Phosphorus fertilizers - Superphosphate and triple superphosphate fertilisers supply phosphorus for root enhancement and flower formation. about 9 yrs ago Gradual-release fertilizers generally are available the shape of small granules or pellets. They're sprinkled over the soil surface area all over vegetation or mixed into potting soil for container-grown plants. https://npk-12-12-17-fertilizer-a15790.oblogation.com/36306908/the-definitive-guide-to-fertilizers-for-pomegranate-farms-afghanistan