Effects of triadimefon and triadimenol as seed dressings on incidence of fusiform rust on loblolly pine pinus taeda seedlings

Kelley, W.D.; Williams, J.C.

Plant Disease 69(2): 147-148

1985


ISSN/ISBN: 0191-2917
Accession: 005331777

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Abstract
Triadimefon or triadimenol applied as seed dressings at rates of 0.31, 0.62 and 1.25 g a.i./kg of seed protected emerging seedlings of P. taeda from rust caused by Cronartium quercuum f. sp. fusiforme. Triadimefon was superior to triadimenol. The degree of protection for each compound decreased as seedling age increased. Both compounds were compatible with the animal repellent and fungicide thiram. Triadimefon applied as a seed dressing at a rate of 1.25 g a.i./kg of seed provided protection equal to that of the triadimefon seed soak (800 mg triadimefon/l, 24-h seed soak) currently being used by forest tree nursery personnel; both methods provided adequate protection to emerging seedlings for at least 36 days after sowing.