The fertilizers include nitrogen, potassium, and phosphorus, all of that are necessary nutrients for crops. There are two forms of fertilizers: Organic fertilizer is derived from crops and animals and Inorganic fertilizer is derived from chemical substances and minerals. This is an assessment of the 4 differing kinds of fertilizer, https://emiliogyriz.thezenweb.com/an-unbiased-view-of-compound-fertilizers-afghanistan-75928156