PROBIOTIC is an aerobic fertilizer. It should, therefore, be applied to the top two inches of soil, using either a drop spreader or broadcast spreader, and worked into the soil. For best results on turfgrass, apply together with HUMATE Ag1635, preferably when verti-cutting, aerifying, or top-dressing. Lightly brush and/or water in. When applied at the specified rate, PROBIOTIC fertilizer will not burn.
The initial application of PROBIOTIC on turfgrass should be 10 lb./1000 ft2. As your soil environment improves, slowly reduce this rate until you reach 5 to 6 lb/1000 ft2. Each application should last at least four and more likely six weeks.