I’m having trouble with a lab question. I have the document open. Its the protocol for The Fertilizer Project and I am not understand the…

I’m having trouble with a lab question. I have the document open. Its the protocol for The Fertilizer Project and I am not understand the calculations. I have to determine how much fertilizer I need. 

GHG Protocol Agricultural GuidanceInterpreting the Corporate Accounting and Reporting Standardfor the agricultural sector GHG Protocol Agricultural Guidance Contents Chapter 1: Introduction…