Distribution of the First-Generation Egg Masses of the European Corn Borer in Corn Fields1

1959 ◽  
Vol 52 (2) ◽  
pp. 295-299 ◽  
Author(s):  
H. C. Chiang ◽  
A. C. Hodson
Keyword(s):  
European Corn Borer ◽  
First Generation ◽  
Corn Borer ◽  
Egg Masses

scholarly journals Insecticide Applied Aerially for Control of First Generation European Corn Borer, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 185-185
Author(s):  
John F. Witkowski
Keyword(s):  
European Corn Borer ◽  
First Generation ◽  
Corn Borer ◽  
Egg Masses ◽  
The Town ◽  
Plot Design

Abstract The cornfield was located in Cedar county, northwest of the town of Hartington, NE. Six black headed egg masses were infested onto 30 marked plants (3, ten plant subsamples) per treatment on 24 Jun. A Cessna 188 Ag Truck was used to make the applications on 30 Jun. Aerial treatments were flown on in a strip plot design. On 9 Aug, all artificially infested plants were dissected from tassel to ground and examined for borer cavities.

scholarly journals Aerial Application of Insecticides for Control of First Generation European Corn Borer, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 234-235
Author(s):  
John Witkowski ◽  
Jerry Echtenkamp
Keyword(s):  
Analysis Of Variance ◽  
European Corn Borer ◽  
First Generation ◽  
Aerial Application ◽  
Corn Borer ◽  
Egg Masses ◽  
Untreated Check ◽  
The Town ◽  
Plot Design

Abstract The cornfield was located in Cedar County, northwest of the town of Hartington, NE. Two treatments and an untreated check were arranged in a strip plot design with one replication. Six black headed egg masses were infested onto 30 marked plants (3, ten plant subsamples) per treatment on 6 Jul. A Cessna 188 Ag Truck was used to make the applications on 13 Jul. On 18 Aug, all artificially infested plants were disected from tassel to ground and examined for corn borer cavities. Data were analyzed using analysis of variance procedures. Treatment means were separated using LSD procedures.

First Generation European Corn Borer Larvicide Trial, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 169-169
Author(s):  
Mike Haas ◽  
Doug Landis
Keyword(s):  
European Corn Borer ◽  
First Generation ◽  
Corn Borer

Stimulation of Oviposition and Heterosis in Interstrain Crosses of European Corn Borer (Lepidoptera: Pyralidae)

1992 ◽  
Vol 27 (3) ◽  
pp. 239-250
Author(s):  
Clifford B. Keil ◽  
Christopher Tipping
Keyword(s):  
Egg Production ◽  
European Corn Borer ◽  
Random Mating ◽  
Daily Basis ◽  
Pupal Weight ◽  
Corn Borer ◽  
Egg Masses ◽  
Lepidoptera Pyralidae ◽  
Mass Mating ◽  
Stimulation Of

Hybrid matings of two Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae) colonies (N and O), established in the laboratory a year apart, demonstrated positive heterosis in the F1 generation as indicated by increases in pupal weight (6%), number of egg masses per female (65%) and number of eggs per female (77%) as compared to intra-colony crosses in mass matings. In contrast, pupation date, an indicator of development time, was intermediate in the hybrids relative to the parental colonies. There was also a 37% increase in the numbers of eggs/female and a 45% increase in egg masses/female in the hybrid parental cross. We investigated this stimulation of oviposition in single female, reciprocal crosses. Oviposition stimulation was directional with the cross of N colony males x O colony females exhibiting significantly higher numbers of total eggs/female and egg masses/female on a daily basis. Colony O females in this cross laid more large egg masses than females in other crosses. Data from individual female crosses demonstrated that egg production in hybrid mass mating experiments was consistent with random mating of males and females from both colonies.

Predicting the Size of European Corn Borer Infestations (Ostrinia nubilalis Hbn.)

1963 ◽  
Vol 95 (12) ◽  
pp. 1285-1292 ◽  
Author(s):  
C. A. Barlow
Keyword(s):  
Regression Analysis ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Generation ◽  
Light Trap ◽  
Predictive Equation ◽  
Partial Regression ◽  
Corn Borer ◽  
Average Rainfall ◽  
Kent County

AbstractA method of forecasting the size of first-generation or summer infestations of Ostrinia nubilalis in Kent County, Ontario, is described. A function is derived from partial regression analysis relating the estimated size of the expected summer infestation to (1) the number of females caught in a light-trap during the first or spring flight, and (2) average rainfall per day during the first flight. The function explains 94% of the observed variation in estimated size of first-generation infestations in this area between 1947 and 1961. A means of categorizing the estimated size of the predicted infestation based on the frequency distribution of previously estimated infestations is also described. Methods of sampling and estimating population size and the applicability of the predictive equation to other environments are discussed.

Estimation of european corn borer egg masses density by sampling of runs

1989 ◽  
Vol 31 (2) ◽  
pp. 289-304
Author(s):  
J. Vaillant ◽  
S. Derridj
Keyword(s):  
European Corn Borer ◽  
Corn Borer ◽  
Egg Masses
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