Rutgers Cooperative Extension
Sparganothis Fruitworm Degree-Day Update: as of July 07, 2021 Based on our degree-day (DD) model for Sparganothis fruitworm, the window for egg hatch is between 895 and 1,890 DD (see chart). As of July 07, Sparganothis has accumulated 1,251 DD (using April 15 as biofix). This indicates that most eggs should have hatched by now […]
Continue reading...NURSERY PEST SCOUTING GUIDE – JULY (1300-2200 GDD50) Please download and print the pest scouting guide resources (printable version of the information below for your desk or truck) –(click on the link and then print): Nursery Pest Scouting Guide (1300-2200) GDD50 Mid-season Conifer Specific Pest Scouting Guide (600-2200) GDD50 To determine your local growing degree-days, […]
Continue reading...Cucurbit downy mildew has been reported on cucumber (6/16/21) and cantaloupe (6/22/21) in southern New Jersey. There have been no reports of CDM on other cucurbit hosts in the region to date. For more information on CDM and its control please click here. To track the progress of CDM please visit the CDM forecasting website. […]
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Mimosa Webworm (Homadaula anisocentra) = (880-1200 GDD = 1st generation egg hatch): The overwintering pupal cocoons of this non-native caterpillar emerged as adults last June & eggs have been laid on leaflets or small twigs of honeylocust (Gleditisia tricanthos ) trees in NJ. This caterpillar also feeds on mimosa trees, but since honeylocust plantings in […]
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Giant ragweed: Sporadic patches of giant ragweed (Ambrosia trifida) are emerging above the grassline in field edges mostly along ditches and not within field margins. Let your neighbors know if you spot giant ragweed and where as they are not easy to find amongst all the other weeds along ditches. Palmer amaranth: Pigweeds, mostly […]
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Sweet Corn European corn borer (ECB) moth catches have dropped to nearly nothing around the state. Remaining infestations are in pre-tassel stage sweet corn. Whorl is largely un-infested with ECB at this time. ECB population maps will resume if second flight catches rise to high enough numbers. The highest nightly trap catches of ECB for […]
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