Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Revista de Ciências Agrárias (Belém. Online) |
Texto Completo: | https://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461 |
Resumo: | The fall armyworm (Spodoptera frugiperda) causes damage and reduction in maize production and is considered a pest difficult to control, thus determining its spatial distribution pattern contributes to the development of suitable sampling and control strategies. The aim of this study was to evaluate the spatial distribution of Spodoptera frugiperda in maize culture under the conditions of the wasteland of southern Pernambuco state. The experiment was conducted at the Experimental Station of Brejão - ‘Instituto Agronômico do Pernambuco’ (IPA) from April to May 2012. The study area consisted of 100 plots of 60 m2, where 10 plants per plot were weekly sampled at random. In each plant, the number of small and large larvae of S. frugiperda was counted on the leaves and the husk of ears. According to the data observed, the aggregation indices (variance/mean ratio, Morisita’s index, Green’s Index, and Exponential k of a negative binomial distribution) indicated aggregate distribution for both small and large caterpillars, and the negative binomial distribution was the most appropriate model to represent the distribution pattern of small larvae of this pest in the field. In maize crop in the wasteland of southern Pernambuco state, S. frugiperda presents aggregate pattern of distribution and tends to spread from the points of aggregation and colonize form the border into the center of cultures. |
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Revista de Ciências Agrárias (Belém. Online) |
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Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil The fall armyworm (Spodoptera frugiperda) causes damage and reduction in maize production and is considered a pest difficult to control, thus determining its spatial distribution pattern contributes to the development of suitable sampling and control strategies. The aim of this study was to evaluate the spatial distribution of Spodoptera frugiperda in maize culture under the conditions of the wasteland of southern Pernambuco state. The experiment was conducted at the Experimental Station of Brejão - ‘Instituto Agronômico do Pernambuco’ (IPA) from April to May 2012. The study area consisted of 100 plots of 60 m2, where 10 plants per plot were weekly sampled at random. In each plant, the number of small and large larvae of S. frugiperda was counted on the leaves and the husk of ears. According to the data observed, the aggregation indices (variance/mean ratio, Morisita’s index, Green’s Index, and Exponential k of a negative binomial distribution) indicated aggregate distribution for both small and large caterpillars, and the negative binomial distribution was the most appropriate model to represent the distribution pattern of small larvae of this pest in the field. In maize crop in the wasteland of southern Pernambuco state, S. frugiperda presents aggregate pattern of distribution and tends to spread from the points of aggregation and colonize form the border into the center of cultures.Universidade Federal Rural da Amazônia/UFRA2014-07-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 57 No 3 (2014): RCA; 297-304Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 57 n. 3 (2014): RCA; 297-3042177-87601517-591Xreponame:Revista de Ciências Agrárias (Belém. Online)instname:Universidade Federal Rural da Amazônia (UFRA)instacron:UFRAporhttps://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461/507Rios, Élica SantosMartins, Ivan Carlos FernandesNoronha, Mardonio PereiraSilva, José AlexandreSilva Filho, José GomesBadji, César Augusteinfo:eu-repo/semantics/openAccess2017-07-18T18:37:10Zoai:ojs.www.periodicos.ufra.edu.br:article/1461Revistahttps://ajaes.ufra.edu.br/index.php/ajaes/PUBhttps://ajaes.ufra.edu.br/index.php/ajaes/oaiallan.lobato@ufra.edu.br || ajaes.suporte@gmail.com2177-87601517-591Xopendoar:2017-07-18T18:37:10Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA)false |
dc.title.none.fl_str_mv |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
title |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
spellingShingle |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil Rios, Élica Santos |
title_short |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
title_full |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
title_fullStr |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
title_full_unstemmed |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
title_sort |
Spatial distribution of Spodoptera frugiperda in the wasteland of southern Pernambuco state, Brazil |
author |
Rios, Élica Santos |
author_facet |
Rios, Élica Santos Martins, Ivan Carlos Fernandes Noronha, Mardonio Pereira Silva, José Alexandre Silva Filho, José Gomes Badji, César Auguste |
author_role |
author |
author2 |
Martins, Ivan Carlos Fernandes Noronha, Mardonio Pereira Silva, José Alexandre Silva Filho, José Gomes Badji, César Auguste |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Rios, Élica Santos Martins, Ivan Carlos Fernandes Noronha, Mardonio Pereira Silva, José Alexandre Silva Filho, José Gomes Badji, César Auguste |
description |
The fall armyworm (Spodoptera frugiperda) causes damage and reduction in maize production and is considered a pest difficult to control, thus determining its spatial distribution pattern contributes to the development of suitable sampling and control strategies. The aim of this study was to evaluate the spatial distribution of Spodoptera frugiperda in maize culture under the conditions of the wasteland of southern Pernambuco state. The experiment was conducted at the Experimental Station of Brejão - ‘Instituto Agronômico do Pernambuco’ (IPA) from April to May 2012. The study area consisted of 100 plots of 60 m2, where 10 plants per plot were weekly sampled at random. In each plant, the number of small and large larvae of S. frugiperda was counted on the leaves and the husk of ears. According to the data observed, the aggregation indices (variance/mean ratio, Morisita’s index, Green’s Index, and Exponential k of a negative binomial distribution) indicated aggregate distribution for both small and large caterpillars, and the negative binomial distribution was the most appropriate model to represent the distribution pattern of small larvae of this pest in the field. In maize crop in the wasteland of southern Pernambuco state, S. frugiperda presents aggregate pattern of distribution and tends to spread from the points of aggregation and colonize form the border into the center of cultures. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-07-03 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461 |
url |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://ajaes.ufra.edu.br/index.php/ajaes/article/view/1461/507 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
publisher.none.fl_str_mv |
Universidade Federal Rural da Amazônia/UFRA |
dc.source.none.fl_str_mv |
Amazonian Journal of Agricultural Sciences Journal of Agricultural and Environmental Sciences; Vol 57 No 3 (2014): RCA; 297-304 Revista de Ciências Agrárias Amazonian Journal of Agricultural and Environmental Sciences; v. 57 n. 3 (2014): RCA; 297-304 2177-8760 1517-591X reponame:Revista de Ciências Agrárias (Belém. Online) instname:Universidade Federal Rural da Amazônia (UFRA) instacron:UFRA |
instname_str |
Universidade Federal Rural da Amazônia (UFRA) |
instacron_str |
UFRA |
institution |
UFRA |
reponame_str |
Revista de Ciências Agrárias (Belém. Online) |
collection |
Revista de Ciências Agrárias (Belém. Online) |
repository.name.fl_str_mv |
Revista de Ciências Agrárias (Belém. Online) - Universidade Federal Rural da Amazônia (UFRA) |
repository.mail.fl_str_mv |
allan.lobato@ufra.edu.br || ajaes.suporte@gmail.com |
_version_ |
1797231627615600640 |