agrology vs planting

agrology

noun
  • The science and art of agriculture. 

  • A subdiscipline of agronomy (the science of utilizing animals, plants, and soils) and of soil science which addresses the influence of edaphic (soil-related) conditions on crop production for optimizing it. 

planting

noun
  • A plantation. 

  • The act of setting a plant in the ground for growth. 

  • A plant (or clipping) that has been freshly planted. 

How often have the words agrology and planting occurred in a corpus of books? (source: Google Ngram Viewer )