Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.11137/2019_3_164_177 http://hdl.handle.net/11449/201242 |
Resumo: | Nematodes are among the most important coffee pathogens, causing significant losses of productivity. The infection of the coffee plant by nematodes can compromise the root system inducing the manifestation of reflex symptoms in its upper part. In addition, nutritional deficiencies may trigger an increase in host predisposition to various other pathogens. Thus, the monitoring of the nutritional levels of plants grown in areas predisposed to the occurrence of nematodes is fundamental. In this study, it was evaluated the potential of empirical models to estimate macro and micronutrient contents in an coffe experimental nematode infested area from a RapidEye multispectral image. For this purpose, laboratory analyzes were performed to determine the contents of macro and micronutrients, as well as the level of nematode infestation, in two experimental plots located in the coffee region of Monte Carmelo (MG). It was verified that the correlation between nutrient content and nematode concentration was higher for the Mg, S, Cu and Mn (correlation coefficients of 0.62, 0.51, 0.71 and 0.75, respectively), while other nutrients had higher correlations with spectral bands or vegetation indices, mainly Ca which had coefficients higher than 0.7 with all indices derived from the spectral bands of red, red edge and near infrared. Empirical models for nutrient estimation were generated from spectral bands and vegetation indices with correlations greater than 0.5. The red edge band, positioned in a spectral region sensitive to variations in vegetation, individually participated in the models to infer the concentrations of the macronutrients Mg and S, besides the micronutrients B, Cu, Fe and Mn, but all calibrated with correlation coefficients below 0,41. The near infrared band was used in the estimation of the N, P and Na contents (R2 equal to 0.25, 0.36 and 0.49, respectively). The NDVI participated in the formulation of the inference model of Ca content and resulted in the highest calibration R2 (0.61), although the validation error was high (13.56%). The choropleth maps of Ca, Mg, Cu, Fe, Mn and Zn spatial distribution had a similar configuration, indicating almost homogeneous and high concentrations of these nutrients in most of the experimental area. The Na and B contents were different in the two plots of the experimental area, while K and S had a more heterogeneous distribution. The maps of N and P reflect well the deficiency of these nutrients in the whole area, mainly in the P content. The empirical models adjusted for the estimation of most of the nutrients were consistent with the condition of excess or deficiency of nutrients in the experimental area. |
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Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye imageMapeamento do conteúdo de nutrientes da cultura cafeeira infectada por nematoides por meio de modelos empíricos derivados de imagens do rapideyeMultispectral image RapidEyeNematodes in the coffee cropNutrient content estimationNematodes are among the most important coffee pathogens, causing significant losses of productivity. The infection of the coffee plant by nematodes can compromise the root system inducing the manifestation of reflex symptoms in its upper part. In addition, nutritional deficiencies may trigger an increase in host predisposition to various other pathogens. Thus, the monitoring of the nutritional levels of plants grown in areas predisposed to the occurrence of nematodes is fundamental. In this study, it was evaluated the potential of empirical models to estimate macro and micronutrient contents in an coffe experimental nematode infested area from a RapidEye multispectral image. For this purpose, laboratory analyzes were performed to determine the contents of macro and micronutrients, as well as the level of nematode infestation, in two experimental plots located in the coffee region of Monte Carmelo (MG). It was verified that the correlation between nutrient content and nematode concentration was higher for the Mg, S, Cu and Mn (correlation coefficients of 0.62, 0.51, 0.71 and 0.75, respectively), while other nutrients had higher correlations with spectral bands or vegetation indices, mainly Ca which had coefficients higher than 0.7 with all indices derived from the spectral bands of red, red edge and near infrared. Empirical models for nutrient estimation were generated from spectral bands and vegetation indices with correlations greater than 0.5. The red edge band, positioned in a spectral region sensitive to variations in vegetation, individually participated in the models to infer the concentrations of the macronutrients Mg and S, besides the micronutrients B, Cu, Fe and Mn, but all calibrated with correlation coefficients below 0,41. The near infrared band was used in the estimation of the N, P and Na contents (R2 equal to 0.25, 0.36 and 0.49, respectively). The NDVI participated in the formulation of the inference model of Ca content and resulted in the highest calibration R2 (0.61), although the validation error was high (13.56%). The choropleth maps of Ca, Mg, Cu, Fe, Mn and Zn spatial distribution had a similar configuration, indicating almost homogeneous and high concentrations of these nutrients in most of the experimental area. The Na and B contents were different in the two plots of the experimental area, while K and S had a more heterogeneous distribution. The maps of N and P reflect well the deficiency of these nutrients in the whole area, mainly in the P content. The empirical models adjusted for the estimation of most of the nutrients were consistent with the condition of excess or deficiency of nutrients in the experimental area.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Universidade Federal de UberlândiaUniversidade Estadual PaulistaUniversidade Federal de Uberlândia – UFU, Rod. LMG 746, km 01, s/n, bloco 1, Campus Monte CarmeloUniversidade Estadual Paulista-UNESP, Rua Roberto Simonsen, 305. Bairro: Centro Caixa Postal 468Universidade Federal de Uberlândia – UFU Instituto de Ciências Agrárias Campus Monte Carmelo, Rod. LMG 746, km 01, s/n, bloco 1, Campus Monte CarmeloUniversidade Estadual Paulista-UNESP, Rua Roberto Simonsen, 305. Bairro: Centro Caixa Postal 468Universidade Federal de Uberlândia (UFU)Universidade Estadual Paulista (Unesp)Martins, George DerocoGalo, Maria de Lourdes Bueno Trindade [UNESP]Vieira, Bruno SérgioJorge, Ricardo Falquetode Almeida, Cinara Xavier2020-12-12T02:27:39Z2020-12-12T02:27:39Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article164-177http://dx.doi.org/10.11137/2019_3_164_177Anuario do Instituto de Geociencias, v. 42, n. 3, p. 164-177, 2019.1982-39080101-9759http://hdl.handle.net/11449/20124210.11137/2019_3_164_1772-s2.0-85073564246Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnuario do Instituto de Geocienciasinfo:eu-repo/semantics/openAccess2024-06-18T15:01:53Zoai:repositorio.unesp.br:11449/201242Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:40:10.746555Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image Mapeamento do conteúdo de nutrientes da cultura cafeeira infectada por nematoides por meio de modelos empíricos derivados de imagens do rapideye |
title |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
spellingShingle |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image Martins, George Deroco Multispectral image RapidEye Nematodes in the coffee crop Nutrient content estimation |
title_short |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
title_full |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
title_fullStr |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
title_full_unstemmed |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
title_sort |
Mapping nutrients content in a nematode-infected coffee plantation by empirical models derived from rapideye image |
author |
Martins, George Deroco |
author_facet |
Martins, George Deroco Galo, Maria de Lourdes Bueno Trindade [UNESP] Vieira, Bruno Sérgio Jorge, Ricardo Falqueto de Almeida, Cinara Xavier |
author_role |
author |
author2 |
Galo, Maria de Lourdes Bueno Trindade [UNESP] Vieira, Bruno Sérgio Jorge, Ricardo Falqueto de Almeida, Cinara Xavier |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal de Uberlândia (UFU) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Martins, George Deroco Galo, Maria de Lourdes Bueno Trindade [UNESP] Vieira, Bruno Sérgio Jorge, Ricardo Falqueto de Almeida, Cinara Xavier |
dc.subject.por.fl_str_mv |
Multispectral image RapidEye Nematodes in the coffee crop Nutrient content estimation |
topic |
Multispectral image RapidEye Nematodes in the coffee crop Nutrient content estimation |
description |
Nematodes are among the most important coffee pathogens, causing significant losses of productivity. The infection of the coffee plant by nematodes can compromise the root system inducing the manifestation of reflex symptoms in its upper part. In addition, nutritional deficiencies may trigger an increase in host predisposition to various other pathogens. Thus, the monitoring of the nutritional levels of plants grown in areas predisposed to the occurrence of nematodes is fundamental. In this study, it was evaluated the potential of empirical models to estimate macro and micronutrient contents in an coffe experimental nematode infested area from a RapidEye multispectral image. For this purpose, laboratory analyzes were performed to determine the contents of macro and micronutrients, as well as the level of nematode infestation, in two experimental plots located in the coffee region of Monte Carmelo (MG). It was verified that the correlation between nutrient content and nematode concentration was higher for the Mg, S, Cu and Mn (correlation coefficients of 0.62, 0.51, 0.71 and 0.75, respectively), while other nutrients had higher correlations with spectral bands or vegetation indices, mainly Ca which had coefficients higher than 0.7 with all indices derived from the spectral bands of red, red edge and near infrared. Empirical models for nutrient estimation were generated from spectral bands and vegetation indices with correlations greater than 0.5. The red edge band, positioned in a spectral region sensitive to variations in vegetation, individually participated in the models to infer the concentrations of the macronutrients Mg and S, besides the micronutrients B, Cu, Fe and Mn, but all calibrated with correlation coefficients below 0,41. The near infrared band was used in the estimation of the N, P and Na contents (R2 equal to 0.25, 0.36 and 0.49, respectively). The NDVI participated in the formulation of the inference model of Ca content and resulted in the highest calibration R2 (0.61), although the validation error was high (13.56%). The choropleth maps of Ca, Mg, Cu, Fe, Mn and Zn spatial distribution had a similar configuration, indicating almost homogeneous and high concentrations of these nutrients in most of the experimental area. The Na and B contents were different in the two plots of the experimental area, while K and S had a more heterogeneous distribution. The maps of N and P reflect well the deficiency of these nutrients in the whole area, mainly in the P content. The empirical models adjusted for the estimation of most of the nutrients were consistent with the condition of excess or deficiency of nutrients in the experimental area. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T02:27:39Z 2020-12-12T02:27:39Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.11137/2019_3_164_177 Anuario do Instituto de Geociencias, v. 42, n. 3, p. 164-177, 2019. 1982-3908 0101-9759 http://hdl.handle.net/11449/201242 10.11137/2019_3_164_177 2-s2.0-85073564246 |
url |
http://dx.doi.org/10.11137/2019_3_164_177 http://hdl.handle.net/11449/201242 |
identifier_str_mv |
Anuario do Instituto de Geociencias, v. 42, n. 3, p. 164-177, 2019. 1982-3908 0101-9759 10.11137/2019_3_164_177 2-s2.0-85073564246 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Anuario do Instituto de Geociencias |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
164-177 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808129448735670272 |