Yield Maps
Mostrando 13-24 de 100 artigos, teses e dissertações.
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13. Cacao Crop Management Zones Determination Based on Soil Properties and Crop Yield
ABSTRACT: The use of management zones has ensured yield success for numerous agricultural crops. In spite of this potential, studies applying precision agricultural techniques to cacao plantations are scarce or almost nonexistent. The aim of the present study was to delineate management zones for cacao crop, create maps combining soil physical properties and
Rev. Bras. Ciênc. Solo. Publicado em: 19/12/2016
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14. Correlation maps to assess soybean yield from EVI data in Paraná State, Brazil
ABSTRACT Vegetation indices are widely used to monitor crop development and generally used as input data in models to forecast yield. The first step of this study consisted of using monthly Maximum Value Composites to create correlation maps using Enhanced Vegetation Index (EVI) from Moderate Resolution Imaging Spectroradiometer (MODIS) sensor mounted on Ter
Sci. agric. (Piracicaba, Braz.). Publicado em: 2016-10
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15. AvaliaÃÃo de edidas de influÃncia local em modelos lineares espaciais t-Student / Evaluation of local influence measure in t-student linear spacial models
The system of precision agriculture considers that agricultural areas are not homogeneous, so, fertilizers and agricultural lime must be applied at different rates, according to chemical analyzes and physical properties of soil. The use of geostatistics with precision agriculture allows establishing spatial dependence relations among the sampled points. It i
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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16. InfluÃncia local para modelos geoestatÃsticos utilizando a produtividade da soja e atributos quÃmicos do solo / Local influence on geostatistical models using soy productivity and chemical soil
Soy is one of the main crops in Brazil and in the region of Cascavel / PR, where agricultural production is large, although some factors that affect productivity, monitoring and process management have been diagnosed by geostatistical models for analysis of agricultural data. Studies on the spatial variability of soil attributes associated with soybean yield
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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17. Variabilidade espacial e temporal das propriedades quÃmicas do solo e das folhas, qualidade do fruto e produtividade em pomar de laranja Monte Parnaso
The plant nutritional quality influences directly in juice quality. Therefore it is important the knowledge of its spatial and temporary variation in the orchard for a better application and use of the inputs, larger yield and quality of fruit. This way, input maps can be generated for the best use, providing larger yield and better quality of fruits, reduct
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/02/2012
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18. Determining the viscous behavior of non-Newtonian fluids in a flume using a laminar sheet flow model and Ultrasonic Velocity Profiling (UVP) system
The flow of non-Newtonian fluids in rectangular open channels has received renewed interest over the past number of years especially as large flumes are being used to transport tailings in countries like Chile. The effect of yield stress on the flow behavior is complex and not yet fully understood. The Ultrasonic Velocity Profiling (UVP) technique has been u
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012-09
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19. Soil penetration resistance analysis by multivariate and geostatistical methods
The penetration resistance (PR) is a soil attribute that allows identifies areas with restrictions due to compaction, which results in mechanical impedance for root growth and reduced crop yield. The aim of this study was to characterize the PR of an agricultural soil by geostatistical and multivariate analysis. Sampling was done randomly in 90 points up to
Engenharia Agrícola. Publicado em: 2012-02
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20. Software para definiÃÃo e avaliaÃÃo de unidades de manejo em Agricultura de precisÃo / Software for definition and evaluation of management zones in Precision agriculture
Water and soil conservation is essential for water resources management. Thus, conservationist actions are developed and applied in order to make part of a set of measures which enable the supply management, based on an appropriate recharge of the aquifers as well as the improvement of their quality, from the reduction of erosive processes and volume of effl
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/12/2011
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21. Variabilidade espacial de atributos fÃsicos e quÃmicos de um Latossolo argiloso correlacionados ao rendimento de grÃos da cultura do Crambe (Crambe abyssinica Hochst) / Spatial variability of physical and chemical attributes of a clayey oxisol correlated to grain yield of crop Crambe (Crambe abyssinica Hochst)
O objetivo deste trabalho foi verificar, com auxÃlio de mapas temÃticos obtidos atravÃs da interpolaÃÃo por krigagem, a existÃncia de correlaÃÃo de atributos fÃsicos e quÃmicos com a produtividade da cultura do crambe (Crambe abyssinica Hochst) em Latossolo argiloso sob sistema de plantio direto. Para tanto, conduziu-se a pesquisa em Ãrea experime
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/07/2011
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22. AnÃlise geoestatÃstica de mapas temÃticos da produtividade da soja com diferentes grades amostrais / Geostatistical analysis of thematic maps of soybean yield with differente sampling grids
Com o aumento da produÃÃo agrÃcola mundial, o processo de produÃÃo agrÃcola tornou-se alvo do estudo de diversos pesquisadores. Estudos sobre a variabilidade espacial da produtividade da soja sÃo de grande importÃncia para o desenvolvimento de novas tecnologias, que beneficiam a agricultura. A anÃlise geoestatÃstica torna possÃvel realizar previs�
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011
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23. Atributos quÃmicos e fÃsicos do solo e produtividade de soja em agricultura convencional e de precisÃo / Chemical and physical attributes of soil and crop productivity of soybeans in conventional and precision farming systems
The fundamental principles of precision agriculture are to increase crop productivity and to maintain agricultural sustainability through the use of fertilizer material on a variable rate, unlike the conventional farming, which uses values based on the average use of inputs. The aim of this study was to make a comparison between conventional farming (AC) and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 01/06/2011
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24. Variable rate application of potassium fertilizer for soybean crop growth in a no-till system.
Variable rate application of fertilizer has the potential to improve nutrient use efficiency, improve economic returns, and reduce negative environmental impacts. The objective of this study was to evaluate the variable rate application of potassium fertilizer to soybean crop in a no-till system. The study was conducted on a 13-ha soybean grain field in Cara
INTERNATIONAL CONFERENCE ON PRECISION AGRICULTURE. Publicado em: 2011