Modeling Larval Survival and Movement to Evaluate Seed Mixtures of Transgenic Corn for Control of Western Corn Rootworm (Coleoptera: Chrysomelidae)

2006 ◽  
Vol 99 (4) ◽  
pp. 1407-1414 ◽  
Author(s):  
D. W. Onstad
Keyword(s):  
Larval Survival ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Seed Mixtures

Western Corn Rootworm (Coleoptera: Chrysomelidae) Dispersal and Adaptation to Single-Toxin Transgenic Corn Deployed With Block or Blended Refuge

2011 ◽  
Vol 40 (4) ◽  
pp. 964-978 ◽  
Author(s):  
Zaiqi Pan ◽  
David W. Onstad ◽  
Timothy M. Nowatzki ◽  
Bruce H. Stanley ◽  
Lance J. Meinke ◽  
...  
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn

scholarly journals Increased survival of western corn rootworm on transgenic corn within three generations of on-plant greenhouse selection

2008 ◽  
Vol 105 (49) ◽  
pp. 19177-19182 ◽  
Author(s):  
L. N. Meihls ◽  
M. L. Higdon ◽  
B. D. Siegfried ◽  
N. J. Miller ◽  
T. W. Sappington ◽  
...  
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Three Generations

Analysis of the Dynamics of Adaptation to Transgenic Corn and Crop Rotation by Western Corn Rootworm (Coleoptera: Chrysomelidae) Using a Daily Time-Step Model

2005 ◽  
Vol 98 (2) ◽  
pp. 534-551 ◽  
Author(s):  
D. W. Crowder ◽  
D. W. Onstad ◽  
M. E. Gray ◽  
C.M.F. Pierce ◽  
A. G. Hager ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn ◽  
Time Step ◽  
Step Model ◽  
Daily Time Step ◽  
Daily Time

Western Corn Rootworm (Coleoptera: Chrysomelidae) Beetle Emergence from Weedy Cry3Bb1 Rootworm-Resistant Transgenic Corn

2005 ◽  
Vol 98 (5) ◽  
pp. 1679-1684 ◽  
Author(s):  
Isaac O. Oyediran ◽  
Bruce E. Hibbard ◽  
Thomas L. Clark
Keyword(s):  
Western Corn Rootworm ◽  
Corn Rootworm ◽  
Transgenic Corn

Competition of Transgenic Volunteer Corn with Soybean and the Effect on Western Corn Rootworm Emergence

Weed Science ◽  
2012 ◽  
Vol 60 (2) ◽  
pp. 193-198 ◽  
Author(s):  
P. Marquardt ◽  
C. Krupke ◽  
W. G. Johnson
Keyword(s):  
Yield Loss ◽  
Larval Survival ◽  
Western Corn Rootworm ◽  
Growth And Yield ◽  
Corn Rootworm ◽  
Soybean Yield ◽  
Emergence Traps ◽  
Volunteer Corn ◽  
Corn Plants ◽  
The Impact

Glyphosate-resistant (GR) volunteer corn has emerged as a problematic weed in corn:soybean rotational systems, partly because of the rapid increase in adoption of corn hybrids that contain traits for both glyphosate and insect resistance. Volunteer GR corn can decrease soybean yields. The objectives of this study were to quantify the impact of volunteer corn on soybean growth and yield and determine how volunteer corn densities affect western corn rootworm (WCR) emergence. Volunteer corn seed was hand-planted at targeted densities of 0.5, 2, 4, 8, 12, and 16 seeds m−2at soybean planting and 21 d after planting to evaluate both early- and late-emerging cohorts. WCR emergence was assessed with the use of field emergence traps placed over individual corn plants in the 0.5- and 16-plants-m−2plots in 2008 and 2009. In 2010, WCR emergence traps were also placed over individual and clumped volunteer corn plants at densities of two and eight plants m−2. Soybean yield reductions ranged from 10 to 41% where early-emerging volunteer corn densities ranged from 0.5 to 16 plants m−2. No soybean yield loss occurred with the late-emerging cohort of volunteer corn. Twice as many adult WCRs emerged from a single volunteer corn plant growing at densities of 8 and 16 plants m−2, compared with plots containing 0.5 and 2 plants m−2. These results demonstrate that controlling volunteer corn will not only prevent soybean yield loss, but also may reduce the risk of WCR larval survival after exposure to Bt (Bacillus thuringiensisBerliner derived) corn.

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