Data/hora: 23/06/2024 18:49:14

Biblioteca(s): | Embrapa Solos.
Data corrente: | 14/02/2022
Data da última atualização: | 24/02/2022
Autoria: | VASQUES, G. de M.; RODRIGUES, H. M.; OLIVEIRA, R. P. de; HERNANI, L. C.; TAVARES, S. R. de L.
Afiliação: | GUSTAVO DE MATTOS VASQUES, CNPS; HUGO MACHADO RODRIGUES, UFRRJ; RONALDO PEREIRA DE OLIVEIRA, CNPS; LUIS CARLOS HERNANI, CNPS; SILVIO ROBERTO DE LUCENA TAVARES, CNPS.
Título: | Management zones from proximal soil sensors capture within-field soil property and terrain variations.
Ano de publicação: | 2022
Fonte/Imprenta: | In: PEDOMETRICS BRAZIL, 2., 2021, Rio de Janeiro. Annals [...]. Rio de Janeiro: Embrapa Solos, 2022. Não paginado. Evento online.
Idioma: | Inglês
Conteúdo: | The objectives are to delineate soil management zones from soil proximal sensor data, and compare soil property values among zones in a 72-ha crop field in southeastern Brazil. Apparent electrical conductivity (aEC) and magnetic susceptibility (aMS), and equivalent Th (eTh) and U (eU) were measured across the field by a Geonics EM38-MK2 and a Medusa MS1200 sensors, respectively. These properties were kriged and used as input for delineating three management zones by fuzzy k-means clustering. Soil properties were measured at 0-10 cm at 72 sites, and their means were compared among the zones. Soil clay, organic C and exchangeable Ca and Mg vary significantly among the zones, according to Brown-Forsythe and Games-Howell tests (p=0.05), while pH, available P and exchangeable K do not. Zone delineation from proximal sensor data constitutes an efficient data-driven approach to separate the field into meaningful parts for soil, irrigation and crop management based on soil variation.
Palavras-Chave: | Gamma radiometrics.
Thesaurus Nal: | Electrical conductivity; Geophysics; Geostatistics; Precision agriculture.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/231294/1/Management-zones-from-proximal-soil-sensors-capture-2022.pdf
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (21003-1) - UPC - AA - DD -  -  -  - DIS