Question

what was NPK fertiliser​

Answer 1

Answer:

FERTILIZERS AND FERTILIZATION.

NPK fertilizers commonly differ in their NPK ratios. An NPK compound 13-13-21, for example, means that the ratio of N : P2O5 : K2O of these plant nutrients in the compound is 13% N, 13% P2O5, and 21% K2O. Further NPK combinations are 10-15-20, 15-15-15, 12-12-17, 12-12-20.

Plant food or fertilizer (fertilizer in the U.S.) provide the nutrients for healthy plant growth. 'NPK' stand for Nitrogen, Phosphorous, K for Potassium or Potash. '5 – 3 – 5' are the ratios of NP&K in the pack or bottle. In this case 5 parts Nitrogen, 3 parts Phosphorous, 5 parts Potash.

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