No. Potassium and phosphorus are two other macro nutrients. There are also some micro ones. (Going on the basis of what I read long ago or learned in school, m

No. Potassium and phosphorus are two other macro nutrients. There are also some micro ones. (Going on the basis of what I read long ago or learned in school, maybe there is more current science now.) But all the nutrients can be got from organic manure and compost.