Soil Factors Influencing the Growth of Cotton Following Peach Orchards1
- C. R. Lee and
- N. R. Page2
Cotton grown in pot cultures of Faceville sand (pH 5.3) from a peach orchard site showed stunted growth, leaf chlorosis, and high concentrations of Zn and Mn. Raising soil pH to 6.0 or above with CaCO3 + MgCO3, peach tree ash, or Na2CO3 produced normal growth and decreased concentrations of Zn and Mn in cotton plants. Adding P as Ca(H2PO4)2 or CaSO4 + MgSO4 did not improve growth. The sulfates which lowered soil pH accentuated leaf abnormalities and increased plant content of Zn and Mn.
Lowering pH of Eustis sand, which had never been in peaches, to 5.0 had no effect on growth of cotton. Adding an amount of Zn much below that sprayed on peach trees during the life of an orchard produced stunted growth and chlorotic leaves.
Stunted growth of cotton following peaches appeared to be caused largely by Zn spray residues made available by low soil pH. The trouble was corrected by raising soil pH to 6.0 or above.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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