Just Scentsational’s Sunshine Harvest liquid DAP Diammonium Phosphate is highly soluble and quick dissolving in the soil to release both phosphate and ammonium for plant use. DAP provides a temporary soil alkalization of pH to aid conversion of nitrates and is an excellent way to stimulate the uptake of phosphorous and nitrogen…important nutrients for better and healthier plants and crops. A soil test is recommended before adding any fertilizers. NPK 9-23-0 Size: 1 gallon