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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
22/02/2022 |
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Data da última atualização: |
24/02/2022 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
VASQUES, G. de M.; RODRIGUES, H. M.; TAVARES, S. R. de L.; HERNANI, L. C.; OLIVEIRA, R. P. de. |
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Afiliação: |
GUSTAVO DE MATTOS VASQUES, CNPS; HUGO MACHADO RODRIGUES, UFRRJ; SILVIO ROBERTO DE LUCENA TAVARES, CNPS; LUIS CARLOS HERNANI, CNPS; RONALDO PEREIRA DE OLIVEIRA, CNPS. |
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Título: |
An optimized sample for assessing soil property variations across the field and within management zones efficiently. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: PEDOMETRICS BRAZIL, 2., 2021, Rio de Janeiro. Annals [...]. Rio de Janeiro: Embrapa Solos, 2022. Não paginado. Evento online. |
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Idioma: |
Inglês |
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Conteúdo: |
An optimized sampling design to assess soil property variation across the field and within management zones is proposed and validated in a 72-ha crop field in southeastern Brazil. An optimized sample (18 sites) was derived by spatial simulated annealing from proximal sensor covariates. Soil properties were measured at 0-10 cm and validated against those measured at 72 sites on a regular grid. The optimized and regular grid samples had equal global spatial trend models and means for soil clay, pH and exchangeable Ca, Mg and K, and different ones for organic C and available P. Within zones, equal means between sampling designs were found for all soil properties in the ?North? zone, and for most properties in the other two zones. Soil property correlations against proximal sensor variables were honored by the optimized samples in most cases, both globally and within zones. The optimized soil sample reduces costs while keeping most soil information for guiding management decisions. |
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Palavras-Chave: |
Proximal soil sensing; Spatial simulated annealing; Spatial trends. |
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Thesagro: |
Agricultura de Precisão; Sensoriamento Remoto. |
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Thesaurus Nal: |
Precision agriculture; Remote sensing. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/231718/1/An-optimized-sample-for-assessing-soil-property-variations-2022.pdf
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Marc: |
LEADER 01870nam a2200241 a 4500
001 2140307
005 2022-02-24
008 2022 bl uuuu u00u1 u #d
100 1 $aVASQUES, G. de M.
245 $aAn optimized sample for assessing soil property variations across the field and within management zones efficiently.$h[electronic resource]
260 $aIn: PEDOMETRICS BRAZIL, 2., 2021, Rio de Janeiro. Annals [...]. Rio de Janeiro: Embrapa Solos, 2022. Não paginado. Evento online.$c2022
520 $aAn optimized sampling design to assess soil property variation across the field and within management zones is proposed and validated in a 72-ha crop field in southeastern Brazil. An optimized sample (18 sites) was derived by spatial simulated annealing from proximal sensor covariates. Soil properties were measured at 0-10 cm and validated against those measured at 72 sites on a regular grid. The optimized and regular grid samples had equal global spatial trend models and means for soil clay, pH and exchangeable Ca, Mg and K, and different ones for organic C and available P. Within zones, equal means between sampling designs were found for all soil properties in the ?North? zone, and for most properties in the other two zones. Soil property correlations against proximal sensor variables were honored by the optimized samples in most cases, both globally and within zones. The optimized soil sample reduces costs while keeping most soil information for guiding management decisions.
650 $aPrecision agriculture
650 $aRemote sensing
650 $aAgricultura de Precisão
650 $aSensoriamento Remoto
653 $aProximal soil sensing
653 $aSpatial simulated annealing
653 $aSpatial trends
700 1 $aRODRIGUES, H. M.
700 1 $aTAVARES, S. R. de L.
700 1 $aHERNANI, L. C.
700 1 $aOLIVEIRA, R. P. de
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Registro original: |
Embrapa Solos (CNPS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
25/03/2011 |
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Data da última atualização: |
05/06/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
NOVELLI, V. M.; FREITAS-ASTUA, J.; RIBEIRO, B. M.; LOCALI-FABRIS, E. C.; NAVIA, D.; KITAJIMA, E. W.; MACHADO, M. A. |
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Afiliação: |
Valdenice Moreira Novelli, CCSM-IAC; JULIANA DE FREITAS ASTUA, CNPMF; Bergmann Morais Ribeiro, UFT; Eliane Cristina Locali-Fabris, CCSM-IAC; DENISE NAVIA MAGALHAES FERREIRA, CENARGEN; Elliot Watanabe Kitajima, NAP/MEPA, ESALQ/USP; Marco Antonio Machado, CCSM-IAC. |
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Título: |
Prevalence of the Cardinium symbiont and genetic variability of Brevipalpus phoenicis (Acari: Tenuipalpidae) populations from Brazil. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In:INTERNATIONAL CONGRESS OF ACAROLOGY, 13., 2010, Recife. Abstracts book... Recife: CNPq: FACEPE: Banco do Nordeste: TWAS, 2010. p. 181-182. |
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Idioma: |
Português |
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Notas: |
Abstract 335 |
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Conteúdo: |
The presence of Cardinium symbiont has been reported and is associated with feminization in Brevipalpus mites and alterations of the reproduction of several other arthropod hosts. We report the prevalence of this endosymbiont and genetic variability of B. phoenicis populations from different plant hosts and geographic regions of Brazil. The presence of bacteria was confirmed by PCR amplification and transmission electron microscopy, and their variability was evaluated by analysis of the 16S rDNA and gyrB gene region. For B. phoenicis variability, we evaluated mitochondrial COI sequences. High similarity was observed between Cardinium from different mite populations, and interestingly, although the symbiont has been associated with the haploid thelytoky, two mite populations were naturally aposymbiotic. |
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Palavras-Chave: |
Cardinium symbiont. |
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Thesagro: |
Ácaro. |
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Thesaurus NAL: |
Brevipalpus. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01626nam a2200229 a 4500
001 1883109
005 2023-06-05
008 2010 bl uuuu u00u1 u #d
100 1 $aNOVELLI, V. M.
245 $aPrevalence of the Cardinium symbiont and genetic variability of Brevipalpus phoenicis (Acari$bTenuipalpidae) populations from Brazil.$h[electronic resource]
260 $aIn:INTERNATIONAL CONGRESS OF ACAROLOGY, 13., 2010, Recife. Abstracts book... Recife: CNPq: FACEPE: Banco do Nordeste: TWAS, 2010. p. 181-182.$c2010
500 $aAbstract 335
520 $aThe presence of Cardinium symbiont has been reported and is associated with feminization in Brevipalpus mites and alterations of the reproduction of several other arthropod hosts. We report the prevalence of this endosymbiont and genetic variability of B. phoenicis populations from different plant hosts and geographic regions of Brazil. The presence of bacteria was confirmed by PCR amplification and transmission electron microscopy, and their variability was evaluated by analysis of the 16S rDNA and gyrB gene region. For B. phoenicis variability, we evaluated mitochondrial COI sequences. High similarity was observed between Cardinium from different mite populations, and interestingly, although the symbiont has been associated with the haploid thelytoky, two mite populations were naturally aposymbiotic.
650 $aBrevipalpus
650 $aÁcaro
653 $aCardinium symbiont
700 1 $aFREITAS-ASTUA, J.
700 1 $aRIBEIRO, B. M.
700 1 $aLOCALI-FABRIS, E. C.
700 1 $aNAVIA, D.
700 1 $aKITAJIMA, E. W.
700 1 $aMACHADO, M. A.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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