David Owens

I am the field and vegetable crops extension entomologist for University of Delaware, and interested in insecticide resistance and natural enemies

[David Owens @OhBuggers]

even with a relatively dry spring, can find fields dinged up by scm

[David Owens @OhBuggers]

heavy frost, low 32. things id rather not see when the apples and cherries are in full bloom

[David Owens @OhBuggers]

@flanders_tim do you get mole cricket damage to drip lines or some other insect?

[David Owens @OhBuggers]

got alfalfa weevil?

[Luke Macaulay @LukeRangeWalker]

How to use drill and squirt to kill callery pear.

[Luke Macaulay @LukeRangeWalker]

Japanese stiltgrass is one of the worst invasives I see around.

I’ve tried everything over the years. This year, I decided to test three different pre-emergent herbicides.

You can see the plots for yourself in the video.

Initial results from best to worst are:

1) Pendimethalin, brand name Prowl H2O, seems to have the best control at this time.

2) Prodiamine looks to have about 90% control, but I see small pockets of germination.

3) Plateau, brand name imazapic. Least amount of control—does not seem effective at all as a pre-emergent option for Japanese stiltgrass.

[David Owens @OhBuggers]

the war against thr great odorous house ant invasion opened up a new front. ive tried pyrethroids, tetraborate bait, fipronil bait, thiamethoxam bait, indoxacarb bait, bait tabs, spinosad bait pellets, and now: diatomaceous earth. all in the last 2 months. can't get rid of em

[David Owens @OhBuggers]

@flanders_tim not enough worms out there to do it

[David Owens @OhBuggers]

@EthanMidkiff the extension entomologist in me thinks https://t.co/Gd9cTkTmdw

[David Owens @OhBuggers]

hard to believe alfalfa weevil are hatching and yesterday was 87

[DE Dept. of Ag @AgricultureDE]

Did you know? The American holly was named Delaware’s official tree in 1939 when the state was the leading exporter of holly Christmas wreaths. #delaware #agriculture

[David Owens @OhBuggers]

rose rosette disease. took the day off to in part whack these bushes down to the ground

[UD Extension @UDExtension]

🚜 Farm Watch: Soybean Harvest in Delaware! 🌾
In Clayton, Delaware, Legacy Farms—owned and operated by Mark Wilson—is busy harvesting double crop soybeans with three CASE combines. Double cropping allows farmers to grow soybeans after wheat in the same field, making the most of Delaware’s long growing season.

Soybeans are one of Delaware’s top crops, used for animal feed, cooking oil, biodiesel, and even industrial products. This sustainable crop plays a key role in supporting both local farms and the broader agricultural economy.

Footage by Jackie Czachorowski
Brought to you by the University of Delaware Cooperative Extension — keeping you connected to what’s happening on our farms across the First State.

#FarmWatch #DelawareAg #SoybeanHarvest #DelawareFarms #SustainableAg

[UD Extension @UDExtension]

🎥 What is Extension?
Each week, we hear directly from community members—farmers, educators, food service workers, and more—about what the University of Delaware Cooperative Extension means to them. Real voices. Real impact.
#UDExtension #WhatIsExtension

[David Owens @OhBuggers]

digging up drip lines to evaluate insect damage

[David Owens @OhBuggers]

frost!

[David Owens @OhBuggers]

@wright_iv on the bright side, 9ur earworm traps have finally gone wayvdown

[David Owens @OhBuggers]

time to pull lima bean honey!

[David Owens @OhBuggers]

@LynnSosnoskie and tribbleations

[David Owens @OhBuggers]

one of my favorite places to get young trees. its been 6 to 8 seasons with my bare root trees and most are now 10 to 15 ft high. https://t.co/EUvSWggVsF