In Holland representatives of the dairy farmers and industry and the ministry of agriculture have made an agreement about measures that have to be taken by dairy farmers to decrease the emission of ammonia. To the measures belong a lowering of the protein content of rations from 167 gram per kilogram in 2018 to 160 gram in 2025. In 2025 on 50 percent of grassland on sandy soils must water be added to slurry manure when adding it to the soil. Pasturing cows have per year to be 180 hours more on pasture. It is the individual farmers their choice how they will implement the new measures.