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Manejo por ambiente: atributos de solo e desempenho de cultivares de soja
(Universidade Federal de Santa Maria, 2015-02-16)
The crop productivity mapping is an important precision farming tool enabling more efficient spatial management of agricultural areas. In this sense, the objective of this work was to identify and analyze zones with different ...
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 ...
Modelagem matemática para dosadores de fertilizantes por delineamento composto central rotacional
(Universidade Federal de Santa Maria, 2014-02-07)
The world population growth poses to modern agriculture a number of challenges, one of the main ones is the assurance of the food supply. For this, the rational and appropriate use of fertilizers that can provide increased ...
Desenvolvimento de sensor para quantificação do fluxo de massa de fertilizantes sólidos
(Universidade Federal de Santa Maria, 2020-02-03)
This study assumes that the insertion of sensors capable of instantaneous measurement of the mass flow of fertilizers, after its release by the feeder, can assist in the monitoring of the rates applied in each seeding line, ...
Adubação nitrogenada à taxa variada com o N-Sensor nas culturas do milho e trigo
(Universidade Federal de Santa Maria, 2010-03-03)
Most tropical and subtropical soils present insufficient availability of nitrogen (N) to meet the demand of maize and wheat in order to obtain high yields. The N in plants can be evaluated through the use of sensors of ...
Fertilização nitrogenada à dose variada na cultura do milho
(Universidade Federal de Santa Maria, 2014-02-25)
Maize is the main cereal produced in Brazil, being highly responsive to nitrogen fertilization, since the tropical and subtropical soils presents insufficient availability of nitrogen (N) to attend the culture demand in ...
Atributos físicos do solo e a produtividade de soja e milho em áreas sob tráfego controlado de máquinas agrícolas
(Universidade Federal de Santa Maria, 2014-02-27)
The Soil compaction has been induced in the no-tillage (NT), mainly due to machinery traffic conditions in soils with high humidity. This traffic is essential for crop management, impossible to put out of the field. ...
Variabilidade espacial de atributos do solo e da produtividade da soja e qualidade do solo em sistema de integração lavoura-pecuária
(Universidade Federal de Santa Maria, 2015-02-20)
For the sustainability of integrated crop-livestock systems, the proper management of its components (soil-plant-animal), which are dynamic and interact with each other, are essential to define the system's ability to ...
Fertilização a taxa variável de nitrogênio em trigo integrando sensoriamento de cultura e zonas de manejo na região Sul do Brasil
(Universidade Federal de Santa Maria, 2016-07-25)
There are basically two approaches for variable rate of nitrogen prescription, the first one based on management zones (predictive) and the second one based on remote sensing (reactive). These approaches have complementary ...
Relações entre indicadores de qualidade do solo e a produtividade das culturas em áreas com agricultura de precisão
(Universidade Federal de Santa Maria, 2007-02-16)
The estimative of yield variability is an important tool to soil management decisions and to investigate yield limiting factors. Tools of precision farming as yield mapping and soil sampling using GPS makes possible identify ...