Agrometeorological Models
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. CROP MODELING WITH LESS DATA: THE FAO MODEL FOR SOYBEAN YIELD ESTIMATION
ABSTRACT Crop growth simulation models such as WOFOST and DSSAT are useful, but require several inputs that sometimes are not available, especially in developing areas. In addition, measured data is usually time and labor-intensive. In search of faster and easier methods for soybean estimates, this study presents a lower input requiring methodology for yield
Eng. Agríc.. Publicado em: 2021-04
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2. Avaliação de modelos agrometeorológicos para estimativa da produtividade na cultura do milho
Resumo: Objetivou-se avaliar modelos agrometeorológicos para estimativa da produtividade na cultura do milho, determinando quais implicações acarretaram as variações de produtividade e o melhor modelo ajustado para as condições avaliadas. Foram utilizadas séries de dados climatológicos referentes a três safras de milho em Chapadão do Sul, MS. O m�
Interações (Campo Grande). Publicado em: 05/12/2019
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3. Agrometeorological analysis of the soybean potentiality in an Amazonian environment
RESUMO O uso de modelos de culturas que integram informações de solo, clima, cultivar e práticas de manejo pode ampliar a compreensão das interações entre o sistema de cultivo da soja e a variabilidade climática local. Objetivou-se analisar a potencialidade da soja em ambiente de produção amazônico, bem como determinar uma janela ótima de semeadur
Pesqui. Agropecu. Trop.. Publicado em: 18/07/2019
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4. NDVI and meteorological data as indicators of the Pampa biome natural grasslands growth
ABSTRACT The present study aimed to characterize the dynamics of NDVI and meteorological conditions, relating both to the annual dynamics of biomass accumulation in natural pastures of the Pampa biome as a way of subsidizing growth modeling. Forage accumulation rate data from a long-term experiment, NDVI data from the MODIS images, and meteorological data me
Bragantia. Publicado em: 23/04/2018
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5. Mapeamento da área cultivada e estimativa do rendimento de grãos de arroz irrigado a partir de modelos agrometeorológicos-espectrais para o Rio Grande do Sul / Crop area mapping and crop rice yields estimation using agrometeorological-spectral models for Rio Grande do Sul state, Brazil
The objective of this study was to characterize the irrigated rice crop at Rio Grande do Sul State and to test a methodology to define the cultivated area and to estimate the grain yield through the adjustment of the agrometeorological-spectral models. The study was developed for the six rice-growing regions of Rio Grande do Sul. Data of the irrigated rice g
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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6. Sugarcane crop efficiency in two growing seasons in São Paulo State, Brazil.
A conceptual framework for crop production efficiency was derived using thermodynamic efficiency concept, in order to generate a tool for performance evaluation of agricultural systems and to quantify the interference of determining factors on this performance. In Thermodynamics, efficiency is the ratio between the output and input of energy. To establish th
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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7. Computational framework to analyze agrometeorological, climate and remote sensing data: challenges and perspectives.
In the past few years, improvements in the data acquisition technology have decreased the time interval of data gathering. Consequently, institutions have stored huge amounts of data such as climate time series and remote sensing images. Computational models to filter, transform, merge and analyze data from many different areas are complex and challenging. T
CONGRESSO DA SOCIEDADE BRASILEIRA DE COMPUTAÇÃO. Publicado em: 2011
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8. Integrating time series mining and fractals to discover patterns and extreme events in climate and remote sensing databases.
This thesis presents new methods based on fractal theory and data mining techniques to support agricultural monitoring in regional scale, specifically regions with sugar cane fields. This commodity greatly contributes to the Brazilian economy since it is a viable alternative to replace fossil fuels. Since climate influences the national agricultural producti
2010.. Publicado em: 2011
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9. Desenvolvimento de um modelo biofísico de crescimento da cana-de-açúcar para estudos globais / A biophysical sugarcane growth model for global studies
Previsões apontam uma expansão das terras cultivadas ao longo das próximas décadas devido a uma combinação do aumento da população global, com consequente necessidade de aumento da produção de alimentos, e do recente crescimento exponencial da produção de biocombustíveis baseados em cultura agrícolas. As alterações resultantes do uso da terra
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/11/2010
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10. Reference evapotranspiration based on air temperature data for the state of Minas Gerais: evaluation of solar radiation estimates based on fuzzy logic / Evapotranspiração de referência com base nos dados de temperatura para Minas Gerais: avaliação da radiação solar baseada em lógica fuzzy
The evapotranspiration (ET), from the agrometeorological point of view, is very important. It indicates the loss of water by vegetation and the surface. It is a fundamental parameter in water management in various sectors of engineering, agronomy, hydrology, etc. Currently, the standard method recommended for estimating the reference evapotranspiration (ETo)
Publicado em: 2009
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11. Mudanças climáticas e a expectativa de seus impactos na cultura da cana-de-açúcar na região de Piracicaba, SP / Climate changes and their expected impacts on the sugarcane crop in the Piracicaba region, state of São Paulo, Brazil
Recent studies show increasingly higher concentrations of greenhouse effect gases in the atmosphere since the Industrial Revolution. The major responsibility for the global warming is attributed to such increase, caused by gases resulting mainly from anthropic activities like burning fossil combustibles and deforestation. Other than temperature, precipitatio
Publicado em: 2008
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12. Utilização de perfis multi-temporais do NDVI/AVHRR no acompanhamento da safra de soja no oeste do Parana / Use of NDVI/AVHRR time-series profiles for soybean crop monitoring in the west of Parana, Brazil
Crop yield forecasting systems are important sources of information for helping Governrnent and private institutions in agricultural trade matters. The traditional methods of crop yield forecasting norma1ly do not provide precise estimations, due to its subjectivity. The use of Geothecnology has been studied for the development of more efficient crop yield f
Publicado em: 2007