Fungicide evaluation for seed treatment of wheat (Triticum aestivum L.) in the control of Pyricularia oryzae and Helminthosporium sativum.
Triadimenol, ethyltrianol, anilazine, thiram, captan, iprodione and tolyfluanid were tested as seed treatments on wheat cultivars BR 20-Guató with 30% natural infection by H. sativum (Cochliobolus sativus) and Anahuac with 6% infection by P. oryzae [Magnaporthe grisea] in Dourados, Mato Grosso do Sul, Brazil, in 1989. Triadimenol, ethyltrianol, iprodione + thiram and triadimenol + anilazine gave the best control of C. sativus; and triadimenol, triadimenol + anilazine, ethyltrianol + anilazine, ethyltrianol + thiram, ethyltrianol and iprodione + thiram completely controlled M. grisea on seeds in the lab. In the field, ethyltrianol and iprodione + thiram gave the best control of C. sativus. Seedborne transmission of M. grisea was not detected in the field.