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Phytotoxicity to blackcurrants of sprays containing sulphur
Author(s) -
SMITH B. D.,
CLARKE G. M.
Publication year - 1967
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1967.tb04421.x
Subject(s) - lime , biology , sulfur , phytotoxicity , horticulture , yield (engineering) , shoot , botany , agronomy , chemistry , paleontology , materials science , organic chemistry , metallurgy
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.