fertilizer prices are increasing every year

each year, corn farmers face the challenge of applying the optimum amount of nitrogen (N) in the right place and at the right time to increase corn production and reduce at much rate nutrient loss. Soil and weather conditions can  interfere with applying N at the right time.

“Fertilizer prices(http://www.hnfertilizermachine.com/) have changed widely in the last five years,”he says. “farmers are taking a second look at what they apply and how much. It can vary by soil and topography.” 

from the above analysis, fertilizer prices are increasing,then why you not produce your own fertilizer  through buying a complete small fertilizer production line,and besides extra fertilizers can be sold at a higher price, thus solving your own fertilizer problem for your crops, also get some extra earning,dont you think that is a good idea?but, that is also not so easy, how to choose the fertilizer granulator? to make compound fertilizer or organic fertilizer? using disc granulator or rotary drum granulator,both are problems.