What is the best NPK ratio for vegetables?

Vegetative stage: balanced 19:19:19 for equal growth. Pre-flowering: 12:32:16 to encourage blooms. Fruiting stage: 0:52:34 (mono-potassium phosphate) to boost fruit size and sugar. For organic growers, substitute with mustard cake (nitrogen), bone meal (phosphorus), and wood ash or banana peel powder (potassium) at each stage.