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Liming of Latosols and the Effect on Phosphorus Response
Author(s) -
Mendez Jose,
Kamprath E. J.
Publication year - 1978
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1978.03615995004200010019x
Subject(s) - lime , saturation (graph theory) , phosphorus , pennisetum , zoology , chemistry , oxisol , environmental science , agronomy , mathematics , soil science , biology , soil water , materials science , metallurgy , organic chemistry , combinatorics
Studies were conducted with six Latosols from Panama to evaluate exchangeable Al as the criterion for determining lime rate and the effect of liming on P availability. Liming rates equivalent to exchangeable Al × 1.5 neutralized most of the exchangeable Al and adjusted pH to levels satisfactory for plant growth. Such liming rates were considerably less than those required to adjust the pH to 7. At low rates of applied P, liming to neutralize Al significantly increased growth of millet ( Pennisetum typhoides , var. Gahi 1), but had no beneficial effect if high rates of P were applied at < 60% Al saturation. However, liming significantly increased growth at all P rates if the Al saturation is > 60%.