Base temperature selection for the prediction of european corn borer instars by the growing degree day method

1984 ◽  
Vol 32 (1) ◽  
pp. 55-60 ◽  
Author(s):  
D.G. Baker ◽  
B.S. Sharratt ◽  
H.C. Chiang ◽  
J.A. Zandlo ◽  
D.L Ruschy
Keyword(s):  
European Corn Borer ◽  
Base Temperature ◽  
Corn Borer ◽  
Temperature Selection ◽  
Degree Day ◽  
Selection For

USE OF STANDARD TEMPERATURE THRESHOLDS AND PHENOLOGICAL PREDICTION FOR THE EUROPEAN CORN BORER (OSTRINIA NUBILALIS HÜBNER) IN ALBERTA

1990 ◽  
Vol 122 (6) ◽  
pp. 1247-1258 ◽  
Author(s):  
Douglas H. Kelker ◽  
Dennis A. Lee ◽  
John R. Spence
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Temporal Distribution ◽  
Sampling Effort ◽  
Degree Days ◽  
Corn Borer ◽  
Degree Day ◽  
Temperature Thresholds ◽  
Southern Alberta ◽  
The Standard Model

AbstractA degree-day model was developed for Alberta populations of Ostrinia nubilalis Hübner. Starting with overwintered fifth-instar larvae, the model calculates the temporal distribution of first- and second-instar larvae which are the stages most vulnerable to chemical suppression. Predictions from three alternative models were compared against field data from southern Alberta. Use of a standard 10°C growth threshold to calculate physiological time scales allowed predictions as accurate as those obtained using either a pooled threshold (11.4°C) calculated specifically from Alberta populations, or a model using two thresholds (12.3°C for fifth-instar larvae to adult and 10.2°C for eggs to second-instar larvae) that incorporated significant differences in growth characteristics observed among life stages. We conclude that standard thresholds are sufficient for degree-day models for northern populations of O. nubilalis. The standard model (t0 = 10°C) predicts that moth emergence will peak at ca. 145 degree-days after median pupation, and that numbers of eggs, and first- and second-instar larvae should peak at 200, 310, and 450 degree-days, respectively. Model predictions can be used to time sampling effort in support of management decisions.

Phytochemical Changes during Recurrent Selection for Resistance to the European Corn Borer

Crop Science ◽  
1997 ◽  
Vol 37 (5) ◽  
pp. 1567-1572 ◽  
Author(s):  
David J. Bergvinson ◽  
John T. Arnason ◽  
Robert I. Hamilton
Keyword(s):  
European Corn Borer ◽  
Recurrent Selection ◽  
Corn Borer ◽  
Selection For
Sign in / Sign up

Export Citation Format

Share Document