Fertilizers

This category covers soil amendments of all types. That is, things that we add to the soil to change or improve certain characteristics to make the soil more amenable to growing particular crops. Soil amendments can do things like change pH, modify texture and water retention, add nutrients, and fix nitrogen.

  • The most important nitrogen fixers are the legumes, plants that are in the huge Fabaceae (Pea) family. A sample of these includes:
  • Acacia
  • Alfalfa
  • Bean
  • Clover
  • Gorse
  • Hyacinth bean
  • Indigo
  • Lentil
  • Pea
  • Soybean
  • Minerals used to modify soil pH include:
  • Anhydrite
  • Apatite
  • Chalk
  • Dolomite
  • Epsom salt
  • Gypsum
  • Kainite
  • Lime (Limestone)
  • Marl
  • Nitrate
  • Phosphates
  • Potassium
  • Things used to add nutrients to soil include (among many others):
  • Buckwheat
  • Manure (from cattle)
  • Menhaden (a type of fish in the herring family)
  • Rye
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