NSS-21 Single Superphosphate – Single superphosphate (SSP) was the first commercial mineral fertilizer and it led to the development of the modern plant nutrient industry. This material was once the most commonly used fertilizer, but other phosphorus (P) fertilizers have largely replaced SSP because of its relatively low P content
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Nutrient Source Specifics – Single Superphosphate
March 30, 2019 | Fact Sheet | Research