disponibilidade de boro e correlação com propriedades dos solos do estado do rio de janeiro available boron and correlation with soil properties in rio de janeiro state, brazil

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ID: 146851
1999
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Abstract
Com o objetivo de verificar as relações entre o boro (B) extraível e os teores de argila, carbono (C) e pH, foram determinados os conteúdos de B disponível em 103 amostras do horizonte superficial de solos do Estado do Rio de Janeiro, por colorimetria utilizando azomethina-H, após extração com água quente. Os teores de B variaram de 1,31 a 4,50 mg kg-1 de solo, com média de 2,43 + 0,67 mg kg-1. Os valores de correlação encontrados foram r = 0,29** no que tange a B e C orgânico, e r = 0,27** no tocante a B e argila. O maior valor de correlação foi verificado entre B e pH (r = -0,41**). Os conteúdos de argila e C orgânico influenciaram na disponibilidade de B.
To correlate extractable boron (B), clay and organic carbon (C) content and soil pH, the contents of available B were determinated in 103 soil samples of surface soil horizons from soils of Rio de Janeiro State, Brazil, using azomethin-H after extraction by hot water method. The average content was 2.43 + 0.67 mg kg-1 of B with a variation from 1.31 to 4.50 mg kg-1. The correlation values between B and organic C (r = 0.29**) and B and clay (r = 0.27**) were both significant. The highest correlation was found between B and pH (r = -0.41**). The amount of available B was influenced by clay and organic C contents.
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Authors ;Gustavo Souza Valladares;Marcos Gervasio Pereira;José Mário Piratello Freitas de Souza;Daniel Vidal Pérez;Lúcia Helena Cunha dos Anjos
Journal proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006
Year 1999
DOI
10.1590/S0100-204X1999000300023
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000300023
Keywords
Agriculture (General)

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