Photo credit: FREEPIK
Since 2022, it is mandatory in Spain to have a recent product analysis when applying organic fertilizers. However, this is not yet a common practice among farmers. Pig slurry, as a widely used organic fertilizer, play an important role in the fertilization strategy of many farmers. Understanding the nutrient content of pig slurry is important for the nutrient management. However, without knowing a nutrient analysis it is not possible to know the nutrient content of the slurry. This increases the risk of either over or underfertilizing the field. Underfertilizing the crop might prevent the crop reaching its yield potential. Yet, overfertilizing might result in negative externalities due to environmental risks. By analysing the composition of pig slurry, farmers can adjust their mineral fertilization strategies more accurately and adjust the artificial fertilizer gift accordingly.