Search Results for: Tuberous roots in growth
, sulfur , magnesium ), and sometimes trace elements (or micronutrients) with a role in plant nutrition: boron , chlorine , manganese , iron , zinc , copper , and molybdenum . in the past, both organic and inorganic fertilizers were called "manures," but this term is now mostly restricted to man-made
the earth's atmosphere, relatively few plants engage in nitrogen fixation (conversion of atmospheric nitrogen to a biologically useful form). most plants thus require nitrogen compounds to be present in the soil in which they grow. history while manure, cinder and ironmaking slag has been used to improve...
https://www.newworldencyclopedia.org/entry/Fertilizer