2009
DOI: 10.1590/s1415-43662009000700004
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Lime and gypsum to improve root depth of orange crop in an Ultisol of the Coastal Tablelands

Abstract: Coastal Tableland is a landscape unit in the North East of Brazil in which the main soils are Ultisols. In these soils, a compacted layer denominated "cohesive horizon" occurs and root growth is limited by it. An experiment with five treatments and six replications was set up in order to study how liming and gypsum could improve root depth of orange (Citrus sinensis L. Osbeck) crop in an Ultisol in which a compacted layer was found at 0.3 m. Treatments were: A - No liming and no gypsum; B - Liming to achieve 6… Show more

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Cited by 10 publications
(9 citation statements)
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“…There was a reduction in the value of saturated hydraulic conductivity and an increase in soil water retention at the depth of 0.2-0.4 m, confirming the heterogeneity of the soil profile and consistent with reported data (Sobral et al, 2009;Fernandes et al, 2011). The larger precipitations have always been recorded away from the plant and close to the microsprinklers ( Figure 3).…”
Section: Resultssupporting
confidence: 90%
“…There was a reduction in the value of saturated hydraulic conductivity and an increase in soil water retention at the depth of 0.2-0.4 m, confirming the heterogeneity of the soil profile and consistent with reported data (Sobral et al, 2009;Fernandes et al, 2011). The larger precipitations have always been recorded away from the plant and close to the microsprinklers ( Figure 3).…”
Section: Resultssupporting
confidence: 90%
“…O sulfato possui elevada mobilidade no solo, especialmente na camada superficial, conforme já discutido. Contudo, sua lixiviação no solo não acontece na forma de ânion, mas na forma de compostos formados com outros cátions presentes no solo, cuja afinidade é superior a do Ca, destacando o K e o Mg como íons acompanhantes do sulfato (Sobral et al, 2009).…”
Section: Resultsunclassified
“…Dentre os solos que ocorrem nos tabuleiros costeiros estão os Argissolos, os quais, na sua maioria são ácidos e de baixa fertilidade (Sobral et al, 2009). Nesses solos a calagem é recomendada pelos métodos: do alumínio trocável e/ou da elevação do cálcio e do magnésio para valores pré-estabelecidos e pelo método da saturação por bases.…”
Section: Introductionunclassified