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Registro Completo |
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
23/05/2022 |
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Data da última atualização: |
23/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, L. M. dos; FERRAZ, G. A. e S.; MARIN, D. B.; CARVALHO, M. A. de F.; DIAS, J. E. L.; ALECRIM, A. de O.; SILVA, M. de L. O. e. |
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Afiliação: |
LUANA MENDES DOS SANTOS, UFLA; GABRIEL ARAÚJO E SILVA FERRAZ, UFLA; DIEGO BEDIN MARIN, UFLA; MILENE ALVES DE FIGUEIREDO CARVALHO, CNPCa; JESSICA ELLEN LIMA DIAS, HUNGARIAN UNIVERSITY OF AGRICULTURE AND LIFE SCIENCES; ADEMILSON DE OLIVEIRA ALECRIM, UFLA; MIRIAN DE LOURDES OLIVEIRA E SILVA, UFLA. |
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Título: |
Vegetation indices applied to suborbital multispectral images of healthy coffee and coffee infested with coffee leaf miner. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
AgriEngineering, v. 4, n. 1, p. 311-319, Mar. 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
The coffee leaf miner (Leucoptera coffeella) is a primary pest for coffee plants. The attack of this pest reduces the photosynthetic area of the leaves due to necrosis, causing premature leaf falling, decreasing the yield and the lifespan of the plant. Therefore, this study aims to analyze vegetation indices (VI) from images of healthy coffee leaves and those infested by coffee leaf miner, obtained using a multispectral camera, mainly to differentiate and detect infested areas. The study was conducted in two distinct locations: At a farm, where the camera was coupled to a remotely piloted aircraft (RPA) flying at a 3 m altitude from the soil surface; and the second location, in a greenhouse, where the images were obtained manually at a 0.5 m altitude from the support of the plant vessels, in which only healthy plants were located. For the image processing, arithmetic operations with the spectral bands were calculated using the ?Raster Calculator? obtaining the indices NormNIR, Normalized Difference Vegetation Index (NDVI), Green-Red NDVI (GRNDVI), and Green NDVI (GNDVI), the values of which on average for healthy leaves were: 0.66; 0.64; 0.32, and 0.55 and for infested leaves: 0.53; 0.41; 0.06, and 0.37 respectively. The analysis concluded that healthy leaves presented higher values of VIs when compared to infested leaves. The index GRNDVI was the one that better differentiated infested leaves from the healthy ones. |
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Palavras-Chave: |
Agricultura digital. |
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Thesagro: |
Agricultura de Precisão; Coffea Arábica; Sensoriamento Remoto. |
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Thesaurus Nal: |
Precision agriculture; Remote sensing; Unmanned aerial vehicles. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1143380/1/Vegetation-Indices-Applied-2022.pdf
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Marc: |
LEADER 02324naa a2200277 a 4500
001 2143380
005 2022-05-23
008 2022 bl uuuu u00u1 u #d
100 1 $aSANTOS, L. M. dos
245 $aVegetation indices applied to suborbital multispectral images of healthy coffee and coffee infested with coffee leaf miner.$h[electronic resource]
260 $c2022
520 $aThe coffee leaf miner (Leucoptera coffeella) is a primary pest for coffee plants. The attack of this pest reduces the photosynthetic area of the leaves due to necrosis, causing premature leaf falling, decreasing the yield and the lifespan of the plant. Therefore, this study aims to analyze vegetation indices (VI) from images of healthy coffee leaves and those infested by coffee leaf miner, obtained using a multispectral camera, mainly to differentiate and detect infested areas. The study was conducted in two distinct locations: At a farm, where the camera was coupled to a remotely piloted aircraft (RPA) flying at a 3 m altitude from the soil surface; and the second location, in a greenhouse, where the images were obtained manually at a 0.5 m altitude from the support of the plant vessels, in which only healthy plants were located. For the image processing, arithmetic operations with the spectral bands were calculated using the ?Raster Calculator? obtaining the indices NormNIR, Normalized Difference Vegetation Index (NDVI), Green-Red NDVI (GRNDVI), and Green NDVI (GNDVI), the values of which on average for healthy leaves were: 0.66; 0.64; 0.32, and 0.55 and for infested leaves: 0.53; 0.41; 0.06, and 0.37 respectively. The analysis concluded that healthy leaves presented higher values of VIs when compared to infested leaves. The index GRNDVI was the one that better differentiated infested leaves from the healthy ones.
650 $aPrecision agriculture
650 $aRemote sensing
650 $aUnmanned aerial vehicles
650 $aAgricultura de Precisão
650 $aCoffea Arábica
650 $aSensoriamento Remoto
653 $aAgricultura digital
700 1 $aFERRAZ, G. A. e S.
700 1 $aMARIN, D. B.
700 1 $aCARVALHO, M. A. de F.
700 1 $aDIAS, J. E. L.
700 1 $aALECRIM, A. de O.
700 1 $aSILVA, M. de L. O. e
773 $tAgriEngineering$gv. 4, n. 1, p. 311-319, Mar. 2022.
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Registro original: |
Embrapa Café (CNPCa) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia; Embrapa Cerrados. |
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Data corrente: |
20/02/2020 |
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Data da última atualização: |
28/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
KRAHL, L. L.; PAZ, S. P. A. da; ANGÉLICA, R. S.; VALADARES, L. F.; SOUZA-SILVA, J. C.; MARCHI, G.; MARTINS, E. de S. |
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Afiliação: |
Luise Lottici Krahl, UnB; Simone Patrícia Aranha da Paz, UnB; Rômulo Simões Angélica, UnB; LEONARDO FONSECA VALADARES, CNPAE; JOSE CARLOS SOUSA SILVA, CPAC; GIULIANO MARCHI, CPAC; EDER DE SOUZA MARTINS, CPAC. |
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Título: |
Successive off take of elements by maize grown in pure basalt powder. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
African Journal of Agricultural Research, v. 15, n. 2, p. 229-239, February 2020. |
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DOI: |
https://doi.org/10.5897/AJAR2019.14546 |
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Idioma: |
Inglês |
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Notas: |
Article Number - 9A4418A62913 |
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Conteúdo: |
Abstract: Basalt powder wastes from mining activities have potential to be used as a natural fertilizer. Basalt minerals in agricultural soils may release plant nutrients and increase soil negative charge. In this work, the weathering of basalt promoted by maize rhizosphere was investigated. We studied the chemical and mineralogical composition of basalt, including cation exchange capacity, as well as the rate of elements offtake by maize grown in a pure basalt powder during seven successive growth cycles. A pot experiment was carried out under controlled environmental conditions; plant and rock materials were evaluated at the end of successive growth cycles. X-ray powder diffraction analysis showed diopside and andesine as main minerals of basalt, and smectite. Scanning electron microscopy images evidenced new amorphous components resulting from rhizosphere-induced weathering. The elements K, Ca, Mg, Al, B, Cu, Fe, Mn and Zn were measured in plant tissue, and related to the weathering of basalt minerals. The studied basalt, therefore, provides nutrients to plants and exhibits physicochemical properties, such as cation exchange capacity, especially important for highly weathered soils presenting low cation exchange capacity, such as Oxisols. |
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Palavras-Chave: |
Pó de basalto puro; Resíduo de mineração. |
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Thesagro: |
Aptidão Climática; Cátion; Cultivo Continuo; Disponibilidade de Nutriente; Fertilizante; Milho; Mineração. |
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Thesaurus NAL: |
Basalt; Corn; Ecological succession. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219521/1/Successive-off-take-2020.pdf
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Marc: |
LEADER 02333naa a2200361 a 4500
001 2128508
005 2020-12-28
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.5897/AJAR2019.14546$2DOI
100 1 $aKRAHL, L. L.
245 $aSuccessive off take of elements by maize grown in pure basalt powder.$h[electronic resource]
260 $c2020
500 $aArticle Number - 9A4418A62913
520 $aAbstract: Basalt powder wastes from mining activities have potential to be used as a natural fertilizer. Basalt minerals in agricultural soils may release plant nutrients and increase soil negative charge. In this work, the weathering of basalt promoted by maize rhizosphere was investigated. We studied the chemical and mineralogical composition of basalt, including cation exchange capacity, as well as the rate of elements offtake by maize grown in a pure basalt powder during seven successive growth cycles. A pot experiment was carried out under controlled environmental conditions; plant and rock materials were evaluated at the end of successive growth cycles. X-ray powder diffraction analysis showed diopside and andesine as main minerals of basalt, and smectite. Scanning electron microscopy images evidenced new amorphous components resulting from rhizosphere-induced weathering. The elements K, Ca, Mg, Al, B, Cu, Fe, Mn and Zn were measured in plant tissue, and related to the weathering of basalt minerals. The studied basalt, therefore, provides nutrients to plants and exhibits physicochemical properties, such as cation exchange capacity, especially important for highly weathered soils presenting low cation exchange capacity, such as Oxisols.
650 $aBasalt
650 $aCorn
650 $aEcological succession
650 $aAptidão Climática
650 $aCátion
650 $aCultivo Continuo
650 $aDisponibilidade de Nutriente
650 $aFertilizante
650 $aMilho
650 $aMineração
653 $aPó de basalto puro
653 $aResíduo de mineração
700 1 $aPAZ, S. P. A. da
700 1 $aANGÉLICA, R. S.
700 1 $aVALADARES, L. F.
700 1 $aSOUZA-SILVA, J. C.
700 1 $aMARCHI, G.
700 1 $aMARTINS, E. de S.
773 $tAfrican Journal of Agricultural Research$gv. 15, n. 2, p. 229-239, February 2020.
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Embrapa Agroenergia (CNPAE) |
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