994 resultados para extrato de orégano
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1899/07 (A2,N19).
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1900/12 (A3,N36).
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1899/12 (A2,N24).
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1899/03 (A2,N15).
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1902/03/31 (A5,N51).
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1907/12 (A10,N11).
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1903/09/30 (A6,N68)- (A6,N69).
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1898/10 (A1,N10).
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1905/04 (A8,N4).
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1900/04 (A3,N28).
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1899/01 (A2,N13).
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1900/08 (A3,N32)-1900/09 (A3,N33).
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1907/05 (A10,N5).
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1904/05/31 (A7,N5).
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Distribution and stocks of soil organic matter (SOM) compartments after Pinus monoculture introduction in a native pasture area of a Cambisol, Santa Catarina, Brazil, were investigated. Pinus introduction increased soil acidity, content of exchangeable Al+3 and diminished soil nutrients. Nevertheless, soil C stock increased in all humic fractions of the 0-5 cm layer after Pinus afforestation. In the subsurface, the vegetation change only promoted SOM redistribution from the NaOH-extractable humic substances to a less hydrophobic humin fraction. Under Pinus, soil organo-mineral interactions were relevant up to a 15 cm depth, while in pasture environment, this mechanism occurred mainly in the surface layer.