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| Müller,Marcelo Marques Lopes; Tormena,Cassio Antônio; Genú,Aline Marques; Kramer,Luiz Fernando Machado; Michalovicz,Leandro; Caires,Eduardo Fávero. |
| Gypsum application may enhance the soil quality for plants in terms of soil chemical and physical properties. The objective of this study was to evaluate the effects of gypsum application on the structural quality of a no-tillage Red Latosol. The experiment was initiated in September 2005 in Guarapuava-PR, with gypsum applications of 0; 4; 8; and 12 Mg ha-1 on the soil surface. In November 2009, two soil blocks were sampled from the 0-0.3 m layer for visual evaluation of the soil structure quality (Sq) and to determine the aggregate-tensile strength (ATS). Soil penetration resistance (PR) and gravimetric moisture (H%) of the 0-0.300 m layer were evaluated, and soil cores were collected (layers 0.000-0.075 and 0.075-0.150 m), to determine soil bulk density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphogypsum; Soil physics; Visual score; Aggregation forces. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300030 |
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