Spatial Analysis of Counts of Western Com Rootworm (Coleoptera: Chrysomelidae) Adults on Yellow Sticky Traps in Corn: Geostatistics and Dispersion Indices

Midgarden, David; Youngman, R. R.; Fleischer, Shelby J.

doi:10.1093/ee/22.5.1124

Cited by 60 publications

(61 citation statements)

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“…Moreover, these indices focus on sample count variance and ignore the spatial location of the samples (Liebhold et al, 1993). This property produces certain undesirable effects: the indices sometimes fail to differentiate among different spatial patterns (Midgarden et al, 1993). The distribution patterns of F. occidentalis adults and immatures have been shown to be aggregated based on TPL (Saguero Navas et al, 1994;Cho et al, 1998Cho et al, , 2001).…”

Section: Discussionmentioning

confidence: 99%

Analysis of spatial and temporal associations of adult and immature Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) in cucumber greenhouses

Park

Lee

Shin

et al. 2009

Appl. Entomol. Zool.

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Section: Discussionmentioning

confidence: 99%

Analysis of spatial and temporal associations of adult and immature Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) in cucumber greenhouses

Park

Lee

Shin

et al. 2009

Appl. Entomol. Zool.

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“…As plantas avaliadas localizavamse equidistantemente ao longo e entre as linhas de plantio, de modo a cobrir toda a área plantada e eliminar tendências direcionais (Midgarden et al, 1993).…”

Section: Methodsunclassified

Plano de amostragem do biótipo B de Bemisia tabaci na cultura do pepino

Moura

Picanço

Silva

et al. 2003

Pesq. agropec. bras.

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Resumo -A adoção de programas de manejo integrado de pragas permite reduzir a aplicação de inseticidas e os planos convencionais de amostragem representam o ponto inicial na geração desses programas. Assim, o objetivo deste trabalho foi determinar plano de amostragem convencional para o biótipo B da mosca-branca Bemisia tabaci Genn. (Hemiptera: Aleyrodidae) na cultura do pepino. Foram avaliadas as densidades de ninfas e de adultos em dez lavouras comerciais de pepino, Tocantins, MG, estudando nove sistemas amostrais formados pela combinação de três técnicas (batida de folha em bandeja de plástico branco, contagem direta dos insetos na face inferior da folha e coleta de folha em sacola de plástico) e três unidades amostrais (folha do terço apical, mediano ou basal do espaldeiramento). A contagem direta em folha do terço basal foi o sistema com maior precisão econômica na amostragem de ninfas, mas não possibilitou a geração de plano de amostragem praticável. As batidas, em bandeja, de folha dos terços apicais, medianos ou basais do espaldeiramento foram os sistemas economicamente mais precisos na amostragem de adultos. Desses, apenas a batida de folha do terço mediano em bandeja gerou plano de amostragem praticável, sendo que este plano é composto de 196 amostras/lavoura.Termos para indexação: Cucumis sativus, mosca-branca, ninfa, manejo integrado de praga. Sampling plan for B-biotype of Bemisia tabaci in cucumber cropAbstract -The adoption of pest management integrated programs decreases insecticide applications, and standardized sampling plans represent the initial point in the generation of those programs. This work aimed to determine a conventional sampling plan for B-biotype of the whitefly Bemisia tabaci Genn. (Hemiptera: Aleyrodidae) in cucumber crops. The densities of nymphs and adults were evaluated in ten commercial crops in Tocantins, Minas Gerais State, Brazil. Nine sampling systems compared three sampling techniques, which were the beating of leaf on white plastic trays, the direct counting of insects on abaxial leaf surface, and the leaf collection in plastic bag, and three sample units, a leaf on the apical, median, and basal thirds of the training system. The system with the largest economic precision in the nymphs sampling was the direct counting on leaf of the basal third of the training system. However, that system did not generate a practicable sampling plan. The systems with the largest economic precisions in the adults' sampling were the beating on plastic trays of a leaf from the apical, medium or basal portions of the training system. Only the sampling system of beating leaves of the third medium on plastic trays generated a practicable plan. The number of samples for the adults' sampling on the leaves of the medium portion of the training system was of 196 per field.Index terms: Cucumis sativus, white flies, nymphs, integrated pest management.(1) Aceito para publicação em 23 de outubro de 2003.

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“…Williams et al (1992) demonstrated the aggregated and spatially variable structure of distributions of the soil-dwelling stages of the sugarbeet wireworm, Limonius cali/amicus (Mannerheim). Midgarden et al (1993) applied geostatistical techniques to description of spatially structured, aggregated distributions of counts for corn rootworm adults trapped on sticky boards. Rossi et al (1993) estimated northern corn rootworm densities and evaluated economic risk for treatment decisions on a regional scale by using geostatistical techniques and stochastic simulations of spatial variability applied to data taken from northwestern Iowa.…”

Section: Lag Distancementioning

confidence: 99%

Geostatistical Characterization of the Spatial Distribution of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Emergence

Ellsbury¹,

Woodson²,

Clay³

et al. 1998

Environmental Entomology

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Spatial Analysis of Counts of Western Com Rootworm (Coleoptera: Chrysomelidae) Adults on Yellow Sticky Traps in Corn: Geostatistics and Dispersion Indices

Cited by 60 publications

References 0 publications

Analysis of spatial and temporal associations of adult and immature Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) in cucumber greenhouses

Analysis of spatial and temporal associations of adult and immature Frankliniella occidentalis Pergande (Thysanoptera: Thripidae) in cucumber greenhouses

Plano de amostragem do biótipo B de Bemisia tabaci na cultura do pepino

Geostatistical Characterization of the Spatial Distribution of Adult Corn Rootworm (Coleoptera: Chrysomelidae) Emergence

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