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Research and IPM

Phenology Model Database

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="Corn

Corn Leaf Aphid

Scientific name: Rhopalosiphum maidis

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 1

Elliott, N. C., R. W. Kieckhefer, and D. D. Walgenbach. 1988. Effects of constant and fluctuating temperature on development rates and demographic statistics for the corn leaf aphid (Homoptera: Aphididae). J. Econ. Entomol. 81: 1383-1389.

Location of study: South Dakota (laboratory studies)

Developmental thresholds
Lower:42.9°F (6.1°C)
Upper:79.3°F(26.3°C)

Method of calculation:Double Sine
Cutoff method:Horizontal Cutoff

Degree-day accumulations required for each stage of development ALATAE
Host: BarleyDD (°F)DD (°C)
Apterae  
Preproductive*: 16.08.9
Generation time (birth to adulthood): 162.790.4
   
Preproductive*: 35.219.6
Generation time (birth to adulthood): 189.0105.0

*Period between adult eclosion and onset of reproduction.

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