Influence of European Corn Borer (Lepidoptera: Pyralidae) Damage to Potato and Foliage Availability on Overwinter Survival of First-Generation Colorado Potato Beetle Adults (Coleoptera: Chrysomelidae) in North Carolina

1996 ◽  
Vol 89 (1) ◽  
pp. 124-130 ◽  
Author(s):  
Brian A. Nault ◽  
Ned M. French ◽  
George G. Kennedy
Keyword(s):  
North Carolina ◽  
Colorado Potato Beetle ◽  
European Corn Borer ◽  
First Generation ◽  
Corn Borer ◽  
Overwinter Survival ◽  
Potato Beetle ◽  
Lepidoptera Pyralidae

Managing Colorado Potato Beetles (Coleoptera: Chrysomelidae) and European Corn Borers (Lepidoptera: Pyralidae) in Potato with Foliar Applications of Bacillus thuringiensis Berliner

2000 ◽  
Vol 35 (4) ◽  
pp. 373-384 ◽  
Author(s):  
Brian A. Nault ◽  
John Speese
Keyword(s):  
Bacillus Thuringiensis ◽  
Colorado Potato Beetle ◽  
European Corn Borer ◽  
First Generation ◽  
Solanum Tuberosum L ◽  
Potato Crop ◽  
Corn Borer ◽  
Corn Borers ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say

Application timing and rate combinations of Bacillus thuringiensis Berliner used for protecting Irish potato, Solanum tuberosum L., from defoliation by the Colorado potato beetle, Leptinotarsa decemlineata (Say), and stem injury by the European corn borer, Ostrinia nubilalis (Hübner), were investigated. Significant reductions in defoliation levels during bloom, populations of first-generation potato beetle adults, and the percentage of stems injured by corn borers at the end of the season in B. thuringiensis-treated potato were considered criteria for a successful management strategy. Although Colorado potato beetle infestations were managed effectively with B. thuringiensis, European corn borer populations were not reduced to a commercially acceptable level. In each of 3 yrs, neither an increase in the number of applications (from 1 to 4) nor an increase in rate (from 0.9 to 3.8 liters/ha) of B. thuringiensis subsp. kurstaki improved the level of corn borer control. In contrast, results indicated that 1 application of B. thuringiensis subsp. tenebrionis, timed when there was >1 large potato beetle larva per stem, using a 4.7 liters/ha rate protected the potato crop during the bloom stage. However, this strategy may not be sufficient to prevent significant levels of defoliation by first-generation potato beetle adults during post-bloom or reduce the size of this population, which will infest next season's crop. For this reason, the B. thuringiensis subsp. tenebrionis timing and rate regimen described above may be most effective in fields where the overwintering potato beetle population is predicted to be low to moderate (e.g., <1 adult per 5 stems), whereas two applications may be most effective in fields where densities are greater.

Estimating the impact of climate change on the occurrence of selected pests at a high spatial resolution: a novel approach

2011 ◽  
Vol 149 (2) ◽  
pp. 185-195 ◽  
Author(s):  
E. KOCMÁNKOVÁ ◽  
M. TRNKA ◽  
J. EITZINGER ◽  
M. DUBROVSKÝ ◽  
P. ŠTĚPÁNEK ◽  
...  
Keyword(s):  
Climate Change ◽  
Colorado Potato Beetle ◽  
European Corn Borer ◽  
Arable Land ◽  
Global Climate Models ◽  
Climate Change Scenarios ◽  
Pest Species ◽  
Corn Borer ◽  
Potato Beetle ◽  
The Impact

SUMMARYThe present study is focused on the potential occurrence of the Colorado potato beetle (Leptinotarsa decemlineata, Say 1824), an important potato pest, and the European corn borer (Ostrinia nubilalis, Hübner 1796), the most important maize pest, during climate change. Estimates of the current potential distribution of both pest species as well as their distribution in the expected climate conditions are based on the CLIMEX model. The study covers central Europe, including Austria, the Czech Republic, Hungary, and parts of Germany, Poland, Romania, Slovakia, Switzerland, Ukraine, Slovenia, the northern parts of Serbia, parts of Croatia and northern Italy. The validated model of the pests’ geographical distribution was applied within the domain of the regional climate model (RCM) ALADIN, at a resolution of 10 km. The weather series that was the input for the CLIMEX model was prepared by a weather generator (WG) which was calibrated with the RCM-simulated weather series (for the period of 1961–90). To generate a weather series for two future time periods (2021–50 and 2071–2100), the WG parameters were modified according to 12 climate change scenarios produced by the pattern scaling method. The standardized scenarios derived from three global climate models (HadCM, NCAR-PCM and ECHAM) were scaled by low, middle and high values of global temperature change estimated by the Model for the Assessment of Greenhouse-gas Induced Climate Change (MAGICC) model (assuming three combinations of climatic sensitivity and emission scenarios). The results of present study suggest the likely widening of the pests’ habitats and an increase in the number of generations per year. According to the HadCM-high scenario, the area of arable land affected by a third generation per season of Colorado potato beetle in 2050 is c. 45% higher, and by a second generation of the European corn borer is nearly 61% higher, compared to present levels.

EFFECTS OF A NATURAL BIVOLTINE STRAIN OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), ON GRAIN CORN YIELDS IN SOUTHWESTERN ONTARIO, 1973–77

1981 ◽  
Vol 113 (7) ◽  
pp. 585-591
Author(s):  
W. H. Foott ◽  
P. R. Timmins
Keyword(s):  
Moisture Content ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Generation ◽  
Second Generation ◽  
Yield Losses ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

AbstractA 5-year study of a bivoltine strain of the European corn borer, Ostrinia nubilalis (Hübner), showed that first-generation moths deposited more eggs on early-planted corn, whereas second-generation moths oviposited more frequently on late-planted corn. The second generation was much larger than the first generation and caused the greater reduction in yield, regardless of whether the yields were based on physiological losses or a combination of physiological losses and dropped ears. It was shown that delay of harvest beyond the time that moisture content of the corn was sufficiently low for machine harvesting could result in severe yield losses from broken stalks and dropped ears during autumn storms.

scholarly journals EUROPEAN CORN BORER AND COLORADO POTATO BEETLE CONTROL ON POTATOES WITH FOLIAR INSECTICIDE TREATMENTS

2001 ◽  
Vol 26 (1) ◽  
Author(s):  
James J. Linduska ◽  
Marylee Ross ◽  
Stephanie Steele ◽  
Barbara Abbott ◽  
Rose Eastman ◽  
...  
Keyword(s):  
Colorado Potato Beetle ◽  
European Corn Borer ◽  
Corn Borer ◽  
Potato Beetle

Response of European corn borer (Ostrinia nubilalis, Hubner) to two potato hybrids selected for resistance to Colorado potato beetle

1997 ◽  
Vol 16 (5) ◽  
pp. 487-490 ◽  
Author(s):  
Mark W. Hanzlik ◽  
George G. Kennedy ◽  
Douglas C. Sanders ◽  
David W. Monks
Keyword(s):  
Colorado Potato Beetle ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Corn Borer ◽  
Potato Beetle
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