Publicação: Surface Application of Hydrated Lime in Different Crop Systems
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To address the problems of acidity in the surface and subsurface layers and improve soil chemical fertility, three methodology of surface application of hydrated lime (HL) (4Ca(OH)2Mg(OH)2) (ensure that calcium (Ca)+2 occupied 70%, 60%, and 50% of cation exchange capacity (CEC) in the 0.0–0.2 m layer) were evaluated in a Typic Hapludalf in conventional pasture system (CPS), no-till system (NTS), and agropastoral system (APS) in Brazil. The results support the following conclusions: (a) the application of HL corrects surface and subsurface acidity and improve the soil chemical fertility: increasing pH and magnesium (Mg)2+ content in the CPS, NTS, and APS in the 0.0–0.2 m and 0.2–0.4 m layers; increasing base saturation (BS) and Mg+2/CEC in the CPS, NTS, and APS in the 0.0–0.2 m layer; increasing Ca+2 content, CEC, and Ca+2/CEC in the NTS and APS in the 0.0–0.2 m layer; reducing total acidity in the CPS, NTS, and APS in the 0.0–0.2 m layer and in the NTS and APS in the 0.2–0.4 m layer; reducing total acidity and increasing Mg+2/CEC in the NTS and APS in the 0.2–0.4 m layer.
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Agropastoral system, conventional pasture system, no-till system, soil acidity, soil fertility
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Inglês
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Communications in Soil Science and Plant Analysis.
