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Note:  This is the last regular edition of the Vegetable IPM Update for the season.  We will provide additional updates on specific pest/disease issues as they arise.

Sweet Corn

Corn earworm (CEW) moth catches remain at moderate levels.  Overall, CEW numbers represent a normal early fall population.  Moth counts will decline with cool night temperatures (especially those forecast for the upcoming weekend), but look for rebounds when nighttime temperatures exceed 60F.   Economically damaging populations of this pest are present throughout the state, and all remaining silk stage plantings are at risk of crop injury if strict spray schedules are not observed.

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Sweet Corn

IPM Program personnel are currently finishing deployment of the black light trap network in New Jersey.  At present, we are approximately 80% operational and have begun to monitor traps.  To date, no corn earworm (CEW) have been captured.  The low numbers of European corn borer (ECB) moths that have been caught do not allow us to produce a map image.  As numbers increase, look for population maps of ECB, CEW and CEW catches from pheromone traps in this weekly publication.  The Vegetable IPM Program is expanding the use of CEW pheromone traps to include central and northern counties this year.  The resulting full-state maps will include interpretive information.

The highest nightly trap catches of ECB for the week ending 5/08/19 are as follows:

Georgetown   1              Woodstown   1

Hillsborough   1

European corn borer egg mass on a pepper leaf.

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Note:  This is the final weekly edition of the Vegetable IPM Update for 2018.  Further updates may be published in response to specific pest threats. 

Sweet Corn

European corn borer (ECB) moth catches remain low.     There will be no map in this edition.   [Read more…]

Sweet Corn

Increasing numbers of European corn borer (ECB) moths have been captured this past week, but still relatively few moths overall.  At present, the highest activity is on the Cumberland-Atlantic border, with minor concentrations in Salem and northern Burlington counties (see ECB map). As early sweet corn plantings progress through whorl and pre-tassel stages, feeding from this pest may be detectable.  Look for the characteristic “shot-hole” type of feeding (photo at right) and consider treating when infested plants exceed 12% in a 50 plant sample.

The highest nightly trap catches of ECB for the week ending 5/30/18 are as follows:

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Sweet Corn

The black light trap network is nearly complete at this time.  To date, no corn earworm (CEW) have been captured.  Increasing numbers of European corn borer (ECB) moths have been captured this past week, although numbers are still quite low.  At present, the highest activity is in portions of northern Burlington and northwestern Ocean counties (see ECB map).  This pest poses little threat at this time, as the earliest sweet corn plants are only just reaching suitable size to support larvae.

The highest nightly trap catches of ECB for the week ending 5/23/18 are as follows:

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Sweet Corn

IPM Program personnel are currently finishing deployment of the black light trap network in New Jersey.  At present, we are approximately 70% operational and have begun to monitor traps.  To date, no corn earworm (CEW) have been captured.  The low numbers of European corn borer (ECB) moths that have been caught do not allow us to produce a map image.  As numbers increase, look for population maps of ECB, CEW and CEW catches from pheromone traps in this weekly publication.

The highest nightly trap catches of ECB for the week ending 5/15/18 are as follows:

Allentown          1              New Egypt          1

Crosswicks          1              Pennington        1

European corn borer egg mass on a pepper leaf.

[Read more…]