Why are inorganic fertilizers bad?
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Another disadvantage of inorganic fertilizers is that besides the essential nutrients required by plants, they contain certain compounds and salts which a plant is unable to absorb and hence, are left behind in the soil. With time, these compounds build up in the soil and can even change its chemistry.
Inorganic fertilizers also increase the possibility of high salinity. Saline soils have too much salt and can negatively affect a plant’s ability to absorb nutrients and water. These fertilizers can also cause a crust on top of the soil, advises Oregon State University Extension Service.