Population Fluctuation and Vertical Distribution of the Soybean Looper (Chrysodeixis includes) in Soybean Culture - American Journal of Plant Sciences

American Journal of Plant Sciences

Volume 9, Issue 7 (June 2018)

ISSN Print: 2158-2742 ISSN Online: 2158-2750

Google-based Impact Factor: 1.20 Citations h5-index & Ranking

Population Fluctuation and Vertical Distribution of the Soybean Looper (Chrysodeixis includes) in Soybean Culture ()

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DOI: 10.4236/ajps.2018.97113 1,217 Downloads 2,440 Views Citations

Author(s)

Daniele Zulin¹, Crébio J. Ávila², Eunice C. Schlick-Souza³

Affiliation(s)

¹Postgraduate Program in Entomology and Biodiversity Conservation, Universidade Federal da Grande Dourados, Doura-dos-MS, Brazil.
²Embrapa Agropecuária Oeste, Dourados-MS, Brazil.
³Instituto Federal de Mato Grosso, Campo Novo do Parecis-MT, Brazil.

ABSTRACT

The objective of this work was to study the population fluctuation and the vertical distribution of the Chrysodeixis includes (Walker) (Lepidoptera: Noctuidae) in the leaf canopy of soybeans. The experiments were conducted under field conditions in the experimental area of the Embrapa Agropecuária Oeste during the 2014/2015 harvest. Adult monitoring was performed using Delta-type traps, baited with the pest sexual pheromone. The eggs were collected in the soybean plants and the caterpillars monitored through the beat cloth. The population peaks of C. includes occurred in the reproductive period of the soybean plants, although the adults were also found in the season soybean. Although there was no significant relationship between the trapped adults and the immature forms of C. includes sampled with the beat cloth, a significant linear and positive relationship was found between the egg and caterpillar densities of the pest in the culture. Adults preferentially oviposited on the lower part of the soybean plants, while the caterpillars preferred to position themselves predominantly in the lower and mid region of the plants. However, at warmer temperatures during the day, the caterpillars migrate to the upper areas of the soybean plants.

KEYWORDS

Glycine Max, Monitoring, Sexual Pheromone, Behavior

Share and Cite:

Zulin, D. , Ávila, C. and Schlick-Souza, E. (2018) Population Fluctuation and Vertical Distribution of the Soybean Looper (Chrysodeixis includes) in Soybean Culture. American Journal of Plant Sciences, 9, 1544-1556. doi: 10.4236/ajps.2018.97113.

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