Fertilizer affordability is key for companies including Mosaic (MOS), Nutrien (NTR), CF Industries (CF), and Israel Chemicals (ICL). Higher fertilizer affordability helps increase the demand for fertilizers. When fertilizer prices increase, higher affordability is good for fertilizer demand, which is positive for the earnings growth. Fertilizers became more affordable week-over-week. When the Fertilizer Affordability Index is below one, it suggests that the fertilizer prices were relatively affordable last week compared to the base year of 2005 when Mosaic set the index to one.