Can Stylet-Oil be sprayed prebloom as a sulfur replacement on grape?
Yes. As an early-season sulfur replacement growers should make 3 prebloom oil applications @ 1 to 1.5% spray concentration at 40 to 50 gpa every 10 to 14 days. Begin spraying at budbreak or the 2 to 4-inch shoot growth stage. An optional 4th oil spray at bloom may be made as a tank mix with Rovral (1 lb / Acre), Elevate or Vangard for simultaneous Botrytis and powdery mildew control. The oil has no effect on flower bloom or pollination.