Precision Agriculture
Mostrando 13-24 de 150 artigos, teses e dissertações.
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13. Precision production environments for sugarcane fields
ABSTRACT: Sugarcane (saccharum spp.) in Brazil is managed on the basis of “production environments”. These “production environments” are used for many purposes, such as variety allocation, application of fertilizers and definition of the planting and harvesting periods. A quality classification is essential to ensure high economic returns. However, t
Sci. agric. (Piracicaba, Braz.). Publicado em: 2019-02
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14. FINANCIAL ANALYSIS OF THE INVESTMENT IN PRECISION AGRICULTURE TECHNIQUES ON COTTON CROP
ABSTRACT: The aim of this study was to evaluate a financial analysis by the use of precision agriculture (PA) techniques on cotton crop. The experiment was carried out in a cotton field of 91 ha and its result compared to another field with similar area, cultivated with the conventional agricultural techniques. The financial analysis was extrapolated to the
Eng. Agríc.. Publicado em: 2017-08
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15. TEMPORAL VARIABILITY IN ACTIVE REFLECTANCE SENSOR-MEASURED NDVI IN SOYBEAN AND WHEAT CROPS
ABSTRACT: Optimization of N management is one of the great challenges to be overcome in grain production, as it is directly related to productivity and can also cause environmental damage. Precision agriculture aims to solve this problem by applying nitrogen fertilizer at varying rates. Reflectance sensors are instruments capable of estimating N needs in var
Eng. Agríc.. Publicado em: 2017-08
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16. USING PASSIVE AND ACTIVE MULTISPECTRAL SENSORS ON THE CORRELATION WITH THE PHENOLOGICAL INDICES OF COTTON
ABSTRACT: The investment in precision agriculture technologies has been growing as well the investment in vegetation index sensors with different types of data collection. This study aimed to evaluate the NDVI potential use obtained from passive and active multispectral sensors as phenological parameters indicator of cotton growth. The experiment was conduct
Eng. Agríc.. Publicado em: 2017-08
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17. DATA MINING FOR THE ASSESSMENT OF MANAGEMENT AREAS IN PRECISION AGRICULTURE
ABSTRACT Precision Agriculture (PA) uses technologies with the aim of increasing productivity and reducing the environmental impact by means of site-specific application of agricultural inputs. In order to make it economically feasible, it is essential to improve the current methodologies as well as proposing new ones, in which data regarding productivity, s
Eng. Agríc.. Publicado em: 2017-02
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18. Identification of commercial blocks of outstanding performance of sugarcane using data mining
ABSTRACT In order to achieve more efficient agricultural production systems, studies relating to the patterns of influence factors on commercial blocks of outstanding performance can be performed to assist management practices. The performance is considered to be the difference between the yield of a given block and the average yield of the homogeneous group
Eng. Agríc.. Publicado em: 2016-10
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19. A non-invasive plant-based probe for continuous monitoring of water stress in real time: a new tool for irrigation scheduling and deeper insight into drought and salinity stress physiology
The non-invasive, magnetic leaf patch clamp pressure probe (also termed ZIM-probe) allows for the first time to measure continuously turgor pressure changes of plant leaves over long periods of time with high precision and in real time. The probe has become an important tool in plant physiology, molecular biology and ecology, but also in agriculture because
Theor. Exp. Plant Physiol.. Publicado em: 2013
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20. Sampling and spatial distribution of Sphenophorus Levis in sugar cane for site specific control / Plano de amostragem e distribuição espacial visando o controle localizado de Sphenophorus Levis na cultura da cana-de-açúcar
No Brasil o bicudo da cana-de-açúcar, (Sphenophorus levis Vaurie) tem se tornado uma praga importante da cultura, podendo causar perdas expressivas na produtividade. Percebe-se que são raros os estudos sobre a distribuição espacial desta praga no campo, e tais estudos são imprescindíveis para o desenvolvimento de planos de amostragem, visando à aplic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/10/2012
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21. Automação de um sistema de pulverização para aplicação de agroquímicos a taxa variada usando injeção direta / Automation of a direct injection sprayer system for variable rate application of agrochemicals
In this work, the automation of a direct injection sprayer system for variable rate application of agrochemicals is presented. The automation of the sprayer system assembled on a laboratory static bench is based on a programmable controller with real time capabilities. Variable rate sprayer with direct injection systems allow multiple agrochemical applicatio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2012
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22. SOLUÇÃO ELETRÔNICA MICROCONTROLADA PARA A DETERMINAÇÃO DA DISTRIBUIÇÃO LONGITUDINAL DE SEMENTES DE MILHO
Atualmente, o processo de determinação da distância longitudinal de sementes em uma mesma linha de semeadura é manual e propenso a falhas. No caso do milho, a distribuição de sementes em distâncias inadequadas diminui a sua produtividade, influenciando o desenvolvimento das plantas, tanto pela estrutura do sistema radicular do milho, que não compensa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/07/2012
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23. Amostragem de solo em agricultura de precisão: particularidades e recomendações / Soil sampling in Precision Agriculture: particularities and recomendations
A agricultura de precisão (AP) depende do gerenciamento da variabilidade dos fatores que influenciam a produtividade agrícola. Seu principal produto de tomada de decisões são mapas que fornecem a variação de parâmetros do solo. Para obter mapas confiáveis há necessidade de coletar grande quantidade de amostras, resultando em custos elevados de aplic
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/04/2012
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24. ComparaÃÃo de trÃs mÃtodos de interpolaÃÃo na construÃÃo de mapas temÃticos / Comparison of three methods of interpolation on thematic maps Drawing
No uso da agricultura de precisÃo (AP), amostras de atributos do solo e planta sÃo coletadas e analisadas visando à obtenÃÃo de informaÃÃes que sirvam como subsÃdio para a tomada de decisÃo, a fim de se corrigirem problemas detectados nas Ãreas analisadas. Para tanto, sÃo utilizados sistemas computacionais capazes de gerar mapas temÃticos, atrav�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/04/2012