Stink Bug Season

October 3, 2011 under CANR News, Cooperative Extension

Pull up the welcome mat; they’re back. It’s early fall in Delaware, which means pumpkins on the vine, apples on the trees and stink bugs in the house.

“Last year, I got a flood of calls about stink bugs during the last week of September,” said Brian Kunkel, an entomologist with the University of Delaware’s Cooperative Extension. “Sure enough, this past week, Extension has been hearing from homeowners trying to get rid of stink bugs.”

“As the days grow shorter and the evening temperatures cooler, Delawareans are discovering these uninvited houseguests in their garages, porches and decks, as well as inside the house,” Kunkel said. “The brown marmorated stink bug becomes a nuisance pest when it heads inside to find overwintering sites.”

While merely an annoyance to most homeowners, the brown marmorated stink bug (BMSB) poses an economic threat to Delaware agriculture. Fruit crops seem to be at greatest risk, especially peaches and apples. About 18 percent of the mid-Atlantic apple crop had stink bug damage last year, according to the U.S. Apple Association.

“West Virginia apple orchards experienced significant crop loss last season because of the BMSB,” Kunkel said. “Here at UD, we’re doing everything we can to make sure that we don’t see the kind of crop loss that West Virginia had.”

Several of Kunkel’s colleagues in Extension and UD’s College of Agriculture and Nature Resources are researching BSMBs in soybean, lima bean, sweet corn, field corn and sweet pepper fields.

Two of the most active researchers are Joanne Whalen, the Extension’s integrated pest management specialist, and Bill Cissel, an Extension associate who is investigating stink bugs as part of his graduate studies.

Cissel and Whalen, assisted by two interns, are examining stink bugs in conditions similar to home yards and gardens, too. In UD’s Garden for the Community, a one-third-acre plot on the Newark campus, the duo surveyed stink bug nymphs, adults and egg masses on plants commonly grown in home gardens — tomatoes, zucchini, yellow squash, cucumbers, eggplant, sunflowers and bell peppers. Plus, they’re studying a plot of ornamental plants to see which plants stink bugs use as hosts.

Rutgers University, Virginia Tech, the University of Maryland and the Delaware Soybean Board are some of the partners on one or more of these projects.

Although Delaware has several native stink bugs, BMSBs originates in Asia and were accidentally introduced to the United States. First collected in Allentown, Pa., in 1998, BMSBs have been spreading across the eastern half of the U.S. ever since.

Kunkel said spiders and birds have been known to eat BMSBs (he’s heard reports of house cats eating them, too) but the pest has no recognized natural predator here.

The USDA Beneficial Insects Introduction Research Lab, housed on UD’s campus, is investigating biocontrol measures. Biocontrol introduces natural predators into an environment to control, if not eradicate, the pest problem. But the rigorous research process and government approvals needed for biocontrol measures can take years, even decades.

Delaware’s farmers are asking for help now. So the focus of Whalen and Cissel’s research is on monitoring to determine when to control stink bugs, as well as which insecticides provide the best control.

Field observations in 2010 indicated that stink bug infestations usually start on the perimeters of fields, Cissel noted. “We’re studying whether perimeter applications of insecticides will prevent stink bugs from penetrating the interior parts of soybean fields,” he said.

“In our corn research, we are trying to determine how much damage stink bugs are causing and when the plant is most sensitive to damage — is it when it’s silking, during grain fill or closer to harvest?”

Insect research projects typically run for two to three seasons, and most of the UD studies are in their first year. So it’s too early to discuss preliminary results, Cissel said, especially since the BMSBs weren’t as active this summer as previously.

“We had a really large outbreak last year,” Kunkel said, “but we’re not seeing those kinds of numbers this year.”

Tell that to Kathy Fichter, a resident of Chadds Ford, Pa.

“It’s just as bad as last year and it’s only the beginning of stink bug season here,” said Fichter, who always has a tissue at hand, ready to scoop up stink bugs. “My two sons won’t go near them, and these are boys who like bugs,” she said.

“Our neighborhood seems to be a ‘vacation destination’ for stink bugs. They come here by the hundreds, maybe even thousands,” she added. “My neighbors are in the same predicament. Yet, a few miles away, they aren’t such a nuisance.”

Kunkel isn’t surprised by Fichter’s stink bug woes, even though regional conditions are generally better. “Stink bug outbreaks — and insect outbreaks in general — tend to be localized,” he said. “We often hear of one neighborhood getting slammed while another neighborhood a half-mile away will have very few bugs.”

If the BMSB already has arrived at your house — or you want to make sure it doesn’t — take control measures now. The best thing you can do, Kunkel said, is to seal all cracks around windows, doors, siding, utility pipes and chimneys. Often overlooked, he said, are the cracks that can appear around dryer vents and gaps around window air-conditioning units.

“Try to look on the bright side,” Kunkel said. “Stink bugs that get inside are helping you to winterize your house. Wherever they got in today is where the cold winter winds will, later this year.”

Article by Margo McDonough

This post also appears on UDaily.

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An apple a day

September 22, 2011 under CANR News, Cooperative Extension

As Hurricane Irene approached Delaware, those of us who weren’t ordered to evacuate searched for ice, gas and batteries, and secured lawn furniture and trash cans. But at Highland Orchards in North Wilmington, there wasn’t time for anything but harvesting.

“It was all hands on deck – the goal was to pick apples, peaches and everything else that was ripe or near ripe before the storm blew through,” recalls orchard co-owner Ruth Linton. Her 10-year-old daughter, Katya, picked apples while her 82-year-old mother, Elaine Linton, cut flowers that are sold in the orchard’s retail shop.

For several days straight, the Lintons and their employees labored to save the early apple harvest and, for the most part, were successful. But they couldn’t do a thing but about the mid-season varieties, which weren’t ready to pick.

Those apples – galas, ginger golds and Paula reds – blew right off the trees. A few tree limbs came down, too, but not many, thanks to Linton’s pruning work last spring. “Pruning out smaller limbs protects from wind damage because it gives the larger limbs more room to sway,” she says.

Like many Delawareans, Linton lost power during the storm; in her case for three days. That meant no cold storage for all those just picked apples. Fortunately, she was able to rent a refrigerated truck but it took hours to move the apples from cold storage to the truck and eventually back to cold storage.

Today you’ll find an ample supply of apples at Highland’s shop, just not as many varieties as usual.

“Normally, we have about 10 varieties of apples in early September but we only had three varieties earlier this month,” says Linton. “Currently, we’re offering 10 to 12 varieties; usually we have 15 to 20 varieties in mid-September.”

Linton says that late-season varieties weren’t impacted by the hurricane because, at that point, those apples were small so they weren’t blown off the trees. As long as rainy conditions don’t persist she says the late-season crop should be good.

“It’s been a crazy weather year,” says Linton. “First it was wet, then very dry and then very wet.”

But the family has seen worse. “From ’33 to ’34 during the Great Depression we had total crop failure. There was a drought the first two years and then a hurricane knocked down all the trees,” she says.

“So, 2011 is not the worst weather we’ve ever seen, it’s just the worst in the last 75 years.”

Fifer Orchards, outside the town of Wyoming, fared a bit better than Highland. “We were very fortunate that we were able to harvest what was ready before the hurricane and that most of the apples remaining on the trees were fine,” says Mary Fifer Fennemore, a co-owner of Fifer’s. “We did have some fruit on trees get knocked around and bruised, and some apples ended up on the orchard floor. A few peach trees were blown over but all the apple trees remain standing. We really got lucky; the forecast had predicted a lot more wind.”

Despite hurricane hassles, Fifer Fennemore says that the 2011 apple season is going strong. But, if you have a favorite variety, don’t delay your trip to Fifer’s or to your favorite farm stand or farmers’ market. “The crop is running about 10 days early because of the summer heat,” she says.

The dwarf trees in Fifer’s U-Pick orchard are in particularly good shape and abundant with fruit now. U-Pick is only open on Fridays and Saturdays; when it re-opens this Friday, Fuji and Mutsu varieties should be available for picking and possibly Stayman. U-Pick began operations several years ago to expand on the orchard’s successful Fall Fest and other agri-tourism activities. Fall Fest, which starts tomorrow and runs through Oct. 29, features corn mazes, pumpkin painting and other seasonal fun.

But don’t let the tricycle and rubber ducky races fool you. Fifer Orchards is a working apple orchard, one of only two large commercial apple growers in Delaware. The other, T&S Smith, is located in Bridgeville. (In addition, there are a few smaller orchards that sell wholesale. Highland only sells direct to the consumer via its farm store.)

Even with just a handful of orchards, apples are Delaware’s most important fruit crop. More than 10.4 million pounds are grown here annually, according to Gordon Johnson, a fruit and vegetable specialist with University of Delaware Cooperative Extension. Peaches, the No. 2 crop, trail behind at around 1.2 million pounds. A large part of the state’s apple crop is sent to processors to be turned into everything from cider to applesauce.

Fortunately, there are plenty of Delaware apples set aside for the fresh market. Look for local apples in area grocery stores and at farm stands and farmers’ markets. Go to the Delaware Department of Agriculture’s website, and click on farmers’ markets or on-the-farm-markets to find one near you.

Article by Margo McDonough

Photo by Danielle Quigley

Also available online on UDaily

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Where the wildflowers are

September 22, 2011 under CANR News, Cooperative Extension

Spring blooms may have their legions of fans but Sue Barton unabashedly favors the flowers of fall.

“Fall is, by far, the more interesting time in Delaware’s landscape,” says Barton, noting the juxtaposition of flowers, grasses, foliage and fruit in shades of yellow, red, orange, blue, purple, white and more.  Barton, the ornamental horticulture specialist for University of Delaware Cooperative Extension, points out that the ever-changing colors make for a new and different landscape every week.

The autumnal equinox is Sept. 23 and the fall wildflower season already is shaping up to be a beauty.

“The fall wildflowers actually start around the end of August, are in abundance now, and continue through Thanksgiving, when the late-blooming asters put on final show of color,” says Barton.

Native wildflowers currently in bloom include goldenrod, tickseed, ironweed, goldentop, ladies’-tresses, some species of coneflower and asters.

One of the best places to see fall wildflowers is Mt. Cuba Center. Along the woodland paths and in the meadow you’ll find white wood aster, purple dome New England aster, golden fleece autumn goldenrod, fireworks wrinkle-leaf goldenrod, blue-stemmed goldenrod and showy goldenrod.

Other fall highlights include black-eyed Susan and two varieties of Joe-Pye weed, (Eupatorium maculatum ‘Gateway’) and (Eupatorium dubium ‘Little Joe’), according to Jeanne Frett, horticultural research manager of Mt. Cuba.

Plus, goldentop is abundant in the center’s meadow and ladies’-tresses dots the woods. One of Frett’s favorite fall wildflowers is Chelone, commonly known as turtlehead because the flowers are shaped a bit like a turtle’s head. The species that Frett prefers sports hot pink flowers and grows throughout Mt. Cuba’s woods.  She also likes Gentiana clausa,aka bottle gentian, which features vivid purple-blue flowers.

Winterthur Museum’s gardens also are a good place to check out colorful native wildflowers. The museum’s Quarry Garden woodlands feature asters and alumroot. Barton says that this woodland is a great place to observe the way that nature creates patterns in the landscape, such as the drifts of blooms often found under trees.

“For those plants that are dependent on distribution by birds, you’ll find a lot more plants directly under the trees or near the trees,” says Barton. “The birds distribute fewer seeds the further you get away from their nests.”

Barton enjoys looking for patterns — both natural and human-made — in the landscape. “There’s often an element of surprise, you wonder why a particular species is abundant in one spot and not another, and then you realize that the conditions are different in terms of moisture or sunlight or some other factor,” notes Barton.

“I like change in the garden and in the landscape,” she adds. “Natural patterns in the landscape provide that element of change, and so, too, do the varying colors of fall’s flowers, grasses, foliage and fruit.”

Mt. Cuba and Winterthur both offer wildflower walks. Events at Mt. Cuba include “Autumnal Wildflower Garden” tours through Oct. 2. For tour days and more information, go to www.mtcubacenter.org or call 302-239-4244.

At Winterthur, “Wednesday Garden Walks” are held each week; wildflowers can be seen on the Oct. 5 walk, titled “The Purple and Red of Sycamore Hill,” and on the Oct. 12 “Harvest-Time Hike.” For more information, go to www.winterthur.org or call 302-888-4600.

Article by Margo McDonough

Photo courtesy Mt. Cuba

Also online on UDaily 

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Call of the Blue Hen

September 15, 2011 under CANR News

Channel 6 Action News anchor and UD alum, Matt O’Donnell, visited the CANR farm this week to visit our blue hens for a segment about the new “Call of the Blue Hen” that will be played at home football games after the Fightin’ Blue Hens score a touchdown.

Watch the segment online by clicking here.

Many thanks to animal and food sciences instructor, Bob Alphin, for his work on the segment.

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Sept. 20: UDBG Friends meeting, lecture

September 14, 2011 under CANR News

On Tuesday, September 20th at 7pm the UD Botanic Gardens will host its Friends’ meeting and a lecture by Gary Smith.  Smith’s lecture is entitled “Unleashing Creativity in the Native Garden.”

Designers solve problems; artists raise questions. Step beyond “solutions” in garden design and find delight in a world where there are more questions than answers. After exploring a visual vocabulary of shapes, patterns, and processes, we’ll look at artists’ techniques for observing and recording it all. You’ll learn how to unleash the artist within yourself, making meaningful gardens that express the relationship between local sense of place and your own creative spirit. Artist, Landscape Architect, and UD Alum Gary Smith celebrates connections between people and plants, combining art and horticulture to explore ecological design and artistic abstraction. Current projects include the Santa Fe Botanical Garden, Lady Bird Johnson Wildflower Center, Brooklyn Botanic Garden, and Winterthur. Gary was an Associate Professor of Landscape Design at the University of Delaware from 1989-98.

Location: Townsend Hall Commons
UDBG Friends: FREE; Nonmembers: $10
Registration requested. To register: Email botanicgardens@udel.edu or call 302-831-2531.

Need a gift for that special someone?  Gary’s new book, From Art to Landscape will be available for purchase at $27.95, a 30% discount. Gary will sign copies following the lecture.

We’re sorry, but no credit cards will be accepted for the evening’s event.

Fall’s a Great Time to Plant!  Take advantage of the weather.  We will be open for business in the plant sale area from 5-6:30pm.

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Sept. 14: Plant Sale

September 12, 2011 under CANR News

The University of Delaware Botanic Gardens has extended its fall plant sale.  The sale, held this past weekend, has added Wednesday, Sept. 14, from 11 a.m. to 1 p.m. to its hours.  It is open to the University community and the general public.

The sale, which features groundcovers and a host of fabulous fall bloomers, will be held in the production area across from the Fischer Greenhouse, behind Townsend Hall on UD’sCollege of Agriculture and Natural Resources campus.

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Sept. 8-10: UDBG Plant Sale

September 9, 2011 under CANR News

The University of Delaware Botanic Gardenswill hold its annual fall plant sale, featuring groundcovers and a host of fabulous fall bloomers, from Sept. 8-10.

The sale will be held in the production area across from the Fischer Greenhouse, behind Townsend Hall on UD’s College of Agriculture and Natural Resources campus.

UDBG Friends can enjoy a members-only day at the sale on Thursday, Sept. 8, from 4-7 p.m. To enjoy this and other benefits, visit the UDBG website.

Hours for the general public are Friday, Sept. 9, from 4-7 p.m. and Saturday, Sept. 10, from 9 a.m. to 2 p.m. Admission is free.

The University of Delaware Botanic Gardens are open year around to provide ideas and inspiration, or for a quiet stroll. The gardens contribute to an understanding of the changing relationships between plants and people through education, research, extension and community support so as to instill an appreciation of plants in the landscape and the natural environment.

This article was originally posted online on UDaily.

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Fall in bloom

September 8, 2011 under CANR News, Cooperative Extension

“I love fall plants, fall temperatures, fall colors, fall sounds. I think it’s the best time of the year for gardening,” enthuses Suzanne Baron, a Master Gardener with University of Delaware Cooperative Extension.

The “third season” is ramping up for Delaware gardeners and many, like Baron, consider it the very best season. It’s starting to get cooler, especially early and late in the day, making it easier to accomplish garden chores. It also happens to be an excellent time of year to get plants in the ground, notes Sue Barton, ornamental horticulture specialist with UD Cooperative Extension.

“Fall’s cooler temperatures and typically higher rainfalls help plant roots become well-established. The soil is still warm and allows roots to grow until the ground freezes,” says Barton. “In contrast, plants may get off to a slower start in spring because the soil is cooler and in summer new plantings can become stressed from heat and drought.”

Planting for fall interest is easy because there’s a wide range of perennials and shrubs that exhibit good color, in addition to the dramatic foliage of many deciduous trees.

At the Teaching Garden at the county Extension office in Newark, Baron and her fellow Master Gardeners have planted thread-leaf irownweed, which already displays bright purple flower tufts that will continue through early fall.  Another purple bloomer, Joe Pye weed, also is in flower. And while the pale blue flowers of Bluestar are long gone, its leaves will soon turn bright yellow. Later in the season, the black gum trees will turn bright red and the aromatic sumac shrubs will display brilliant orange, red and yellow leaves. Plus, the Teaching Garden features one of Baron’s fall favorites, goldenrod.

Baron has planted many varieties of goldenrod — ranging in color from vivid yellow to deep gold — at her farmette outside of Middletown. “I keep adding different ones to fill different needs in my gardens,” says Baron. “The flower lasts a long time and even in late October bees visit it.”

“Goldenrod is a great source for nectar in the fall,” notes J.W. Wistermayer, a Master Gardener who strives for a “riot of color” in his Newark-area yard.

Goldenrod and other fall blooms don’t just add pizzazz to the landscape, they also help out bees and other insects.  “Fall is an incredibly important time to think about flowering plants in the garden so that insects have a supply of nectar and can make it through the winter,” says Wistermayer.  “A lot of people think about planting for the pollinators in the spring and summer but tend to forget about it in the fall.”

In addition to goldenrod, pollinator-friendly choices include asters, spicebush and Joe Pye weed. “Joe Pye Weed is awesome as a nectar source and the hollow stems can be used by native bees when they lay their eggs,” says Wistermayer.

Carrie Murphy, horticulture agent for New Castle County Cooperative Extension, says that her home garden in North Wilmington starts out strong in spring but can be iffy in summer. She says the garden invariably “comes back to life” in the fall.

Murphy designed her garden with fall interest in mind, including such colorful choices as Virginia sweetspire, viburnum, blueberry and oakleaf hydrangea. “The oakleaf hydrangea never disappoints with its exfoliating bark, beautiful blooms that dry and hang on through winter and great fall color — reds, yellows, oranges,” says Murphy.

Asters, goldenrod and thoroughwort are the primary fall bloomers on Barton’s 11-acre property in Landenberg, Pa. They are complemented by the foliage of sourgum (brilliant red), sassafras (bright oranges and yellows), sourwood (red), sugar maple (yellowish orange) and red maple (bright red) trees.  She also has planted lots of sweet gums, which turn purple and orange all on the same plant. Most of these trees are at their peak color in October.

Barton also takes a long-range view on fall gardening. “Everyone focuses on fall color — foliage or flower — but bark, branch structure and remaining flower heads can provide a lot of interest,” she says, “especially late in the fall when most of the leaves are gone.”

Article by Margo McDonough

Photo by Danielle Quigley


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Hurricane Irene: UDairy Creamery

August 26, 2011 under CANR News, Events

The UDairy Creamery will be CLOSED on Saturday, Sunday and possibly Monday due to Hurricane Irene. Please visit the creamery website and Facebook page for more information.

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Hurricane Irene: Carvel REC in Georgetown

August 26, 2011 under CANR News, Cooperative Extension

The Elbert N. and Ann V. Carvel Research and Education Center in Georgetown will be closed from 2pm on Friday, August 26th through Monday, August 29th.  Due to possible power outages, updates to this schedule will be made available via their main phone line at 302-856-7303.

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