BIOLOGICAL CONTROL OF SPODOPTERA FRUGIPERDA EGGS USING TELENOMUS REMUS NIXON IN MAIZE-BEAN-SQUASH POLYCULTURE

The maize earworm, Spodoptera Frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an important pest in maize. Telenomus remus Nixon (Hymenoptera: Scelionidae) is an important control agent of this pest due to its capacity to invade the whole egg mass. The percentage of parasitism by Telenomus remus...

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Published inAmerican journal of agricultural and biological sciences Vol. 7; no. 3; pp. 285 - 292
Main Authors GutiA©rrez-MartAnez, Antonio, Tolon-Becerra, Alfredo, Lastra-Bravo, Xavier B.
Format Journal Article
LanguageEnglish
Published 2012
Subjects
Hymenoptera
Lepidoptera
Noctuidae
Scelionidae
Spodoptera frugiperda
Telenomus
Zea mays
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Summary:The maize earworm, Spodoptera Frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), is an important pest in maize. Telenomus remus Nixon (Hymenoptera: Scelionidae) is an important control agent of this pest due to its capacity to invade the whole egg mass. The percentage of parasitism by Telenomus remus Nixon (Hymenoptera: Scelionidae) on Spodoptera Frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) eggs was evaluated in maize-bean, maize-squash and maize-bean-squash polyculture and maize monoculture systems. Data were analyzed statistically by using a Poisson regression (log-linear model). The analysis showed highly significant differences in the percentage of parasitism of S. frugiperda eggs by T. remus in plots with jarocho crema maize in polyculture systems (91.00 plus or minus 1.42%) compared to the yellow maize genotype (68.90 plus or minus 3.10%). Parasitism percentages increased in the jarocho crema maize genotype in maize-bean, maize-squash, maize-bean-squash polycultures and maize monoculture by 87.88 plus or minus 3.27%, 89.75 plus or minus 1.99, 99.50 plus or minus 0.19 and 86.88 plus or minus 2.66%, respectively and in the yellow maize genotype they dropped by 70.00 plus or minus 7.05, 64.50 plus or minus 5.63, 77.88 plus or minus 6.51 and 63.25 plus or minus 5.20%, respectively. The percentage of T. remus parasitism on S. frugiperda eggs was found to be affected by the genotype of maize, bean and squash, polyculture system, weeds, densities of the host eggs and numbers and quality of egg masses.
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ISSN:1557-4989
1557-4997
DOI:10.3844/ajabssp.2012.285.292