Seed Treatment with Systemic Fungicides to Control Cochliobolus sativus on Barley. W. C. Luz, Research Plant Pathologist, Centro Nacional de Pesquisa de Trigo, Caixa Postal 569, 99100, Passo Fundo, RS, Brazil. J. C. Vieira, Research Plant Pathologist, Centro Nacional de Pesquisa de Trigo, Caixa Postal 569, 99100, Passo Fundo, RS, Brazil. Plant Dis. 66:135-136. Accepted for publication 28 April 1981. Copyright 1982 American Phytopathological Society. DOI: 10.1094/PD-66-135.

Nuarimol and fenapanil were the most effective of six systemic fungicides tested as seed dressings to control infection of barley from seed and airborne Cochliobolus sativus. Imazalil and nuarimol improved germination; however, the latter and triadimefon were phytotoxic, causing delayed emergence, reduced growth of the plants, and dark green coloration of the leaves.

Keyword(s): Helminthosporium sativum, seed infection, spot blotch.