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Research and IPMPhenology Model Database
Pink BollwormScientific name: Pectinophora gossypiella Phenology models predict timing of events in an organism's development. For many organisms which cannot internally regulate their own temperature, development is dependent on temperatures to which they are exposed in the environment. Information in this database comes from published articles. It may be used in conjunction with field monitoring and a degree-day calculator.Note: Before using a model that was not field tested in your location, you should test the model for one or more seasons under your conditions to verify that it will work for you. Model 1 of 6Beasley, C.A., and C.J. Adams. 1996. Field-based, degree-day model for pink bollworm (Lepidoptera: Gelechiidae) development. J. Econ. Entomol. 89:881-890. Location of study: Palo Verde Valley, California (field studies) Developmental thresholds
Degree-day accumulations required for each stage of development Biofix: February 1
Model 2 of 6Naranjo, S. E., and J. M. Martin. 1993. Comparative development, reproduction, and oviposition of pink bollworm (Lepidoptera: Gelechiidae) on a resistant okra-leaf cotton and commercial upland and pima cultivars. J. Econ. Entomol. 86: 1094-1103. Location of study: Phoenix, Arizona (field studies) Developmental threshold
Degree-day accumulations required for each stage of development
Model 3 of 6Pink Bollworm. IN: Integrated Pest Management for Cotton in the Western United States. University of California Statewide IPM Project. University of Arizona Statewide IPM Project. New Mexico State University. U.C. Div. Agr. Sci. Publ. #3305. Location of study: California and Arizona Developmental thresholds
Method of calculation: Huber's method Degree-day accumulations required for each stage of development Start date: January 1
Model 4 of 6Pink Bollworm. IN: Integrated Pest Management for Cotton in the Western United States. University of California Statewide IPM Project. University of Arizona Statewide IPM Project. New Mexico State University. U.C. Div. Agr. Sci. Publ. #3305. Developmental threshold
Method of calculation: not specified (UC IPM recommends Single Sine) Degree-day accumulations required for each stage of development Start date: January 1
Model 5 of 6Sevacherian, V., N. C. Toscano, R. A. Van Steenwyk, R. K. Sharma, and R. R. Sanders. 1977. Forecasting pink bollworm emergence by thermal summation. Environ. Entomol. 6: 545-546. SEE ALSO: Pink Bollworm. IN: Integrated Pest Management for Cotton in the Western United States. University of California Statewide IPM Project. University of Arizona Statewide IPM Project. New Mexico State University. U.C. Div. Agr. Sci. Publ. #3305.Location of study: Imperial Valley, California (field studies) Developmental threshold
Method of calculation: Double Triangle Degree-day accumulations required for each stage of development Start date: January 1
Model 6 of 6Clavijo Albertos, S. 1974. Studies on diapause induction and development of the pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelichiidae), under controlled conditions. Ph.D. thesis, Entomology, University of California, Riverside. 76 p. Location of study: Riverside, California (laboratory studies) Developmental threshold
Method of calculation: not specified (UC IPM recommends Single Sine) Degree-day accumulations required for each stage of development
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