Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina

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The alfalfa caterpillar, Colias lesbia (Fabricius) (Lepidoptera: Pieridae), is a major pest of alfalfa, Medicago sativa L. (Fabales: Fabaceae), crops in Argentina. Its management is based mainly on chemical control of larvae whenever the larvae exceed the action threshold. To develop and vali-date...

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Autores principales: Serra, Gerardo Víctor, La Porta, Norma Cristina, Avalos, Delia Susana, Mazzuferi, Vilma Encarnación
Formato: article
Lenguaje:Inglés
Publicado: 2022
Materias:
Oruga
Alfalfa
Medicago sativa
Córdoba
Argentina
Acceso en línea:http://hdl.handle.net/11086/25220
https://doi.org/10.1673/031.013.4101
Aporte de:
Repositorio Digital Universitario (UNC) de Universidad Nacional de Córdoba
id I10-R14111086-25220
record_format dspace
institution Universidad Nacional de Córdoba
institution_str I-10
repository_str R-141
collection Repositorio Digital Universitario (UNC)
language Inglés
topic Oruga
Alfalfa
Medicago sativa
Córdoba
Argentina
spellingShingle Oruga
Alfalfa
Medicago sativa
Córdoba
Argentina
Serra, Gerardo Víctor
La Porta, Norma Cristina
Avalos, Delia Susana
Mazzuferi, Vilma Encarnación
Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
topic_facet Oruga
Alfalfa
Medicago sativa
Córdoba
Argentina
description The alfalfa caterpillar, Colias lesbia (Fabricius) (Lepidoptera: Pieridae), is a major pest of alfalfa, Medicago sativa L. (Fabales: Fabaceae), crops in Argentina. Its management is based mainly on chemical control of larvae whenever the larvae exceed the action threshold. To develop and vali-date fixed-precision sequential sampling plans, an intensive sampling programme for C. lesbia eggs was carried out in two alfalfa plots located in the Province of Córdoba, Argentina, from 1999 to 2002. Using Resampling for Validation of Sampling Plans software, 12 additional inde-pendent data sets were used to validate the sequential sampling plan with precision levels of 0.10 and 0.25 (SE/mean), respectively. For a range of mean densities of 0.10 to 8.35 eggs/sample, an average sample size of only 27 and 26 sample units was required to achieve a desired precision level of 0.25 for the sampling plans of Green and Kuno, respectively. As the precision level was increased to 0.10, average sample size increased to 161 and 157 sample units for the sampling plans of Green and Kuno, respectively. We recommend using Green’s sequential sampling plan because it is less sensitive to changes in egg density. These sampling plans are a valuable tool for researchers to study population dynamics and to evaluate integrated pest management strategies.
format article
author Serra, Gerardo Víctor
La Porta, Norma Cristina
Avalos, Delia Susana
Mazzuferi, Vilma Encarnación
author_facet Serra, Gerardo Víctor
La Porta, Norma Cristina
Avalos, Delia Susana
Mazzuferi, Vilma Encarnación
author_sort Serra, Gerardo Víctor
title Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
title_short Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
title_full Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
title_fullStr Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
title_full_unstemmed Fixed-precision sequential sampling plans for estimating alfalfa caterpillar, Colias lesbia, egg density in alfalfa, Medicago sativa, fields in Córdoba, Argentina
title_sort fixed-precision sequential sampling plans for estimating alfalfa caterpillar, colias lesbia, egg density in alfalfa, medicago sativa, fields in córdoba, argentina
publishDate 2022
url http://hdl.handle.net/11086/25220
https://doi.org/10.1673/031.013.4101
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