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Control of seed‐borne Sclerotinia sclerotiorum by fungicidal treatment of sunflower seed
Author(s) -
HERD G. W.,
PHILLIPS A. J. L.
Publication year - 1988
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1988.tb02065.x
Subject(s) - sclerotinia sclerotiorum , fungicide , benomyl , vinclozolin , iprodione , biology , germination , sunflower , procymidone , seed treatment , seedling , sclerotinia , sunflower seed , agronomy , damping off , horticulture , mancozeb , carbendazim
Treatment of sunflower seeds with benomyl, vinclozolin, iprodione or procymidone virtually eliminated seed‐borne Sclerotinia sclerotiorum. Applications of fungicides increased the number of surviving seedlings when seeds were sown in vermiculite or in steam‐sterilized soil. With the exception of benomyl, fungicides were significantly more effective when applied in acetone solutions than when 100 g a.i./100 kg of seed was applied as conventional dry dressings. There was no difference in effectiveness between the two application methods when the dry dressings were applied at 200 g a.i/100 kg of seed. The acetone infusion method had no deleterious effects on germination of disease‐free seed nor on seedling vigour. For a comparable level of control, less fungicide was needed in the infusion treatment than in the dust treatment. If fungicidal treatment of sunflower seeds is used routinely then the introduction of S. sclerotiorum into uninfested land could be controlled.