timing and type of horticultural oil spray on fruit trees
Despite this mild MD winter weather, I haven't been able to get my act together to spray my fruit trees with my older, DRAGON (maybe 10 yrs+ old) horticultural oil. Some of my fruit tree (Asian pear) buds are breaking. I have read that there are now more refined horticultural sprays where you don't have to worrying about damaging the buds/plants. What are your recommendations?
You will have to read the label of this product. The directions may state to use a greater dilution rate if green is showing. Also, make sure the product is not separating.
Take a look at the Fruit section of our website regarding organic insecticides and the three types of horticultural oil. http://extension.umd.edu/growit/fruit-insecticides
Also look at the VA Tech Spray Schedule. See 'General Information on Pesticides for Home Fruit Use - Insecticides/Miticides' section 3-6. You will find information on Dormant Oil Spray and use.