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Plant and Soil Composition as Affected by an Alternative Lime Source Containing Sulfate
Author(s) -
Marsh Brian H.,
Grove J. H.
Publication year - 1992
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/sssaj1992.03615995005600060030x
Subject(s) - lime , loam , chemistry , dry matter , soil ph , sulfate , soil water , fertilizer , agronomy , environmental chemistry , zoology , horticulture , biology , metallurgy , ecology , materials science , organic chemistry
The reduced crude oil conversion system uses a fluidized bed combustion system for in situ SO 2 removal. The reduced crude conversion spent lime (RCCSL) that results contains mostly CaO, CaSO 4 , and MgO. This material was evaluated as an alternative lime source in greenhouse studies with tobacco ( Nicotiana tabacum L.) and corn ( Zea mays L.). Equivalent amounts (CaCO 3 basis) of RCCSL, reagentgrade Ca(OH) 2 , and agricultural‐grade (ag) dolomitic limestone were applied at rates of 0, 0.33, 0.67, 1.0, and 1.33 times the 50 mmol CaCO 3 kg −1 soil lime requirement (LR) to an acid Maury silt loam (fine, mixed, mesic Typic Paleudalf). The RCCSL and Ca(OH) 2 were equivalent in raising the soil pH and reducing active Al 3+ , H + , and Mn 2+ . Ag lime was less effective. Soil solution electrical conductance increased with increasing rate for Ca(OH) 2 and RCCSL, but not for ag lime. After 5 wk, plant dry matter was highest at 0.33 and 0.67 LR. Dry matter was reduced for both crops by the highest application rate of all lime sources. Leaf tissue N, K, S, B, and Zn generally declined with increasing lime rates. Chloride accumulation increased with rate and was higher with RCCSL. No deleterious or unusually high amounts of Cd, Pb, Ni, or V were detected. The overliming response could not be ascribed to impaired P, Mg, or Zn nutrition in either species and was speculatively attributed to Al toxicity at near‐neutral pH. The results indicate that field evaluations of the RCCSL material are warranted.