Kl. Bowen et al., APPLICATION RATES AND SPRAY INTERVALS OF ERGOSTEROL-BIOSYNTHESIS INHIBITOR FUNGICIDES FOR CONTROL OF ENTOMOSPORIUM LEAF-SPOT OF PHOTINIA, Plant disease, 78(6), 1994, pp. 578-581
The ergosterol-biosynthesis inhibitor (EBI) fungicides myclobutanil, t
ebuconazole, diniconazole, and flusilazole were compared with chloroth
alonil and triforine for the control of Entomosporium leaf spot on pho
tinia. Applied weekly, myclobutanil (0.15 g a.i./L) was equal to or be
tter than chlorothalonil (1.35 g a.i./ L) for control of leaf spot, an
d these two fungicides were superior to triforine. Tebuconazole and di
niconazole provided good disease control but reduced growth of plants.
Application of myclobutanil at 2-wk intervals was efficacious in cont
rolling disease. All of the fungicides tested controlled Entomosporium
leaf spot, but only myclobutanil caused no phytotoxicity to photinia.