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NPK Calculator

Gardening resources often recommend chemical fertilizers with NPK ratios. NPK ratio is a rating system describing the amount of nitrogen, phosphorus, and potassium in a fertilizer. For example, the fertilizer urea is labeled 16-16-8, 15-15-15,… NPK Calculator can help you produce compound fertilizers, which contain N, P (P2O5), and K2O, by mixing straight fertilizers.

Estimating the amount of fertilizer needed, based on soil test or recommendation,and nutrient ratio of the fertilizer. How much fertilizer to add to your farm, lawn or garden is important because over-fertilization is toxic to soil and plants. The NPK Calculator helps you avoid wasting money on excess fertilizer.

KG
KG
N
KG
P2O5
KG
K2O
KG

Results

Fertilizer Weight
[[ n ]] [[ npk1Objs[k] | number: 2 ]] KG
Total [[ npkSum(npk1Objs) | number: 2 ]] KG

Results

Fertilizer Weight
[[ k ]] [[ O | number: 2 ]] KG

NPK Calculator are only meant to assist you in determining the appropriate amount of fertilizer that may be applied. The results are only as accurate as the data entered and are not designed or intended to serve as a replacement for other standard University recommended practices. For example, in a large scale operation, this spreadsheet should in no way be considered a substitute for a nutrient management plan or a replacement for professional software programs. The NPK Calculator accepts no liability for fertiliser programs developed using this tool.

If you experience any technical difficulties or have questions about the program, please Feedback. We highly appreciate your cooperation and we thank you in advance for taking the time to share your bright ideas.

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