Crescimento radicular de três espécies de cobertura vegetal em camadas de solo compactadas artificialmente

• Autor(a) principal: Piffer, Cássio Roberto [UNESP]
• Data de Publicação: 2010
• Outros Autores: Benez, Sergio Hugo [UNESP], Bertolini, Erick Vinicius [UNESP], Cominetti, Fabio Rensi [UNESP], Silva, Paulo Roberto Arbex [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://e-revista.unioeste.br/index.php/variascientiaagraria/article/view/2654; http://hdl.handle.net/11449/140780
• topic: Soil compaction; Root system; Vegetal covering; Compactação do solo; Sistema radicular; Cobertura vegetal

This paper aimed to study the development of root system of amaranth, millet and “pé de galinha” according to four density levels of soil compaction, characterized by 1.21; 1.31; 1.41 and 1.51 Mg m-3 densities in Distroferic Red Nitrosoil. The experiment was carried out at Agricultural Science University of UNESP, Botucatu campus - SP, in a randomized block experimental design. Pots were assembled with four rings of overlaid PVC tubes, totalizing 40 cm high. The ring at 10 to 20 cm depth was the only one compacted. Tubes were assembled and buried at 40 cm depth. The experiment was finished at inflorescence phase of each culture. Measurement of root length, root volume, root diameter, and root dry matter were taken as well as dry matter and length of aerial part of plants. Results showed that “pé de galinha” had root system with the longer length, volume and dry matter working in compacted soil layer up to 1.41 Mg m-3; millet showed the highest amount of dry matter at aerial part showing good characteristic for soil covering; amaranth was sensitive to soil compaction in all the studied densities and variables.