The application rate for trees using Fertilome Chelated Iron EDDHA 6% Water Soluble states, "Trees (Including Fruit, Nut and Citrus): Use 1 to 4 Tbsp per one inch of trunk diameter (measured at 3 to 4 feet) and water immediately. Apply at the drip line." This product is not labeled for injection directly into a tree trunk.
We do not recommend that you tank mix Fertilome Chelated Iron EDDHA 6% Water Soluble with any herbicides. The product label indicates to apply 2-4 oz per gallon of water per 500 square feet, and then to water in immediately after application. If you were to use a post-emergent herbicide with that and then immediately water it in, you are going to lose most of the effects of the herbicide. Keep in mind that Atrazine should not be applied to desirable Bermudagrass.
Fertilome Chelated Iron EDDHA 6% Water Soluble is not an Ortho product.
