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August News


Using Indicator Plants and Growing degree days Information as Pest Management Guides

Magnolia x soulangiana

Researchers have been determining Growing degree days numbers associated with life stages of many species of pests and stages of development of various indicator plants. Informed landscape plant managers are using this information to make wise pest management decisions.

For example, years of careful observation have shown that the eastern tent caterpillar is a young larva and most vulnerable to control measures, between 100-200 growing degree days. This is also the GDD range when saucer magnolia, Magnolia x soulangiana, is in pink bud to early bloom. A landscape manager can observe the development of local saucer magnolias to pinpoint the best time to treat or remove the small eastern tent caterpillar nests.

Another example: Suppose pine needle scale has been a problem in past years and a grounds manager wants to prevent further outbreaks. By checking references such as Coincide: The Orton System of Pest Management, he or she learns that the eggs of pine needle scale hatch and first generation crawlers are most vulnerable between 200 to 350 GDD. This is also about the range that horsechestnut, Aesculus hippocastanum, blooms. When 150 GDD have accumulated, or when horsechestnut just begins to bloom, it is time to scout pines for newly hatched pine needle scale crawlers. Since the crawler stage is the most easily controlled life stage, when crawlers are observed, it is time to treat with a registered material.

Plant phenological indicators are only guidelines. Grounds managers still have to monitor pest life stages to pinpoint what is happening at each site. Likewise, specific events in insect development occur within GDD ranges, not by a specific number. Tracking GDD and phenological indicators gives a useful way of knowing when to look for a particular pest and to manage it in its most vulnerable stage. Following signals in nature helps arborists, nurserymen, and grounds managers make effective pest management decisions and minimizes the impact of their pest control applications on the environment.

PHC for Trees SRN 11-22-22

PHC for Trees SRN 11-22-22

PHC for Trees SRN 11-22-22 is a fully soluble product that provides both chemical and biological fertility. Its chemically-based elements address trees immediate nutritional needs, while its beneficial bacteria will help to sustain fertility over the long term. Recommended for spring or fall applications.


Dylox 6.2

DYLOX 6.2 is the Standard for Curative Grub Control working in arid or rainy conditions. Dylox 6.2 provides fast-acting control of surface-feeding and soil insects, including white grubs, mole crickets, sod webworms, cutworms and armyworms. Not wasting any time, Dylox works immediately after irrigation or rainfall, and penetrates thatch up to 1/2-inch thick when watered properly, providing grub control within 24 hours. Under normal conditions, Dylox controls the pest and then degrades quickly. There are no Dylox restrictions regarding turf species or sites for landscape and recreational-area uses.



AUGUST 18-27, 2020

TED is going virtual this year! Virtual TED will give you the opportunity to view all sessions at your own pace. No more choosing between sessions and missing content. Attendees will have 10 days to view up to 12 on-demand sessions. On August 27, 2020 at 3:00 p.m. attendees will come together for a virtual Q&A session with the speakers and ILCA Turf Committee. Topics: All things about seed, natural lawn care products, calibration, micronutrients, best management practices, ball field renovation, updates from the Department of Agriculture, aeration, fungicides, sequential application and timing of them.

ILCA Event Calendar


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Contact your sales rep for more information

Tom Breier: email or (630) 417-9054

Tim Breier: email or (630) 417-9056

Dan Breier: email or (630) 417-9055

Mark Breier: email or (630) 417-9057

Kevin Spiller: email or (630) 903-5240

Zully Arroyo: email or (708) 506-9933 (Hablo EspaƱol )

ILCA Supplier Member25 yr ILCA Member
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