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Therefore, DAP is also an important additive in the wine making and brewing industry. However, a majority of the demand arises from the fertilizer sector. DAP as a chemical salt is used in many industries and the market for DAP can be segmented according to its applications into fertilizers, wine making or brewing, fire retardant, metal industry (as flux), and in the food industry (yeast nutrient).
Composition of DAP. DAP fertilizer is widely used in the agricultural industry. In order to be labeled as DAP, it must meet the standard grade of 18-46-0, which refers to the available levels of nitrogen, phosphate and potash, according to the International Plant Nutrition Institute.mounts vary depending on what you're growing. After using DAP fertilizer, the soil will temporarily have an alkaline pH of 8.5, so test the soil using a store-bought kit before planting to ensure it's returned to the pH level that's right your crops. Store DAP fertilizer in a cool, dry area away from water and light.