Análise espacial da mosca-negra em sistema agroflorestal de citros

Silva, Anderson Gonçalves da; Farias, Paulo Roberto Silva; Júnior, Arlindo Leal Boiça; Lima, Bruno Gonçaves; Ponte, Nara Helena Tavares da; Pinho, Raphael Coelho; Barbosa, Ronny Sobreira

doi:10.14295/cs.v6i3.408

Cited by 3 publications

(2 citation statements)

References 18 publications

(4 reference statements)

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“…However, the semivariance for the year 2012 remained constant throughout the sampling distances (Figure 3A). As for the adjustment's efficiency, the Gaussian model obtained an R 2 = 0.67; this figure indicates a good adjustment based on Silva et al (2015). The number of adult live wire bugs collected in 2013 had a range of 29.45 m. This parameter represents the limit of dependence on the sampled points.…”

Section: Resultsmentioning

confidence: 83%

Spatial Distribution of Tibraca limbativentris (Heteroptera: Pentatomidae) in Babassou Palms

Costa¹,

Lemos²,

Machado³

et al. 2022

JAS

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The babassou plant (Attalea speciosa Mart. Ex. Spreng, Arecaceae) is an important palm tree in the state of Maranhão, northeastern Brazil. This plant is the main arboreal component in extensive geographical areas including agricultural areas. However, limited research studies exist on its role as an alternative pest host in this region. This study investigated the occurrence of Tibraca limbativentris Stal (1860) in young babassou palm trees, the effect of abiotic factors (temperature, solar radiation and rainfall) on the number of T. limbativentris adults and postures, and this insect’s spatial arrangement during the rice crop off-season. The research team inspected young babassou plants on a monthly basis in 2012 and 2013 to collect and quantify postures and adults. They collected a total of 1418 live adults, 13 dead and ten postures of T. limbativentris. There was a significant difference between the first and the other collections of live adults carried out in 2012 and 2013. Abiotic factors including rainfall, temperature and solar radiation, had no influence on the number of adults (alive and dead) and postures. The semivariogram adjusted to the Gaussian model showed that in 2013, the spatial distribution of living adults, that had an aggregate pattern, was highly dependent on the season. However, in 2012 there was a pure nugget effect. These results imply that young babassou plants are alternative T. limbativentris hosts.

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Section: Resultsmentioning

confidence: 83%

Spatial Distribution of Tibraca limbativentris (Heteroptera: Pentatomidae) in Babassou Palms

Costa¹,

Lemos²,

Machado³

et al. 2022

JAS

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show abstract

“…From the semivariogram, maps are elaborated to show how space (time/space) of the insect occurs in the area, through the incorporation of geostatistical procedures based on spatial modeling techniques by semivariograms and estimation by kriging. These tools are important for the elaboration of safe methods of sampling and, especially, localized control of the pest (Silva et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal distribution of Opsiphanes invirae (Lepidoptera: Nymphalidae) in oil palm, Pará State, Brazil

Brandão

Farias

Tinôco

et al. 2017

Agraria

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In this work, we evaluated the spatial and temporal distribution of Opsiphanes invirae larvae (Lepidoptera: Nymphalidae) in oil palm plantations in the state of Pará, where 14 samplings were accomplished from April 2008 to August 2014. The experimental area consisted of 3,582 ha splitted into 89 subareas from 50 to 80 ha each. The spatial distribution was determined by sampling the number of larvae in 10% of the plants (sample unit) in each subarea, in which were obtained the variable value (number of larvae / plant) and coordinates (latitude and longitude). The variability and spatial dependence analysis were made through the incorporation of geostatistical procedures based on spatial modeling techniques by semivariograms. The krigagem maps were generated from the O. invirae larvae's count data in the field. The O. invirae spatial distribution is aggregated with spatial dependence described by the spherical model, forming patches of 990 to 3700 m (range of the model). Initially, the infestation occurs at the planting edges, with subsequent spread to the entire area. O. invirae larvae disperse by passing from one plant to another, infesting all the area. The results suggest that the traps are placed at the edges of the planting aiming thecollection of adults and, hence, control the population of larvae.

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Distribuição espacial de Praelongorthezia praelonga em cultivo de citros em áreas de sistemas agroflorestal e convencional na Amazônia oriental

Gouvêa

Farias

Santos

et al. 2020

RSD

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O estudo da distribuição espacial é importante para elaboração de planos de ajuda no monitoramento, prevenção e controle de pragas em áreas de cultivos agrícolas. Os objetivos científicos destacam as vantagens da avaliação da distribuição espacial de pragas, incluindo a utilização da geoestatística como fundamental ajuda para análise e elaboração do plano de manejo integrado. Para a cochonilha de placas Praelongorthezia praelonga foram conduzidos ensaios em duas áreas comerciais de cultivo em citros, uma de 58.240 m2 do tipo agroflorestal e outra de 49.280 m2 do tipo convencional, ambas localizadas em Capitão Poço, PA. As coletas foram realizadas no período de setembro de 2008 a agosto de 2009 em todas as plantas do talhão, avaliando-se a ocorrência de ninfas e/ou adultos vivos de P. praelonga. Realizou-se avaliações mensais observando a presença ou a ausência da praga nos dois sistemas de cultivo. As áreas foram georreferenciadas e foi realizada a análise espacial através de modelos de semivariogramas e interpolação dos mapas de krigagem. O modelo de melhor ajuste aos dados foi o exponencial, com alcances variando entre 3,8 a 5,8 m para o sistema convencional e 3,3 a 7,3 m para o sistema agroflorestal. Os mapas de krigagem mostraram a distribuição espacial da praga nas áreas estudadas, indicando forte agregação em ambos os sistemas com Índice de Dependência Espacial (IDE) com valores entre 0 a 0,605 variando de forte e moderado para todas as avaliações nas áreas de cultivo.

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Análise espacial da mosca-negra em sistema agroflorestal de citros

Cited by 3 publications

References 18 publications

Spatial Distribution of Tibraca limbativentris (Heteroptera: Pentatomidae) in Babassou Palms

Spatial Distribution of Tibraca limbativentris (Heteroptera: Pentatomidae) in Babassou Palms

Spatial and temporal distribution of Opsiphanes invirae (Lepidoptera: Nymphalidae) in oil palm, Pará State, Brazil

Distribuição espacial de Praelongorthezia praelonga em cultivo de citros em áreas de sistemas agroflorestal e convencional na Amazônia oriental

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