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| Santos,Walbert Júnior Reis dos; Curi,Nilton; Silva,Sérgio Henrique Godinho; Araújo,Elias Frank de; Marques,João José. |
| Water retention in soil is used in many agronomic and environmental applications, but its direct measurement is time-consuming and expensive. Therefore, pedotransfer functions (PTFs) are alternatives to obtain this information faster and more economically. The objectives of this study were to generate and validate PTFs to estimate the water content at potentials of -33 kPa (field capacity) and -1500 kPa (permanent wilting point) for different soil classes from the central-south portion of Rio Grande do Sul State. The physical and chemical analyses database from soil surveys of the Celulose Riograndense Corp were used. The database is composed of particle size distribution (coarse and fine sand, silt and clay), soil organic matter, and water content data at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Permanent wilting point; Field capacity; Water retention curve. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100006 |
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| Silva,Bruno Montoani; Silva,Sérgio Henrique Godinho; Oliveira,Geraldo Cesár de; Peters,Petrus Hubertus Caspar Rosa; Santos,Walbert Júnior Reis dos; Curi,Nilton. |
| Digital techniques and tools can assist not only in the prediction of soil properties, such as soil moisture, but also in planning the use and management of areas for agriculture and, or, environmental purposes. In this sense, this work aimed to study wetness indexes methods, defining the spatial resolution and selecting the estimation method that best correlates with water content data measured in the field, evaluating even moisture at different soil depths and seasons. This study was developed in a landscape with strongly undulated relief and covered with Nitosols at the summit and upper middle third, and Argisols at the low middle third, ranging in altitude from 845 to 890 m, located in the southern state of Minas Gerais, Brazil. It were performed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Terrain attributes; Soil water content determination; Relief; Water dynamics. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542014000200005 |
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| Silva,Vladimir Antonio; Curi,Nilton; Marques,João José Granate; Carvalho,Luis Marcelo Tavares de; Santos,Walbert Júnior Reis dos. |
| Lands (broader concept than soils, including all elements of the environment: soils, geology, topography, climate, water resources, flora and fauna, and the effects of anthropogenic activities) of the state of Minas Gerais are in different soil, climate and socio-economics conditions and suitability for the production of agricultural goods is therefore distinct and mapping of agricultural suitability of the state lands is crucial for planning guided sustainability. Geoprocessing uses geographic information treatment techniques and GIS allows to evaluate geographic phenomena and their interrelationships using digital maps. To evaluate the agricultural suitability of state lands, we used soil maps, field knowledge, forest inventories and databases related to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Geoprocessing; Land suitable for agriculture; Sustainability; Multicriteria analysis. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000600007 |
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