News Feed › Forums › Soil Health › Sap results for Harriet Mellas Johnson su grown tomato. › Reply To: Sap results for Harriet Mellas Johnson su grown tomato.
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I think it is safe to assume that it is a reduced environment at least in areas, I wouldn’t read too much into the ammonium levels as they can climb rapidly if the leaf sample isn’t tested quickly enough (protein catabolism)