Fertilizers and Manure
Fertilizers can provide nutrients as needed. In the case of manure (incl. worm castings), they can also bring Soil Organic Matter (SOM) and beneficial microorganisms.
Major nutrients content of fertilizers typically is expressed by a 3 number rating system. The first number is nitrogen (N), the second number is phosphorous (P), and the third is potassium (K). These numbers represent the percentage of each nutrient found in the product.
Specific weight of fertilizers and manure varies depending on moisture content, with typical value for manure at 400 kg/m3.
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