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Desempenho de diferentes arranjos amostrais e modelos na espacialização de cátions trocáveis do solo
(Universidade Federal de Santa Maria, 2021-04-16)
Soil sampling for the mapping of its properties can be performed by a variety of arrangements with different levels of complexity. Considering the importance of exchangeable soil cations for crops, it is necessary to ...
Residualidade e reaplicação de corretivo da acidez, associada ou não ao gesso, em Latossolo no Cerrado: alterações nos atributos químicos do solo no perfil e baixo impacto na produtividade da soja e do milho
(Universidade Federal de Santa Maria, 2021-01-29)
Soil reacidification is a slow process and starts from the surface. In soils under a no-tillage (NT) system the reacidification can be controlled by reapplying lime on the surface provided that the soil native potential ...
Métodos de amostragem para a modelagem espacial de fósforo disponível no solo
(Universidade Federal de Santa Maria, 2021-03-30)
Sampling represents a crucial step for digital soil mapping because it directly
interferes with the operational costs of the project and in the following steps of
data processing, up to the quality of the generated map. ...
Decomposição de resíduos culturais de plantas de cobertura, emissão de gases do efeito estufa e produtividade do arroz e soja em terras baixas
(Universidade Federal de Santa Maria, 2021-02-26)
Growing grasses and legumes as cover crops in autumn / winter is an uncommon practice in lowlands, especially regarding the use mixture between this species. The objective of this study was to evaluate whether the mixture ...
Estratificação dos teores de potássio no solo de lavouras sob sistema plantio direto
(Universidade Federal de Santa Maria, 2021-08-24)
Potassium (K) is an essential macronutrient and its application in agricultural soils is required
due to the high export rate by crops. Within this context, agricultural systems seek greater
operational yield from ...
Estratégias de manejo de solo para transição agroecológica em horticultura
(Universidade Federal de Santa Maria, 2021-10-13)
Agroecology is a scientific field that guides sustainable practice of agriculture, which is a process of conversion from traditional to more sustainable practices based on adoption of conservation management techniques and ...
Propriedades reológicas na detecção do caráter coeso em solos
(Universidade Federal de Santa Maria, 2021-03-05)
The cohesive character has been evaluated primarily in the field, where a pedologist is capable
to recognize it rather easily. However, there is a problem of subjectivity and lack of metrics for
characterization, so ...
Residualidade da forma e do modo de aplicação de calcário sobre atributos químicos do solo e de culturas
(Universidade Federal de Santa Maria, 2021-06-18)
A soil considered to be of good quality should allow for root growth without restrictions regarding chemical, physical and biological attributes and provide a greater volume of explored soil. The no-tillage system must ...
Escoamento superficial de água em um argissolo com plantas de cobertura sob chuva natural
(Universidade Federal de Santa Maria, 2021-10-27)
The human activities have caused a great negative impact on the surface runoff of water in the soil. Aiming to minimize these effects, the cover crops started to exercise an important position on soil management. However, ...
Uso de covariáveis ambientais na predição da variação espacial do teor de fósforo disponível em área agrícola do Sul do Brasil
(Universidade Federal de Santa Maria, 2021-09-28)
The demand for more accurate maps of soil attributes in agriculture have been increasing over years, especially aiming a more rational use of phosphorus fertilizer which can lead to serious environmental damage, like ...