Search Results for: corn borer

Sweet Corn

European corn borer (ECB) adult activity is now very low. Only scattered individuals remain in northern NJ, while the activity in the southwestern part of the state has declined to nearly nothing. The first flight is over in most of NJ. Areas of highest activity is in parts of Morris County (see ECB map). ECB infestations are still present in sweet corn plantings. Feeding in pretassle stage plantings in the 30% range has been found in areas where IPM personnel are operating.

Be sure to begin monitoring plantings for ECB feeding while they are still in the whorl stage. Consider treating when the number of infested plants in a 50 plant sample exceeds 12%. Feeding in the whorl stage will appear as numerous small holes (called “shot-hole”) on leaves, with damage present on consecutively younger leaves.
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Sweet Corn

Warmer evening temperatures have resulted in a slight resurgence of European corn borer (ECB) adults in the blacklight network. A residual first generation population remains in northern NJ, while the activity in the southwestern part of the state may represent the beginning of a second flight. The nature of the southern NJ activity should become clear over the next 1-2 weeks. Areas of highest activity include parts of Morris and Gloucester counties (see ECB map). ECB infestations continue to rise in sweet corn plantings. Feeding ranges from single digits to over 50% in areas where IPM personnel are operating.
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Sweet Corn

Catches of European corn borer (ECB) are now in decline through much of the state. Remaining areas of highest activity include parts of Morris and Warren counties (see ECB map).

ECB infestations are now rising in sweet corn plantings. Feeding ranges from single digits to 12% in areas where IPM personnel are operating.

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Sweet Corn

Cold temperatures and rain this week have prevented catches of European corn borer (ECB) from rising, and much of the activity represented in the map occurred over the weekend. Areas of highest activity include parts of Hunterdon, Morris and Burlington counties (see ECB map). Low level ECB infestations are present in early sweet corn plantings, and will become more significant with the return of drier weather.
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Sweet Corn

European corn borer (ECB) adults are being captured with increasing frequency now. Areas of highest activity now include parts of Hunterdon and Morris counties (see ECB map). Within the past 3 days, IPM personnel have found low level ECB infestations in some of the earliest sweet corn plantings. At present, reports of feeding are from Ocean and Somerset counties, however it is likely that feeding is occurring in many early plantings to the south.
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