ANALYTIC DESCRIPTION OF THE SOIL RESISTANCE TO THE PENETRATION

• Autor(a) principal: Borges, Pedro Hurtado de Mendoza
• Data de Publicação: 2013
• Outros Autores: Leite, Hélio Garcia, Fernándes, Haroldo Carlos, Martins, Frederico Cássio Moreira, Hurtado de Mendoza, Zaíra Morais dos Santos
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Engenharia na Agricultura
• Texto Completo: https://periodicos.ufv.br/reveng/article/view/294
• topic: compactación del suelo; modelos no lineares; siembra directa.

Despite the absence of uniform criteria for evaluating soil compaction most authors recommend the soil resistance to the penetration as the main indication. This work aimed to develop statistical models to express the mentioned resistance, depending on the depth and soil moisture by means of experimental data. The soil was classified as yellow ferralitic, under no-tillage in the last five years with maize and beans. It was used an electronic penetrometer of brand PNT 2000. The data were collected in three moisture levels (about 20%, 32% and 40%) with the depth ranging from 0 to 0.60 m. For the data processing it was used softwares CurveExpert 1.4 and STATISTICA 8.0. The most appropriate models were selected according to the coefficient of determination, the deviations between observed and predicted values and the magnitude of the waste. It was concluded that the soil resistance to the penetration can be described analytically by non-linear models and these can be a useful tool to infer soil compaction depending on soil moisture.