Pam Bennett, Barb Bloetscher, Joe Boggs, Jim Chatfield, Erik Draper, Dave Dyke, Gary Gao, Dave Goerig, Dan Herms, Tim Malinich, Jane Martin, Pam Sherratt, Amy Stone, and Curtis Young
|
|
July 29, 2004
|
|
This is the Sevententh 2004 edition of the Buckeye Yard and Garden Line (BYGL).
BYGL is developed from a Tuesday morning conference call of Extension
agents, specialists and other contributors in Ohio.
BYGL is also made available on the Internet from the Ohio State University
Horticulture and Crop Science (HCS) in Virtual Perspective website
(http://bygl.osu.edu). Additional fact sheet information on any of
these articles may be found through the OSU fact sheet database (http://plantfacts.osu.edu).
BYGL is a service of OSU Extension and is aided by major support
from the Ohio Nursery and Landscape Association (ONLA), with additional
funding from the Ohio Chapter of the International Society of Arboriculture
(ISA) to the OSU Extension Nursery Landscape, and Turf Team (ENLTT).
Participants in the July 27, 2004 conference included: Barb Bloetscher (C. Wayne Ellett Plant and Pest Diagnostic Clinic); Joe Boggs (Hamilton/South District); Jim Chatfield (North District/ Horticulture and Crop Science Department); Erik Draper (Geauga); Dave Goerig (Mahoning); Tim Malinich (Cuyahoga); Joe Rimelspach (HCS); Alan Siewert (ODNR Division of Forestry); Dave Shetlar (Entomology); Amy Stone (Lucas); Nancy Taylor (Plant Pathology and C. Wayne Ellett Plant & Pest Diagnostic Clinic); Curtis Young (Allen County); and Randy Zondag (Lake).
Additional factsheet information on any of these articles may be found
through the OSU Factsheet Database (http://plantfacts.ohio-state.edu/)
|
WEATHER WATCH
|
Starting with the south, Shawn Wright reported the following weather data from Piketon 2.31" of precipitation fell in July, compared to the average of 3.99"; and year-to-date actual precipitation is 17.65", compared to the average of 25.38" (that's 7.73" below average). Joe Boggs reported that the Cincinnati area has officially recorded receiving 4.11" of precipitation in July, +0.96" when compared to Julys average. The year-to-date total is 27.16", compared to the average 25.69". July has been a relatively cool month in Greater Cincinnati with 14 out of 26 days thus far having below average high temperatures. For example, the high for July 26 was 66F, which is 13F below average for the day. Only 2 days have had high temperatures that reached 90F.
In the northern tier of the state, weather (especially the rainfall amounts) has varied greatly. Dave Goerig reported that Mahoning County has received 24.68" of precipitation for the year thus far. This compares to the average of 21.61" (+3.07). In July, this area has received 2.54" of precipitation, compared to the average of 3.50" (-0.96"). Amy Stone reported that Toledo is still lagging behind in the rainfall category. In July, Toledo has officially received 1.29" of precipitation for the month. For the year, this area has received 14.91", -4.12" when compared to the year-to-date average.
|
|
HORT SHORTS
|
EMAIL BYGL BITTEN BY BUG
This past week eMail-generating viruses infested computers within the BYGL users system, generating copious amounts of bogus eMails. Commercial search engines were also compromised as a result of other virus activity earlier this week. Though every effort is made to protect our systems, problems do occur. To help protect your computer, your data and your own mailing lists you need to adopt a few simple guidelines. First, make certain your computer is protected by anti-virus software, and that the software is active (turned on) and up to date. Second, do not open suspect eMails or attachments, the subject line of the BYGL is always clearly labeled. Finally, users with broadband access should check to make sure firewalls are installed and that the system is password protected. Some problems will still occur, but these steps will minimize your computers exposure to threats.
|
|
LANDSCAPERS SEEING YELLOW
BYGLers carried on a lively discussion when pressed to diagnose yellowing of maple leaves in a commercial landscape. The first reaction was to consider manganese deficiency. However, the discussion quickly branched out into the difficulties of diagnosing such a common problem. Rather than gravitating toward a common cause, the diagnostician must consider other possibilities to avoid overlooking other heath issues.
First, use soil tests and foliar analysis to identify if a nutritional disorder exists and what that disorder may be. Quick fixes of foliar applied iron chelates could provide temporary greening, but may in the long term exacerbate the problem under some circumstances. The soil test will address the issue of nutrient unavailability due to high pH. The foliar analysis will help identify elements actually in short supply within the leaf.
Second, look at the roots. Conditions inhibiting movement of nutrients into the plant could show up as deficiency symptoms even if the nutrient is available. Check for girdling root, twine or wire, disease or damage from compaction or poor drainage. Air spades provide a non-destructive method of examining root condition, though careful examination with hand tools is always possible. Samples can be submitted to The C. Wayne Ellett Plant and Pest Diagnostic Clinic. Sampling instruction and info available at the website below.
Third, determine if the tree was properly installed. Poor preparation or improper planting can contribute to a host of problems years after the initial installation. Finally, consider local environmental stresses which might be causing leaf drop or discoloration. Step back and look at the whole landscape to determine if heat, drought, construction or traffic patterns are an issue. Pinpointing the cause of leaf chlorosis is not as simple it might seem. Make use of available resources and do not focus on the easiest answer, as it might not be the correct answer.
|
|
BUG BYTES
|
TROUBLED TILIA
ENLT Team members in the Plantarazzi squad descended upon southern Ohio and northern Kentucky last week to take photos of plants worthy of gracing ONLA plant selection publications. The Plantarazzi were thrilled when they found several SILVER LINDEN (Tilia tomentosa) plant models reposing in their full splendorous glory in the perfect light, in the perfect location ... for the perfect picture. However, with fingers poised over shutter buttons, their visions of Pulitzer prizes evaporated when zooming lenses revealed profiles defiled by BASSWOOD LACE BUGS (Gargaphia tiliae!
Silver lindens have long been appreciated for their distinctive foliage. Their leaves feature an upper surface that is a lustrous, glistening dark green, while the lower surface is a soft silver. Breezes prompt glimmering displays as the silvery undersides of the leaves flicker in and out of view. Unfortunately, lace bugs can muffle this captivating feature.
Lace bugs are grouped in the Hemipteran family, Tingidae. Their common name comes from the lacy-like venation of the broad, flat, whitish colored forewings that cover most of the insects body. As with all Hemipterans, lace bugs feed with sucking mouthparts. Most species reside on the underside of leaves, and basswood lace bug is no exception. However, feeding symptoms appear on the upper leaf surface. Symptoms first appear as small yellow spots, or stippling. The spots may coalesce causing upper leaf surfaces to become light green, to yellow, and eventually bronze colored. Lower leaf surfaces are covered by unsightly black tar-like spots of lace bug excrement.
The Plantarazzi observed heavy populations on all of the silver lindens, and the insect's feeding damage had eliminated the normally dark green color of the upper leaf surfaces. Indeed, the upper surfaces appeared light green to yellowish-green. While such heavy damage on Tilia is rare for this insect, it is not unknown, and it is not confined to one species of lace bug. WALNUT LACE BUG (C. juglandis) may also be found on the undersides of Tilia leaves, as well as butternut and black walnut leaves. Most insecticides labeled for use on Tilia will control these insects. The intense feeding damage on the silver lindens disappointed the Plantarazzi...all except Joe Boggs, the soon-to-be-former Plantarazzian who seemed curiously thrilled with the find.
|
|
GIANT SCARY CATERPILLAR
Joe Boggs reported receiving a phone call from a homeowner being held at bay by a HICKORY HORNED DEVIL. The devil was seen just outside the home's front door, and fearing more were lurking about in the shrubbery, the homeowner was afraid to venture outside. This aggressive, hairless, blue-green caterpillar can measure up to 5 1/ 2" long. It is truly one of the "monsters" of the caterpillar world, and could be frightening as well as intimidating to behold ... to the uninitiated.
The hickory horned devil caterpillar has long, curved, orange spines with black tips on the first two thoracic segments, and 3 to 4 shorter black spines on the top of each additional segment. The caterpillar's common name comes from its preferred host and pugnacious behavior. When disturbed, the caterpillar whips its head and thorax around giving the convincing impression that it is trying to impale the offending irritant. The caterpillar is actually incapable of stinging, or doing any real damage, but not for lack of effort. Hickory horned devils have become favored visitors to Extension offices - they have great entertainment value!
In an entomological version of the ugly duckling story, this frightful caterpillar eventually grows up to become the spectacularly beautiful REGAL MOTH, or ROYAL WALNUT MOTH (Citheronia regalis). This giant, colorful silk moth has a wing span of 4-5", and can be quickly identified by the light colored forewings that have yellow spots, and orange veins which run to the outer margin. The hindwings are orange with yellow patches near the bright orange, hairy body. Mated female moths lays eggs on leaves of hickory, ash, lilac, sumac, sycamore, and walnut trees. However, the resulting caterpillars do not cause enough damage to require control.
Finding the caterpillar of this moth crawling near the doorstep of a home is not unusual. As the caterpillar nears pupation, it will typically move from its host plant to the ground to pupate. However, it was puzzling to see a mature caterpillar at this time of the year since adult moths have been flying for a few weeks ... obviously a late bloomer!
|
|
TIME TO COUNT THE EGG MASSES
The GYPSY MOTHS have done their damage this season, and now their egg masses are evident and can be an indicator of things to come in 2005. The Ohio Department of Agriculture (ODA) has unveiled the Gypsy Moth Cooperative Suppression Program Survey Request Application. This application must be completed and returned to ODA, no later than September 1, 2004, for consideration to be part of the 2005 program. The aerial treatments are designed not to eradicate the gypsy moth, but reduce the impact of the pest on trees and communities.
The following requirements must be met to even be considered for the 2005 program: the property must be located in a county that has been quarantined for gypsy moth by ODA; the block must be at least 50 contiguous acres; the tree canopy covers no less than 50% of the block; 35% of the block is comprised of tree species designated as susceptible or moderately susceptible to gypsy moth feeding damage; and the treatment area receives a favorable assessment from the Ohio Department of Natural Resources and the United States Fish and Wildlife Service. After the application is received, the ODA will do an official egg mass survey. To qualify for the suppression treatment, 1,000 egg masses per acre must be present in uninhabited forested land, and a minimum of 250 egg masses per acre present in residential forested land.
This year, ODA is implementing a cost share program. Those applying to be included in the voluntary Suppression Program must pay 50% of the treatment cost, with the state and federal government paying the other half. In 2004, the total treatment cost per acre ranged from $18-44, or $900-2,200 for a 50 acre block.
Additional information, including an application can be found on the ODA website. The web address is http//www.ohioagriculture.gov/gypsymoth.stm You can also receive the information by contacting ODAs Division of Plant Industry, Plant Pest Control Section at 614-728-6400.
|
|
SAWFLIES ON DOGWOOD
Curtis Young reported observing sawfly larvae on red-osier (red-stem) dogwood (Cornus stolonifera) growing on the banks of a pond. He assumed that the larvae were of the DOGWOOD SAWFLY (Macremphytus tarsatus), but became somewhat perplexed when he discovered very young larvae, possibly 2nd instar, curled up right next to relatively mature late instar larvae. The young larvae were about 1/4" long while the mature larvae were about 1" long. The reason for becoming perplexed is that the dogwood sawfly is supposed to have only one generation per year and based on the larvae observed, there appeared to be two generations. Further investigation revealed further confounding information from our own BYGLs. In 2001, we had reports of dogwood sawfly activity in May, July and September. So what's going on here?!
The answer to this question may be two-fold. First, dogwood sawfly adults are present for an extended period of time and can lay eggs throughout that time period, approximately late June through early August. This explains why both mature larvae and very young would be present at the same time in late July. It would also explain why dogwood sawfly larvae could be observed in September from eggs laid in early August.
Second, there could also be two different species of sawfly that feed on dogwoods. In W.T. Johnson and H.H. Lyon's, "Insects that Feed on Trees and Shrubs", 2nd Ed., they describe the dogwood sawfly, M. tarsatus, in detail and make note of a closely related species, M. varianus, but provide little detail of this speciess life cycle. This could explain the May observation of "dogwood sawfly" before the true dogwood sawfly should be in the landscape.
The dogwood sawfly, M. tarsatus, is fairly distinct in appearance in later instars with a fluffy white wax coating over the top part of its body. When the larvae are resting, they curl into a knot and look like bird droppings to the casual observer. Additionally, under the wax fluff, the color of the body changes with successive molts. The newly hatched larvae which look like small caterpillars, are amber in color and are somewhat transparent. At their final molt, the larvae are about 1" in length and they lose their white powdery covering revealing a yellow body with black patches.
The damage that dogwood sawfly produces also changes as it develops. The newly hatched larvae feed together, skeletonizing the leaves. As the larvae mature, they consume the entire leaf except the mid-vein. Some branches to entire plants may be completely defoliated. Finally, mature larvae may damage soft wood such as redwood siding or furniture in the process of producing an overwintering chamber, although dogwood sawfly larvae normally bore into decaying wood near their host plant.
Whether it was one species or 2, sawfly larvae were observed on dogwood and they were consuming the foliage of the plant. The smaller larvae were skeletonizing the leaves and the larger ones were consuming the entire leaf except the mid-vein. Control could be warranted to prevent complete defoliation of the landscape plants. The larvae of sawflies look like caterpillars, however, they are neither moths nor butterflies (Lepidoptera). Instead, sawflies are primitive relatives of bees and wasps (Hymenoptera). Thus, Btk (Bacillus thuringiensis var. kurstaki) products are ineffective against the dogwood sawfly. See the sawfly section of OSU Extension Bulletin 504, "Insect and Mite Control on Woody Ornamentals and Herbaceous Perennials" for further details.
|
|
HAY DAY FOR DEER FLIES
Late July- August is the time that those pesky deer flies (Chrysops spp.) and horse flies (Tabanus spp.) are most active and chomping at the bit to bite any warm blooded, moo-ving animal. These large, buzzing 1/4 - 1 1/8" yellow-brown flies are distinctive not only for the colorful green or purple eyes and black stripes on their abdomen, but mostly for their annoying kamikaze landing on people and ensuing bodacious bites! Unlike the common house fly, both deer and horse flies have jabbing, tearing and lapping mouthparts so that they can tear through the tough hide of animals and imbibe the blood.
Deer and horse fly females lay masses of 100-1000 eggs in a jelly-like goo near water or areas with moist, decaying organic material. Several days later when the larvae hatch, they fall into stagnant water, stream edges, or pools of rotting plant material. Cannibals as larvae, the tabanids eat small insects, snails, earthworms and mosquito larvae throughout the 4-9 instars then migrate to the edge of the water or muck to pupate. The chrysops larvae feed on decaying plant matter before moving to slightly drier conditions for pupation. Depending upon the species and availability of water as larvae, it may take 3 months to 3 years for the adults to emerge. For this reason, it is difficult to blame horses in the neighbor's yard for the horse flies in your yard.
To control these pests, wear light colored clothes and avoid wearing scented hair and skin products when spending time outside. Nary a bug zapper or CO2 trap will catch these as they are attracted to dark moving objects and usually bite during the day! Apply products containing DEET when necessary and stay away from woods and ponds if possible, on hot, humid, days when the air is still, as this is when they are worse. Another idea is to place a blue or orange moving target (windmill, etc) on your hat or an object near you and apply sticky glue to the moving pieces. Apparently this works very well.
|
|
BYGL WINDSHIELD WIPE
BYGLers also ran into a few other insects this week including
* The rolling brownout of black locust trees produced by adults and larvae of the LOCUST LEAFMINER (Xenochalepus (= Odontota) dorsalis) has now overtaken much of Ohio, with flaming brown trees being most evident in the southern and central part of the state. Adults skeletonize leaves, and larvae produce glove-shaped blotch mines. Adults are small, elongated, flat beetles with a black head, brownish-orange wing covers and a distinct black wedge-shaped pattern running down the back. Black locust trees are now brown locust trees, and easy to identify along interstate highways.
* Erik Draper and Barb Bloetscher reported that they have each received several samples from northeast and central Ohio, respectively, of damage caused by WHITE PINE WEEVIL (Pissodes strobi). However, it is far too late for effective control measures to be applied since the weevils have already matured and vacated infested terminals. As the insects common name implies, the weevil infests white pine, but it will also attack Scotch, jack, red, and pitch pine as well as Douglas-fir, Colorado blue and white spruce. The white, legless weevil larvae tunnel just beneath the bark downward from the terminals causing terminals to become wilted, turn brown, and die. Control measures include application of insecticides in early spring to target females before they lay eggs; and the removal and destruction of infested terminals prior to larval maturation and adult emergence later in the season.
|
|
DISEASE DIGEST
|
A BUSHEL FULL OF DISEASE
Erik Draper reported that from a vegetable growers point of view, it has been a challenging year in the fields of the Northeast part of the state. With all of the driving rains and steady downpours, many diseases have just had a field day! While fruit producers are happy because all of the moisture really plumps up the fruit, veggie growers are finding field work and harvesting a real nightmare.
How can that be so difficult? Try picking half an acre of tomatoes and moving quickly to the bell peppers before the next cloudburst. Just another day in the field hustling trying to get the work done and veggies picked. About five days later, the bottom leaves of the tomato plants are covered with spots and begin to turning yellow. The local veggie Extension guru drops by in response to the concerns expressed by the grower. The grower is shocked to find out the reason the fungicides being applied won't control those spots is because they are not fungi but bacteria. Then the next bomb drops and because the plants were worked when the foliage was wet, the bacteria was spread right down the rows to the entire crop.
Then to top it all off, the zany Extensioneer tells them to be careful because that same disease can be transferred to the bell peppers if they are worked when the foliage is wet. So the Extensionoid says to be sure and wait until the foliage drys out before working in the plants. And the Extension eccentric keeps repeating "Wow, isn't this an exciting learning year?" At that point, the Extension type is run off the farm at gunpoint.
With all the crazy weather conditions, it all comes down to scouting all of the crops often. It also means not missing or skipping any fungicide sprays and keeping the spray intervals tight. If there is any doubt as to what is going on or causing problems, quickly send a sample into the C. Wayne Ellet Plant and Pest Diagnostic Clinic. Accurate identification of which disease, or even if it is a disease, can not only save money, but make all of the difference in saving or losing the crop. Maybe the best statement heard this season is "It's crazy out there... I'm seeing diseases and pests that before this year, I've only seen their pictures in books!"
|
|
CEDAR QUINCE RUST
Now is the time of the season that infections of hawthorns by the cedar quince rust fungus (Gymnosporangium clavipes) become quite apparent. Hawthorn fruits look like tiny, frilly decorated Christmas tree ornaments with the orange aecial spore masses protruding out in all directions. Often sidewalks or other plants under the trees will turn orange from fallen fruits and washed off spores, and if the hawthorn is on a sidewalk leading inside, carpets may take on an unwanted rust color. It gives a whole new meaning to disease clean-up, in this case simply to prevent unwanted side effects of stain damage to carpets and other home surfaces.
As for true plant disease control, it is way too late to prevent infections on hawthorns since these infections only occur in spring when teliospores arrive from the juniper alternate hosts. Trying to prevent infections of junipers from the aeciospores now present on hawthorns is problematical because of the long period of time, from now into the fall, that these spores can infect junipers. So, if you want to prevent this from happening next year, remember to use protective fungicidal sprays on hawthorns in late April and early May. Also, remove as many of the rust-cankered areas on junipers in early spring as possible, and avoid planting junipers near the hawthorns which exhibit problems each year with cedar quince rust.
|
|
CSI - WHITE PINE, EPISODE II
Now that the miscreant pine bark beetles have been dismissed as being the primary suspect in the death of the eastern white pine and charged with accessory to death, the hort-crime scene investigators need to turn to less obvious suspects, the fungi. Two possible suspects in this case could be ARMILLARIA ROOT ROT (Armillaria spp.) and PROCERA ROOT DISEASE or WHITE PINE ROOT DECLINE (Verticicladiella procera). To finger these culprits, some closer investigation will need to be done including getting down and dirty examining the base of the dead tree.
Non-specific symptoms of an Armillaria root rot include reduced growth, gradual decline, and die back that can lead to death of the tree. Once the tree is dead or close enough to being dead to be sacrificed, necropsy may reveal white fungal mats underneath the bark, black shoestring-like structures called rhizomorphs underneath the bark, and resin soaked soil near the root collar or soil line. If the victim is left standing into the fall, clusters of honey colored mushrooms may grow near the base of the infected tree.
Non-specific symptoms of white pine root decline include delayed bud break and reduced candle elongation. This fungus may cause a rapid death of 3-15 year old trees. The effect of the fungus's activity results in a uniform browning of the needles culminating in death. Dead needles may cling to twigs for a year or more. Other symptoms of this disease include resin flow at the tree base and a chocolate brown to dark olive-brown canker underneath the bark at the base of the tree. Infected trees usually die in the months of May-July.
There are no fungicides recommended for managing these diseases. Horticultural practices are the only measures to be taken to reduce the activities of these fungi. Control measures to be taken include avoid planting eastern white pine on wet sites, avoid wounding trees near their bases, and keep trees growing vigorously by properly watering, fertilizing, and mulching. When a tree is killed by one of these fungi, remove as much of the infected tree as possible, including the roots. And do not replant eastern white pine into the same area, it wasn't a good site in the beginning.
In our diagnosis, we should not forget the possibility of abiotic (non-infectious) factors that can lead to yellowed or browned needles on pine, including fall needle drop, winter injury (desiccation), nutrient deficiencies, salt damage, hail damage, prolonged flooding, and root injury caused by nearby digging.
|
|
TURF TIPS
|
FAIRY RINGS
. . . have appeared in Ohio on home lawns, commercial turf, parks, golf courses, and sports fields. All turfgrasses can be affected and fairy ring can occur from early spring to late fall. Mild temperatures and moist conditions favor growth of the fungus that causes this condition. In many instances symptoms of this disease are rings (circles and/or partial circles 1 foot to many feet in diameter) that appear in the turf. The rings are a different color from the lawn, and appear as dark green or brown rings. At times the fungus may produce mushrooms in rings.
Smiley, Dernoeden and Clark describe three types of fairy rings in Compendium of Turf grass Diseases: "Fairy ring type can be confused if observed on only one or a few occasions, because all symptoms may not occur simultaneously. Type 1 rings exhibit a zone of dead grass, one or two zones of darker green stimulated grass and mushrooms (basidiocarps). Type 2 rings exhibit a single ring of darker green stimulated grass and mushrooms (basidiocarps). Type 3 rings appear as circular arrangements of mushrooms (basidiocarps), and they have no visible effect on grass growth. In all cases, mushrooms (basidiocarps) are produced only briefly when environmental conditions in soil stimulate their production."
Controlling fairy ring is difficult and in most cases the rings are left alone (especially for Type 2 and 3). Fertilization of the turf is one option for trying to cover up the symptoms. In cases where turf loss is occurring, fungicide treatments may be tried. Generally speaking controlling fairy ring with fungicides may vary from acceptable to no control. Fungicides that have shown some efficacy on fairy ring include flutolanil (Prostar), pyraclostrobin (Insignia), and Azoxystrobin (Heritage). In Ohio the use of soil wetting agents with core aeration and heavy irrigation have often given the best results.
|
|
COTTON BALL CHINCH BUGS
With the last few days of rain, the rampant runs of chinch bugs sucking Kentucky bluegrass stems and leaves has subsided, due to the return of their dreaded infection with the fungus Beaveria spp. Predictably, chinch bugs are worse in hot, sunny spells, especially on fine fescue planted in full sun. They also prefer Kentucky bluegrass, perennial ryegrass, bentgrass and zoysiagrass in the sun, however prolonged rainy, clouded spells promotes Beauveria to grow which infects the chinch bugs. Once infected, white, fungal fuzz (mycelium) covers the chinch bugs so that they look like little white fuzzy blobs.
Interestingly, well tended, irrigated lawns can have chinch bugs despite the rain and irrigation. Dr. Shetlar believes that these bugs have become resistant to the Beauveria and has a graduate student studying this curiosity. She will be describing her project at OSU Turfgrass Field Days August 18 at the OSU Turfgrass Research Facility
|
|
INDUSTRY INSIGHT
|
TO FERTILIZE OR NOT TO FERTILIZE?
This year we have been faced with several issues that are causing off colors in plants. We have had cooler than normal night temperatures with long periods of wet leaves. In some areas this has been followed by soils that are abnormally dry. Some people have over compensated and wetted the soils to a point of drowning plants. All of these factors can contribute to poor coloration of stock. What should be done?
Soil tests and foliar analysis should be done to determine what nutritional problems may exist. This is not an issue you can fix by just fertilizing; plants may have slowed or stopped growth by the time the problem showed up. Check the root environment to see if it is too wet or dry. This can't be done by looking at the surface; carefully examine soils several inches down. If plant roots are shut down by soluble salt injury, disease or excess or lack of moisture, they will show problems in the foliage. Misapplication of herbicides, growth regulators and other pesticides can distort or discolor foliage and growth. Look at all possibilities before applying fertilizer.
|
|
COMMERCIAL ARBORIST LIST
. . .is now available as hardcopy only from the Ohio Chapter of ISA. To request a copy contact Alan D. Klonowski, Executive Director, Ohio Chapter ISA, 7465 Brecksville Rd. Independence, Ohio 44131-6416; ph. 216-544-4737; Fax216-642-8188. The Ohio Chapter of ISA can also be accessed at http//ohiochapterisa.org/
|
|
COMING ATTRACTIONS
|
BYGLIVE! IN CINCINNATI
The fifth 2004 BYGLive! Diagnostic Walk-About will be held this coming Monday, August 2, at Spring Grove Cemetery & Arboretum. This monthly hands-on training program focuses on diagnosing plant pest, disease, and physiological problems. Directions to the meeting location are enter Spring Grove Cemetery & Arboretum through the main entrance off Spring Grove Avenue; straight ahead will be an underpass - drive through the underpass; turn right at the first intersection, and travel approx. 100 yards to the meeting site on your left. For more information, call Joe Boggs at 513-946-8993.
|
|
FINAL DIAGNOSTIC WALKABOUT
...in the greater Cleveland area this summer occurs Thursday August 5th in the North Olmsted area. Charles Behnke and Tim Malinich, horticulture agents with Ohio State University Extension will take a critical look at landscape and turf problems during the early morning walkabouts. Recertification credit available for 8 and 6A. Call 216-397-6023 to request a registration flyer with more information.
|
|
AGI GREEN INDUSTRY GET TOGETHER
September 9th, 2004 at Willoway Nursery, 4534 Center Street, Avon. Dr. Norman Fausey of the USDA-ARS will discuss "Drainage and its Impact on the Urban Environment." This topic will be a major issue the nursery and landscape industry will face dealing with the Storm Water 2 regulations. There will also be a tour of Willoway Nursery starting at 3:30 pm. There is a $35.00 registration fee that covers the cost of the program and the meal which will start at 6:00 pm. You can register by sending your checks to AGI , Fall Get Together, P.O. Box 123, Painesville, Ohio 44077-0123. Reservations are due to that site by September 1, 2004. For more information call Charles Behnke at 440-326-5851.
|
|
WOSU GREEN SCENE
This week's WOSU News 820 Green Scene gardening and landscaping Q&A program will feature Luke Messenger, the Director of Newark's world-class Dawes Arboretum, and OSU Extension's Curtis Young. Join Luke, Curtis and WOSU host Bob Singleton from 6:30pm to 8:00pm this Friday night or call in at 614-292-8513
|
|
NORTHWEST OHIO SUMMER FIELD DAY TO BE HELD NEXT WEEK
This year's Northwest Ohio Summer Field Day will be held on Wednesday, August 4th at Owens Community College (OCC). This year's line up of presenters is awesome and will include Laura Deeter/OSU/ATI; Erik Draper/OSU Extension; Bill Hendricks/Klyn Nurseries; Joanne Kick-Raack/OSU Pesticide Applicator Training; Goerge McAllister/Select Stone; Jeff Mgebroff/Hunter Irrigation; Joe Rimelspach/OSU Extension; Dave Shetlar/OSU Extension; Marti Wellington/OCC; Dave Wichman/North Branch Nursery; and Curtis Young/OSU Extension. Registration information is available by contacting the OSU Extension office at Toledo Botanical Garden at 419-578-6783 or 800-358-4678. Don't miss out on this educational opportunity in NW Ohio!
|
|
BYGLOSOPHY
|
When you question whether the time and effort put into diagnosis is worth it, remember what Alan Siewert, ODNR urban forester reminded us of this week "In Horticulture, as in medicine, prescription without proper diagnosis is malpractice."
|
|
