E.i. Dupont De Nemours and Company

Charlene Gross Sternberg

James Francis Bereznak

Zen-Yu Chang

Thomas Paul Selby

Richard James Brown

Deborah Ann Frasier

Eric Allen Marshall

King-Mo Sun

Jeffrey Arthur Sternberg

Peter Paul Castro

Constance Happersett

A method for controlling wheat powdery mildew is provided which encompasses applying to the plant, seed, seedling or portion of the plant to be protected, or, to its growing media, an effective amount of a compound of Formula II

Fungicidal fused bicyclic pyrimidinones

Compounds of Formula I, and their N-oxides and agriculturally suitable salts, are disclosed which are useful as fungicides

Fungicidal pyrimidinones

Preparation of fungicidal quinazolinones and useful intermediates

Fungicidal cyclic amides

##STR1## This invention pertains to compounds of Formulae (I), (II), and (III) including all geometric and stereoisomers, N-oxides, agriculturally-suitable salts thereof, agricultural compositions containing them and their use as fungicides, wherein: Q is O or S; and n, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, and R.sup.9 are described in the text.

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Wilmington, DE, United States of America

Charlene Gross Sternberg