1. General Model Information
Name: Northern Corn Rootworm Model of Norango and Sawyer
Main medium: terrestrial
Main subject: biogeochemistry
Type of model: not specified
Keywords: pests, insect, corn rootworm
The Northern Corn Rootworm Model of Norango and Sawyer
(1989) is a process-oriented simulation model that examines the
population dynamics of corn rootworm in the northern United
States. The corn rootworm attacks both the roots and tassels of
corn, decreasing yields. The model examines how planting date
affects the population dynamics of the northern corn rootworm.
The model examines population dynamics using insect phenology equations.
The model requires temperature, beginning insect density, and planting date
of corn as input. The model provides information on the phenology of the
corn plant and the number of insects on the plant in each growth stage.
The model is currently a point model that uses hourly and daily time steps
over a growing season.
Author of the abstract:
II. Technical Information
Operating System(s): DOS
Programming Language(s): PASCAL
III. Mathematical Information
Norango, S.E., and A.J. Sawyer. 1989. A simulation model of northern corn rootworm, Diabrotica barberi,population dynamics, oviposition: significance of host-plant phenology.Can. Ent. 121:169-191.
V. Further information in the World-Wide-Web
VI. Additional remarks
Global change implications: Knowledge about the impact of global change on the population levels and distribution of the corn rootworm is important. Because corn is a high-value cash crop, knowledge of potential economic impacts are important.
Last review of this document by: 30.June 1997
Status of the document:
last modified by
Tobias Gabele Wed Aug 21 21:44:48 CEST 2002