Stress conditions in soybean areas based on measurements of soil-plant-atmosphere system and UAV images

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dc.creatorMarley Lamounier Machado
dc.creatorMaria Lélia Rodriguez Simão
dc.creatorFúlvio Rodriguez Simão
dc.creatorRômulo César Soares Alexandrino
dc.date2020
dc.date.accessioned2026-07-07T04:31:49Z
dc.descriptionThe identification of stress conditions in soybean crops is, in most cases, inaccurate, since they may not be noticeable to their full extent if only walking observations are carried out in the crop fields. This study aimed to identify the stress conditions in soybean crops, in three growing environments, in the Minas Gerais state, Brazil, using image processing techniques obtained by UAV, leaf and soil sensors, and climate data. The surveys encompassed two growth stages beginning of blooming (R1) and beginning of seed enlargement (R5) and consisted on UAV flights; mapping of chlorophyll content, soil moisture and soil pH; in addition to climate data. The HSV and yCbCr color models applied to RGB images showed the best Kappa accuracy index for the identification of crop features. The soil pH and moisture (water availability), solar radiation and temperature affected the crop growth and development in the study regions, in the R1 and R5 reproductive stages. However, the soil pH had less influence than the climatic variables. The R5 stage showed a greater vulnerability to stress caused by soil moisture and temperature.
dc.formatapplication/pdf
dc.identifier1517-6398
dc.identifierhttps://www.redalyc.org/articulo.oa?id=253068033034
dc.identifierhttps://www.redalyc.org/journal/2530/253068033034/
dc.identifierhttps://www.redalyc.org/journal/2530/253068033034/html/
dc.identifierhttps://www.redalyc.org/journal/2530/253068033034/253068033034.epub
dc.identifierhttps://www.redalyc.org/journal/2530/253068033034/movil
dc.identifierhttps://doi.org/10.1590/1983-40632020v5061785
dc.identifier.urihttp://hdl.handle.net/123456789/464191
dc.languageen
dc.publisherUniversidade Federal de Goiás
dc.relationhttp://www.redalyc.org/revista.oa?id=2530
dc.rightsPesquisa Agropecuária Tropical
dc.sourcePesquisa Agropecuária Tropical (Brasil) Vol.50
dc.subjectAgrociencias
dc.titleStress conditions in soybean areas based on measurements of soil-plant-atmosphere system and UAV images
dc.typeartículo científico

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Pesquisa Agropecuária Tropical - Universidade Federal de Goiás