Response of Plants to Polyphosphate on Calcareous Soils1
- J. L. Stroechlein,
- S. A. Sabet and
- D. M. Clementz2
Ammonium polyphosphate (APP) was compared to ammonium orthophosphate (AOP) with successive crops grown on four calcareous soils in the greenhouse. Barley (Hordeum vulgare) the first crop, responded to P on three of the soils, with AOP superior to APP on two soils. With tomatoes (Lycopersicon esculentum), the second crop, APP was significantly better than AOP on all soils. APP was a satisfactory P source and was superior to AOP for the second crop.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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