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The three most important plant nutrients are nitrogen, phosphorus, and potassium. NPK fertilizers are named for the chemical symbols of these elements: '''N''' for nitrogen, '''P''' for phosphorus, and '''K''' for potassium. Fertilizers are marked with the percentage of each of these nutrients. For example, a fertilizer may be marked as '''18-51-20''', which means it is 18% Nitrogen, 51% Phosphorus, and 20% Potassium. You may notice that these numbers do not add to 100% - the remainder is made up of "fillers". Fillers prevent the nutrients from clumping together and "burning" the plant.
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The three most important plant nutrients are nitrogen, phosphorus, and potassium. NPK fertilizers are named for the chemical symbols of these elements: '''N''' for nitrogen, '''P''' for phosphorus, and '''K''' for potassium. Fertilizers are marked with the percentage of each of these nutrients. For example, a fertilizer may be marked as '''18-51-20''', which means it is 18% Nitrogen, 51% Phosphorus, and 20% Potassium. You may notice that these numbers do not add to 100% - the remainder is made up of "fillers". Fillers prevent the nutrients from clumping together and "burning" the plant.
Revision as of 19:58, 2 April 2021
The three most important plant nutrients are nitrogen, phosphorus, and potassium. NPK fertilizers are named for the chemical symbols of these elements: N for nitrogen, P for phosphorus, and K for potassium. Fertilizers are marked with the percentage of each of these nutrients. For example, a fertilizer may be marked as 18-51-20, which means it is 18% Nitrogen, 51% Phosphorus, and 20% Potassium. You may notice that these numbers do not add to 100% - the remainder is made up of "fillers". Fillers prevent the nutrients from clumping together and "burning" the plant.
