Unfortunately we do not have the spreader settings for that specific combo and the manufacturer does not list that spreader on their bag of Hi-Yield Iron Plus Soil Acidifier 11-0-0. Due to the thousands of granules on the market and just as many different types of spreaders, you will want to calibrate your spreader to the product you are using and its application rates. You can see a short video on how to accomplish this here.
Yes, Hi-Yield Iron Plus Soil Acidifier 11-0-0 can be used on azaleas.
Hi-Yield Iron Plus Soil Acidifier 11-0-0 is designed to help correct yellowing of plants and grass. It is not labeled for use around tomato plants.
Hi-Yield Iron Plus Soil Acidifier 11-0-0 is labeled to be used as needed.
Hi-Yield Iron Plus Soil Acidifier 11-0-0 can be reapplied with subsequent treatments as needed per the product label. Timing can vary on when to reapply. When plants are yellowing, poorly flowering, or not responding to fertilizer treatments is the best time to use this.