Cotton aphid emerges as major pest in SJV cotton

Godfrey, L; Goodell, P; Rosenheim, J

Cotton aphid emerges as major pest in SJV cotton

Authors

Larry D. Godfrey
Peter B. Goodell
Jay A. Rosenheim

Authors Affiliations

P.B. Goodell is IPM Entomologist/Nematologist, UC Kearney Agricultural Center, Parlier.

Publication Information

Hilgardia 54(6):26-29. DOI:10.3733/ca.v054n06p26. November 2000.

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Abstract

During the 1990s, the cotton aphid (Aphis gossypii Glover) escalated from an occasional pest to an annual, severe pest of San Joaquin Valley (SJV) cotton. Although the cotton aphid is not a new insect in the SJV, the change in the bionomics of this pest dictated that new research efforts be directed toward its biology, damage thresholds and management. The 1980s saw major shifts in agronomic practices. For example, the introduction of a plant growth regulator allowed growers to promote vigorous plant growth, rather than limiting growth and yield potential through the practice of water and nitrogen stress. Recent field research has shown that applying high rates of nitrogen to cotton plants increases cotton aphid reproductive rates and can create conditions favorable to aphid outbreaks. The new practice of promoting vigorous growth may have created an optimal host plant environment for cotton aphid reproduction and survival. In addition, the shift to using pyrethroids to control other arthropod pests has enhanced the buildup of cotton aphid populations. The severe aphid outbreak during the 1995 cotton growing season served as a focal point to bring the industry together to discuss the status of cotton integrated pest management and to plan future directions. Results of this effort include increased awareness, greater understanding of cotton aphid biology and improved pest management decisions.

References

Cisneros J, Rosenheim JA. Onto-genetic change of prey preference in the generalist predator Zelus renardii and its influence on predator-predator interactions. Ecological Entomol. 1997. 22:399-407. https://doi.org/10.1046/j.1365-2311.1997.00065.x

Godfrey LD, Fuson KJ, Wood JP, Wright SD. Physiological and yield responses of cotton to mid-season cotton aphid infestations in California. Proceedings Beltwide Cotton Conferences 1997. 51.

Godfrey LD, Keillor K, Hutmacher RB, Cisneros J. Interaction of cotton aphid population dynamics and cotton fertilization regime in California cotton. Proceedings Beltwide Cotton Conferences 1999. 12.

Goodell PB, Grafton-Cardwell EE, Godfrey LD. Maintaining an IPM program in a shifting pest environment. Proceedings Beltwide Cotton Conferences 1997. 8.

Grafton-Cardwell EE. Geographical and temporal variation in response to insecticides in various life stages of Aphis gossypii (Homoptera: Aphididae) infesting cotton in California. J Econ Entomol. 1991. 84:741-9.

Grafton-Cardwell EE, Godfrey LD, Brindley WA, Goodell PB. Status of lygus bug and cotton aphid resistance in the San Joaquin Valley. Proceedings Beltwide Cotton Conferences 1997. 3.

Kidd PW, Rummel DR, Thorvilson HG. Effect of cyhalothrin on field populations of the cotton aphid, Aphis gossypii Glover in the Texas high plains. Southwest Entomol. 1996. 21:293-301.

Rosenheim JA, Wilhoit LR, Colfer RG. Seasonal biology and polymorphism of the cotton aphid, Aphis gossypii in California. Proceedings Beltwide Cotton Conferences 1994. 31.

Rosenheim JA, Wilhoit LR, Goodell PB, et al. Plant compensation, natural biological control, and herbivory by Aphis gossypii on pre-reproductive cotton: The anatomy of a non-pest. Entomologia Experimentalis et Applicata. 1997. 85:45-63. https://doi.org/10.1023/A:1003026507687

Swift JE. Factors influencing the distribution and seasonal abundance of Aphis gossypii. Glover in California. Ph.D. Diss., UC Berkeley 1958. p.175.

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