Tolerance of wheat cultivars to metribuzin and implications for the control of Bromus diandrus and B. rigidus in Western Australia.
Of 9 wheat cultivars tested in field experiments in 1986-87 the southern Australian cultivar Blade was the most tolerant to metribuzin applications for control of B. diandrus and B. rigidus. However, grain yields of cv. Spear and cv. Dagger were severely reduced. Metribuzin alone (100-150 g/ha) or as a tank-mix with pendimethalin at 250 g/ha incorporated at the time of sowing, gave reliable control of B. diandrus and B. rigidus with good crop safety when used on cv. Blade. Metribuzin was less selective post-em.