When you buy a fertilizer bag, you can read clearly the percentage nitrogen (N), phosphorus (P2O5), and potash (K2O) by weight on the bag. For example, So, a 100-pound bag of 10-20-10 fertilizer contains 10 pounds of nitrogen, 20 pounds of phosphorus, and 10 pounds of potassium. This equals a total of 40 pounds of nutrients. The rest of the fertilizer, or 60 pounds in this example, is a carrier or filler such as sand. Read more about nutrients in a fertilizer bag.

Per Acre or Per Sqft Fertilizer Calculator

Well after you understood the nutrients packed in a fertilizer bag, a problem arise regarding the quantification of fertilizer based on the area of land. This is needed to maintain a proper balance and preventing excess application of fertilizer. So here is a simple calculator that provides you some solid numbers about the amount of fertilizer need per acre and per sqft.

result is sent to your mail..

In the next posting, we will publish a calculator for knowing the amounts of fertilizer in pints, cups, tablespoons, and teaspoons which is very useful when you curate gardens through pots.

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