Zinc Uptake and Translocation as Influenced by Phosphorus and Calcium Carbonate1
- A. W. Pauli,
- Roscoe Ellis and
- H. C. Moser2
Sand cultures with P32 and Zn65 incorporated were used to determine the influence of CaCO3 and P on uptake and translocation of Zn by navy bean plants (Phaseolus vulgaris). Adding CaCO3 decreased dry weight, top-root ratio and Zn concentration in all plant parts. Calcium carbonate decreased the translocation of Zn, and increased the translocation of P, from roots to leaves. The results suggest that excess CaCO3 influences P-Zn relationships within the plant as well as effecting solubilities of compounds of Zn and P.
Water extractable Zn and P were determined at the end of the experiment. Adding CaCO3 decreased the amount of water extractable Zn and P. On the other hand, high P increased the amount of water extractable Zn which is evidence that the P-Zn interaction problem is not in the soil external to the plant.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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