2001
DOI: 10.1590/s0100-06832001000200027
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Liberação de nutrientes durante a decomposição de palha de aveia preta (Avena strigosa) com diferentes teores de silício

Abstract: RESUMOO Si absorvido pelas plantas é, em sua maior parte, depositado na parte externa da parede celular de folhas como uma camada de sílica amorfa (SiO 2 .nH 2 O) e poderia afetar a decomposição da palha no solo. Com o objetivo de avaliar o efeito da presença deste elemento no tecido vegetal sobre a decomposição da palha, foi desenvolvido um experimento. Nesse experimento, a parte aérea de plantas de aveia preta, cultivadas em solução nutritiva com e sem adição de Si, foi incubada em tubos de PVC com areia e s… Show more

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“…It was noted that this fact may possibly be explained by the occurrence of Si polymerization in the nutrient solution with increase in its concentration, reducing its absorption. Another explanation is that most of the absorbed Si, about 90%, is immobilized as biogenic opal on the outside of the cell wall (Silva and Bohnen, 2001), with only a small free amount in the plant.…”
Section: Varieties (V)mentioning
confidence: 99%
“…It was noted that this fact may possibly be explained by the occurrence of Si polymerization in the nutrient solution with increase in its concentration, reducing its absorption. Another explanation is that most of the absorbed Si, about 90%, is immobilized as biogenic opal on the outside of the cell wall (Silva and Bohnen, 2001), with only a small free amount in the plant.…”
Section: Varieties (V)mentioning
confidence: 99%