2011
DOI: 10.1590/s0034-737x2011000600018
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Abstract: Critical levels of phosphorus in sugarcane soils of Pernambuco State, BrazilPhysical, chemical and mineralogical properties of soils are not observed to estimate phosphorus (P) availability in Pernambuco, Brazil. The aim of this work was to determine phosphorus critical levels in distinct soils, using different chemical extractors, considering clay fraction content and quality, and to relate soil physical, chemical and mineralogical characteristics with P critical levels. The soils were classified like: Typic … Show more

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Cited by 6 publications
(3 citation statements)
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References 8 publications
(6 reference statements)
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“…The literature reports that the extraction power of an extractor is exhausted or worn out, leading to the underestimation of the levels of available soil P, to the same extent as the clay content of the soil increases (Bortolon & Gianello, 2008) or remaining P decreases (Simões Neto et al, 2011) (Tables 1 and 7). …”
Section: Effect Of Preferential Extraction Of P-ca and Of Mehlich-1 Cmentioning
confidence: 99%
“…The literature reports that the extraction power of an extractor is exhausted or worn out, leading to the underestimation of the levels of available soil P, to the same extent as the clay content of the soil increases (Bortolon & Gianello, 2008) or remaining P decreases (Simões Neto et al, 2011) (Tables 1 and 7). …”
Section: Effect Of Preferential Extraction Of P-ca and Of Mehlich-1 Cmentioning
confidence: 99%
“…Também são escassos na literatura brasileira trabalhos de adubação com hortaliças folhosas visando correlacionar à produção dessas plantas com teores de nutrientes no solo, particularmente o P para a definição de níveis críticos. O nível crítico de um nutriente no solo é o teor abaixo do qual há grande possibilidade de resposta a sua aplicação, por meio da adubação, e acima do qual, essa possibilidade diminui (SIMÕES NETO et al, 2011).…”
Section: Introductionunclassified
“…Nesta região, as recomendações de P para cana-de-açúcar baseiam-se nos trabalhos de Marinho & Albuquerque (1978), em Alagoas, e de Sobral & Lira (1989), em Pernambuco. Estes autores, apesar de terem se preocupado com a produtividade esperada, não consideraram a influência do FCP na disponibilidade de P. Além disso, o uso de variedades mais produtivas e mais eficientes quanto à utilização do P do solo também deve ser contemplada na recomendação da adubação fosfatada (Simões Neto et al, 2011).…”
Section: Introductionunclassified