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| Espessato,Renan R.; Leite,Fabrício; Guerreiro,Julio C.; Quiqui,Erci M. Del; Azevedo,Ana P. de; Aleixo,Edward V.. |
| ABSTRACT This study aimed to evaluate the development of soybean as a function of traffic levels of an agricultural tractor equipped with radial tires in two collection areas. The experiment was conducted in an area located at the State University of Maringá, Campus of Umuarama-PR, Brazil, in a soil classified as Red Oxisol with sandy texture. The experiment was set in a 5 x 2 factorial arrangement, with five levels of traffic on the same track (T1 = 1, T2 = 6, T3 = 11, T4 = 16 and T5 = 21 tractor passes), two collection areas (A1 = on the track and A2 = off the track) and four replicates. Soil physical parameters and characteristics of the soybean plants were evaluated. Soybean yield on the track did not show significant difference up to 6 passes. It was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max L.; Compaction; Machine traffic. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000726 |
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| Beutler,Amauri Nelson; Centurion,José Frederico; Centurion,Maria Aparecida Pessoa da Cruz; Freddi,Onã da Silva; Sousa Neto,Eurico Lucas de; Leonel,Cristian Luarte; Silva,Álvaro Pires da. |
| Excessive traffic on the soil may affect soybean development. This research was carried out to evaluate soybean root development and grain yield under compacted soil, in an Oxisol. The following traffic treatments were used: T0 = no traffic; T1* = 1 passage of a 4 t tractor; and, T1, T2, T4 and T6, respectively for 1, 2, 4 and 6 passages of an 11 t tractor on the same location, each besides the other. After compaction, soybean [Glycine max cv. MG/BR 46 (Conquista)] was cultivated. The experiment was arranged in a completely randomized design, with six compaction levels and four replicates (plots of 9.0 m²). Undisturbed soil samples were collected in the layers 0.03-0.06, 0.08-0.11, 0.15-0.18 and 0.22-0.25 m, for physical analyses. Root analyses were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Machine traffic; Bulk density; Penetration resistance. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000600008 |
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