The various manufactured and natural fertilisers contribute different nutrients for plant growth. Potash contains potassium; urea contains nitrogen; elemental sulfur contains sulfur; reactive rock phosphate contains phosphorus; and superphosphate contains phosphorus, sulfur and calcium.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.
Add new comment