Definições de zona de manejo para soja de alta produtividade

Umbelino, Anderson da Silva; Oliveira, Danilo Gomes de; Martins, Marcos Paulo de Oliveira; Reis, Elton Fialho dos

doi:10.19084/rca18092

Cited by 4 publications

(2 citation statements)

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“…For example, Table 2 shows higher ECa in the high yield MZ, while lower pH and higher aluminum concentrations are seen in the lower yield MZ. The spatial variability of soil attributes helps in the choice of management alternatives because the crop yield can vary in the same area no matter how small the spatial variability of these attributes may be [28].…”

Section: Management Zones Definitionmentioning

confidence: 99%

Definition of Optimal Maize Seeding Rates Based on the Potential Yield of Management Zones

et al. 2021

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The decision on crop population density should be a function of biotic and abiotic field parameters and optimize the site-specific yield potential, which can be a real challenge for farmers. The objective of this study was to investigate the yield of maize hybrids subjected to variable rate seeding (VRS) and in differentiated management zones (MZs). The experiment was conducted between 2013 and 2015 in a commercial field in the Central-West region of Brazil. First, MZ were delineated using the K-means algorithm with layers involving soil electrical conductivity, yield maps from previous years, and elevation. Seven maize hybrids at five seeding rates were evaluated in the context of each MZ and the cause-and-effect relationship with soil attributes was investigated. Optimal yields were obtained for crop population densities between 70,000 plants ha−1 and 80,000 plants ha−1. Hybrids which perform well under higher densities are key in achieving positive results using VRS. The plant population densities that resulted in maximum yields were obtained for densities at least 27% higher than the recommended seeding rates. The yield variance between MZs can be explained by the variance in soil attributes, while the yield variance within MZs can be explained by the variance in plant population densities. The study shows that on-farm experimentation can be key for obtaining information concerning yield potential. The management by VRS in different MZs is a low-cost technique that can reduce input application costs and optimize yield according to the site-specific potential of the field.

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Section: Management Zones Definitionmentioning

confidence: 99%

Definition of Optimal Maize Seeding Rates Based on the Potential Yield of Management Zones

et al. 2021

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“…O zoneamento agroclimático trata das informações meteorológicas de cada região, as quais determinam a aptidão climática da localização geográfica do cultivo, sendo estas diferentes de área para área. As tomadas de decisão são as ações com base na avaliação das informações disponíveis, portanto, a possibilidade de decidir entre as várias opções alternativas que levam a determinando resultado (Umbelino et al, 2018).…”

Section: Issn:1984-2295unclassified

Uso de tecnologias livres na coleta de dados meteorológicos no campo

Souza

Yari

Bono

et al. 2020

Rev. Bras. Geog. Fis.

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O uso de tecnologia no campo está se tornando muito comum nos países mais desenvolvidos, muito em função da competitividade e eficiência exigidos pelo agronegócio, no entanto, seu uso parece se aplicar mais em grandes propriedades agroepcuárias se distanciando de pequenos agricultores, que ainda não a incorporaram em seu processo produtivo. Teve-se por objetivo no presente trabalho criar um equipamento agrometeorológico portátil e de baixo custo utilizando o Arduino, um conjunto computacional com sensores e componentes para coleta de dados, e o Android, sistema operacional mais utilizado em dispositivos móveis na atualidade. Os resultados das coletas realizadas para o trabalho, em análise comparativa com equipamento profissional de centro meteorológico de uma universidade mostraram confiabilidade dos dados e, portanto, a viabilidade no uso das informações geradas podendo subsidiar tomadas de decisão do pequeno produtor em ações de planejamento. Use of free technologies in the collection of meteorological data in the fieldA B S T R A C TThe use of technology in the field is becoming very common in most developed countries, largely because of the competitiveness and efficiency demanded by agribusiness, however, their use seems to apply more in large agriculture and livestock properties moving away from small farmers, who still They not incorporated in its production process. We had it intended in this work to create a portable agro-meteorological equipment and low cost using the Arduino, a computer set with sensors and components for data collection, and the Android operating system most used on mobile devices today. The results of the samples taken to work in comparative analysis with professional equipment meteorological center of a university showed reliability of the data and therefore the viability of the use of information generated could subsidize taken of the small farmer decision on action planning.Keywords: agribusiness, agro-meteorological, Arduino, Android.

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