Deficiency of phosphorus on tomato plant

Hy steemians:
I hope you are all well and happy;

This is the leaf of tomato plant (Lycopersicum esculentum) show that there is a deficiency of phosphorus therefore its color is purple on its margin , if the phosphorus is not available of the plant properly its growth retard and shows purple color on its margin and plant become week so , if any people have this issue than there is deficiency of phosphorus in the plant so, we need to provide phosphorus properly.
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