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To assure a safe, reliable and efficient product, Arbor Care 15-8-4 provides a continuous steady source of slow release nitrogen from methylene diurea (MDU) along with soluble, non-chloride potassium. The N release period, when used for deep root injection, extends three to six months depending on the soil and climate conditions. There is no danger of phytotoxicity. Arbor Care is a true solution, ideal for foliar spray application and soil injection for trees and ornamentals. No special agitation is needed. 15-8-4 is compatible with fungicides, herbicides and insecticides and can be mixed and sprayed in 1 application. 15-8-4 has an extremely low salt index. 2-1/2 Gallon container. Application Rates: Root Injection Rates: 1 gallon and 5 oz. per 100 gallons of water. 15-8-4 should be injected into the top 4” to 8” of soil where feeder roots extend. Start application of fertilizer approximately 2-3 feet from tree trunk and extend the same distance beyond the drip line. A grid pattern should be laid out. Spacing should be every 2-1/2 ft. to a depth of 4” to 8”. A minimum of 5 gal. of tank mix should be applied per inch of tree diameter. Inject approximately 1/2 gal. of fertilizer solution at each point.
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