This formula works effectively for the majority of vegetable gardens assuming that your soil is in good problem, to start with. If you have an excessive amount P or K in the garden based on the soil test, eliminate the bone meal (P) or feather food (K) as required. By https://npk15151568912.thenerdsblog.com/35232086/helping-the-others-realize-the-advantages-of-npk-15-15-15-vietnam-unit