Chemical Properties of a Forest Soil Affected by Fertilization and Submergence

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Abstract
In samples from the Al horizon of poorly drained flatwoods soils from the Gulf Coastal Plain (Typic glossaqualfs), a combination of lime and phosphorus abruptly increased soil pH after 6 days of laboratory submergence. Treatment with only one of these additives, with other conditions the same, did not influence pH. After submergence for 60 days, pH values were near neutral. Redox values were lowered about 500 mv by waterlogging; they were not altered by lime or phosphorus application.Drying after submergence decreased pH, but effects of waterlogging remained. Submergence reduced levels of exchangeable Al, Ca, and Mg, probably by changing the acid strength of the soil, and shifted Al‐P to Fe‐P. Results of cyclic submergence indicate that effects are slowly reversible.

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