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Old 02-08-2013, 04:49 AM
RAlmaroad RAlmaroad is offline
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Join Date: Dec 2006
Location: SC
Posts: 1,981
I spray a lot of orchard trees now. My aim is to get that oil into tiny crevices where eggs, large and anything thriving are existing. Oils will not prevent the hatching of eggs the the actions is to smother the insects. Horticulture oil (Mineral Oil) is lighter than the petroleum oil so it can penetrate more into the bark when temps are somewhat cooler. The petroleum with warmer weather will kill a little faster. I tend to use Horticulture oil from November to February and Ultra Oil until Red Tip (Budding Growth) appears. Then its time for Fire Blight (Streptomycin) preventive measures during blooming and then the Orchard spray.
Both are great products but with a little variable in temps.
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