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Title: | Compactação de solos cultivados com cana-de-açúcar: II -quantificação das restrições às funções edáficas do solo em decorrência da compactação prejudicial |
Other Titles: | Compaction of soils cultivated with sugarcane: II - quantification of restrictions to soil edaphic functions as a result of harmful compaction |
Keywords: | Saccharum sp. Pressão crítica Cana-de-açúcar - Colheita mecanizada Structural degradation Critical pressure |
Issue Date: | 2010 |
Publisher: | Associação Brasileira de Engenharia Agrícola |
Citation: | SEVERIANO, E. da C. et al. Compactação de solos cultivados com cana-de-açúcar: II -quantificação das restrições às funções edáficas do solo em decorrência da compactação prejudicial. Engenharia Agrícola, Jaboticabal, v. 30, n. 3, p. 414-423, maio/jun. 2010. |
Abstract: | The reduction of a second growing season of sugarcane can lead to spread soil compaction, due to mechanical harvesting of sugarcane in the rainy season. Thus, it is necessary to define strategies to minimize this process. This study aimed to model the compressive behavior of the soil based on the critical pressure. The effects of the mechanized harvesting of sugarcane at different times of the crop were also assessed in a Red-Yellow (LVA) and in a Haplic Cambisol (CX). Soil macroporosity, preconsolidation pressure at different soil water contents and bulk density were determined in undisturbed soil samples. With the incorporation of the critical bulk density in modeling the soil compressive behavior, it was possible to estimate the critical pressure. The critical pressure overestimates the soil bearing capacity. The mechanized harvesting of sugarcane made in the friability zone did not cause harmful compaction to the crop. The sugarcane can be harvested mechanically without causing structural degradation in the LVA and CX, respectively, at soil water contents up to 0.16 and 0.21 kg kg -1 . |
URI: | http://repositorio.ufla.br/jspui/handle/1/37242 |
Appears in Collections: | DCS - Artigos publicados em periódicos DEG - Artigos publicados em periódicos |
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ARTIGO_Compactação de solos cultivados com cana-de-açúcar: II -quantificação das restrições às funções edáficas do solo em decorrência da compactação prejudicial.pdf | 188,34 kB | Adobe PDF | View/Open |
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