Distribution of European Corn Borer (Lepidoptera: Pyralidae) Egg Masses and Larvae on Sweet Corn in New York

1986 ◽  
Vol 15 (3) ◽  
pp. 501-506 ◽  
Author(s):  
A. M. Shelton ◽  
J. P. Nyrop ◽  
A. Seaman ◽  
R. E. Foster
Keyword(s):  
New York ◽  
European Corn Borer ◽  
Sweet Corn ◽  
Corn Borer ◽  
Egg Masses ◽  
Lepidoptera Pyralidae

Treatment Thresholds for European Corn Borer (Lepidoptera: Pyralidae) Infestations in Early-Season Fresh Market Sweet Corn

1998 ◽  
Vol 33 (4) ◽  
pp. 393-399 ◽  
Author(s):  
Dale I. M. Riggs ◽  
Michael P. Hoffmann ◽  
Larry C. Thetford
Keyword(s):  
New York ◽  
European Corn Borer ◽  
Sweet Corn ◽  
Fresh Market ◽  
Marketable Yield ◽  
Corn Borer ◽  
Air Blast ◽  
Early Season ◽  
Treatment Thresholds ◽  
Lepidoptera Pyralidae

We examined the effect of varying thresholds for treatment of first generation European corn borer, Ostrinia nubilalis (Hübner), infestations in early-season fresh market sweet corn in eastern New York over a 3-year period. Seven treatment thresholds were compared: (1) 15% infested plants at whorl stage, 5% infested plants at tassel and silk stage, (2) 15% at whorl stage, 15% at tassel and silk stage, (3) 30% at whorl stage, 5% at tassel and silk stage, (4) 30% at whorl stage, 15% at tassel and silk, (5) 5% at tassel and silk stage, (6) 15% at tassel and silk stage, and (7) control (untreated). When thresholds were reached, permethrin was applied using an air-blast sprayer. Results indicated little difference in percentage marketable ears whether plants were treated or not at whorl stage, and the tassel stage threshold could be raised to 15% infested plants with no significant effect on percentage marketable ears. We found no difference in marketable yield among plots treated from one side or both sides with an air-blast sprayer.

DOSE–MORTALITY RESPONSE OF EUROPEAN CORN BORER (LEPIDOPTERA: PYRALIDAE) THIRD-INSTAR LARVAE TO SELECTED INSECTICIDES

1993 ◽  
Vol 125 (6) ◽  
pp. 1137-1139 ◽  
Author(s):  
William D. Hutchison
Keyword(s):  
United States ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Sweet Corn ◽  
Corn Borer ◽  
Mortality Response ◽  
Ca 50 ◽  
Lepidoptera Pyralidae ◽  
Economic Pest ◽  
Insecticide Control

The European corn borer, Ostrinia nubilalis Hübner, continues to be a consistent economic pest of field and sweet corn (Zea mays L.) in the upper midwestem United States. In Minnesota alone, O. nubilalis control costs and losses to sweet corn (ca. 50 630 ha) exceed $5,000,000 annually (Noetzel et al. 1985). Despite recent efforts to implement alternatives (Lewis and Bing 1991; Prokrym et al. 1992; Bartels and Hutchison 1993; Bolin et al. 1993), insecticide control continues to play a central role in O. nubilalis management programs.

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.

Effect of Bacillus thuringiensis Application Interval on European Corn Borer (Lepidoptera: Pyralidae) Control in Sweet Corn

1995 ◽  
Vol 30 (3) ◽  
pp. 374-389 ◽  
Author(s):  
David W. Bartels ◽  
William D. Hutchison ◽  
Vincent A. Fritz ◽  
George R. Klacan
Keyword(s):  
Bacillus Thuringiensis ◽  
European Corn Borer ◽  
Sweet Corn ◽  
Natural Populations ◽  
Corn Borer ◽  
First Instar ◽  
Additional Control ◽  
Dependent Variables ◽  
Lepidoptera Pyralidae ◽  
Low Rate

Ground-applied treatments of two commercial Bacillus thuringiensis subsp. kurstaki formulations (MVP and Dipel ES) and tank-mixes with a pyrethroid (Ambush 2E) were evaluated for control of European corn borer, Ostrinia nubilalis (Hübner), larvae in sweet corn. Treatments were applied at average intervals of 3.4, 5, 7, and 10 days to determine field persistence. Manual infestations of first-instar O. nubilalis were used to augment natural populations. During both years, there were no significant interactions between application interval and treatment for all dependent variables tested, including late instars per ear, percent marketability, yield, and predator density. Regardless of application interval, MVP provided greater larval control than Dipel ES. However, the decline in efficacy of the encapsulated MVP formulation occurred at the same rate as that of the non-encapsulated Dipel ES formulation over the 3.4 to 10-d intervals. Tank-mixes of B. thuringiensis + low-rate permethrin provided no additional control compared with low-rate permethrin alone. Given the infestation levels present in this test, neither B. thuringiensis formulation provided control sufficient to maintain current processor standards of 5–10% infested ears at harvest.

Effect of Weed Abundance on European Corn Borer (Lepidoptera: Pyralidae) Infestation of Sweet Corn

1990 ◽  
Vol 19 (6) ◽  
pp. 1858-1865 ◽  
Author(s):  
Donald C. Weber ◽  
Francis X. Mangan ◽  
David N. Ferro ◽  
Herbert V. Marsh
Keyword(s):  
European Corn Borer ◽  
Sweet Corn ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

Sex pheromone of the european corn borer,Ostrinia nubilalis (Lepidoptera: Pyralidae), in New York

1975 ◽  
Vol 1 (2) ◽  
pp. 225-231 ◽  
Author(s):  
J. Kochansky ◽  
R. T. Card� ◽  
J. Liebherr ◽  
W. L. Roelofs
Keyword(s):  
New York ◽  
Sex Pheromone ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Corn Borer ◽  
Lepidoptera Pyralidae

scholarly journals A study on percentages of damage ratios of the European corn borer (ECB), Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae) on sweet corn cultivars

2017 ◽  
Vol 4 (2) ◽  
pp. 1
Author(s):  
Nihat Demirel ◽  
Ömer Konuşkan
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Sweet Corn ◽  
First Year ◽  
Corn Borer ◽  
Important Pest ◽  
Lepidoptera Pyralidae ◽  
Second Year

The European corn borer (ECB), Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae) is one of the most important pest of grain corn and sweet corn in Turkey. The objective of this study was to assess percentage damage ratios of the ECB on stalk and corncobs of various sweet corn varieties in Reyhanlı district of Hatay province of Turkey.  The studies were carried out in 2015-2016 with four different sweet corn varieties including Caremelo, Vega, Merit and Batem. After two years of the study, the ECB larvae caused significant damages on stalk and corncobs of all sweet corn varieties.  The percentage damage of stalk and corncobs varied for each of the sweet corn varieties in both years.  In the first year, the highest percentages of stalk damage ratios were recorded on Batem (32.45), followed by Vega (19.85), Merit (17.07) and Caremelo (16.72).  In the second year,  the highest percentages of stalk damage ratios were observed on Merit (59.34),  followed by Caremelo (51.65),  Batem (45.09) and Vega (35.49).  In the first year, the largest percentages of corncobs damage ratios were recorded on Vega (25.73), followed by Batem (16.74), Caremelo (12.11), and Merit (9.30). In the second year,  the highest percentages of corncobs damage ratios were observed on Caremelo (14.31), followed by Merit (13.72), Batem (9.98) and Vega (8.93).  In conclusion, the largest percentages of stalk + corncobs damages ratios were observed on Batem (49.19), followed by Vega (45.58), Caremelo (28.83) and Merit (26.37) in 2015, while the highest percentages of stalk + corncobs damages ratios were recorded on Merit (73.06), followed by Caremelo (65.96), Batem (55.07) and Vega (44.42) in 2016.

EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE), ON WHEAT

1980 ◽  
Vol 112 (8) ◽  
pp. 861-863 ◽  
Author(s):  
Harold R. Willson
Keyword(s):  
New York ◽  
Winter Wheat ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Herbaceous Plant ◽  
Corn Borer ◽  
Economic Significance ◽  
Lepidoptera Pyralidae ◽  
Growing Region

The European corn borer, Ostrinia nubilalis Hübner, is known to attack nearly every herbaceous plant large enough for the larvae to enter. Although the borer is primarily considered a pest of corn, economic infestations in such New York crops as potatoes, gladiolus, and other large stem plants are not uncommon.In 1977, 1978, and 1979, economic levels of borer infestations were observed in winter wheat. In 1977, the presence of borer in wheat was noted at a number of sites, but only a few cases could be considered economically significant. However, in the 1978 season, the presence of borer in wheat had become common and reports of economic infestations exceeding 5 or 10% were widespread in the western New York wheat growing region. In 1979, the problem of borer on wheat declined significantly, and of infestations located, only one could be considered of economic significance.

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