experiments that sprays of seaweed extract reduced sulphur shock if used up to 3 days before lime sulphur application.”
t0“blackcurrants”
Claim · model-written summary
Lime sulphur briefly reduced shoot growth rate depending on concentration.
- Taxon
- blackcurrantst0
- Organ / stage
- shootse0
- Treatment
- 1/4–4% lime sulphure0
- Outcome
- growth rate of shootse0
- Direction
- reducede0
- Qualifier
- for short periods, dependent on concentratione0
Not reportedComparator
Verbatim
e0“The growth rate of shoots was reduced by 1/4–4% lime sulphur for short periods, dependent on concentration”
t0“blackcurrants”
Claim · model-written summary
Lime sulphur left total bud numbers unaffected.
Not reportedComparator
Verbatim
e0“but total bud numbers, flower/ vegetative bud ratios and yield were unaffected.”
t0“blackcurrants”
e1“The growth rate of shoots was reduced by 1/4–4% lime sulphur”
Claim · model-written summary
Lime sulphur left flower to vegetative bud ratios unaffected.
- Taxon
- blackcurrantst0
- Treatment
- lime sulphure1
- Outcome
- flower/ vegetative bud ratiose0
- Direction
- unaffectede0
Not reportedComparator
Verbatim
e0“but total bud numbers, flower/ vegetative bud ratios and yield were unaffected.”
t0“blackcurrants”
e1“The growth rate of shoots was reduced by 1/4–4% lime sulphur”
Claim · model-written summary
Lime sulphur left yield unaffected.
Not reportedComparator
Verbatim
e0“but total bud numbers, flower/ vegetative bud ratios and yield were unaffected.”
t0“blackcurrants”
e1“The growth rate of shoots was reduced by 1/4–4% lime sulphur”
Claim · model-written summary
Lime sulphur had no adverse carryover effects the next year.
Verbatim
e0“no adverse effects of lime sulphur were carried over into the following year.”
t0“blackcurrants”