Top-dressing: Apply DAP fertilizer for the soil surface area all around perennial crops, for instance fruit trees or vineyards. This can be accomplished with a broadcast spreader or maybe a hand-held applicator. DAP fertilizer is highly soluble; this makes it a good candidate for fertigation. DAP fertilizer comes in granules, https://listfav.com/story21993758/indicators-on-urea-fertilizer-nitrogen-you-should-know