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A garden is only as good as the ground that it's planted in. Discussion forum for the many ways to improve the soil where we plant our gardens.

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Old February 28, 2013   #1
sun622
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Had a customer today ask me for Ammonium Phosphate 21-0-0. I gave him some lawn fertilizer made by howard Johnson we sell. He wants to put it on his tomatoes. His wife told me he's been growing tomatoes for 40 years so "he knows what he's doing". Anybody ever use 21-0-0 on their tomatoes?? I never would.
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Old February 28, 2013   #2
Stvrob
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Wouldn't ammonium phosphate be something like 20-20-0? Do you mean ammonium nitrate or ammonium sulfate

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Old February 28, 2013   #3
Redbaron
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I never would either. Might give it a burst of growth in the spring though.
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Old February 28, 2013   #4
TomNJ
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Depends how much he uses and his soil fertility. My garden soil in NJ tested very high in phosphorus and potassium, so I only needed to supplement nitrogen. I used high nitrogen lawn fertilizer (29-0-4) in small quantities to lightly boost the nitrogen when needed. I have also used blood meal (13-0-0) for the same purpose.

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