This formula is effective perfectly for some vegetable gardens assuming that your soil is in very good problem, to start with. When you've got excessive P or K with your backyard garden based in your soil test, cut out the bone food (P) or feather food (K) as required. Micro https://chanceibska.jts-blog.com/28987209/5-simple-statements-about-npk-15-15-15-vietnam-explained