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Chivasso, Torino, Italy

Hello everybody, I'm 16 and I'm from Italy, this year I'd like to try to fertigate my giant pumpkin with a venturi injector. Does somebody know how to calculate the injection rates? How much nitrogen, phosphorus, potassium, calcium and magnesium a giant pumpkin needs? If i know how much nutrients a plant needs I can calculate how much fertilizer I have to use for every irrigation. So any suggestion?

3/3/2014 8:07:51 AM