Arboriculture

Herbicide Phytotoxicity in Landscapes and Nurseries: What’s In a Name?

Herbicides represent important tools to manage unwanted plants (weeds) in Landscapes and Nurseries. Herbicides are especially efficient and efficacious in lieu of physical means. Unfortunately, mistakes do happen. And when herbicide mistakes happen, they often present HUGE problems for our industry. Mistakes may occur from supplier advice, our failure to thoroughly read and understand herbicide labels, notoriously confusing labels, uncontrollable variables such as weather, and misapplication, among other contributors.

Spotted Lanternfly

Spotted lanternfly (Lycorma delicatula), or SLF, is an invasive insect that has spread throughout the mid-Atlantic and parts of the Midwest since its discovery in central Pennsylvania in 2014.  SLF damages plants directly while feeding and excretes honeydew that can foul surfaces and attract other pests.  Infestations in both rural and urban areas can be a significant nuisance to the public. Though SLF can cause damage to a wide variety of plants, it is of specific concern for grape producers and a potential concern for other fruit producers.

The Tree Doctor’s Diary: Recent Experiences from the Field

In his role as Michigan’s Plant Doctor, aka “The Tree Doctor”, Dr. Dave is called upon every year by Nurserypersons, Arborists, Landscapers, Suppliers and the Public to solve perplexing plant problems in the landscape and nursery. These plant problems range from pests to diseases and from environmental issues to dilemmas from cultural inputs. In this interesting session, a variety of problem-solving scenarios will be presented in his interesting story-telling style that will not likely lull you to sleep.

Introducing the Tree Diversity Reporting Index: A New Tool to Assess Urban Forest Biodiversity

In recent years, it has become a growing priority to establish and maintain resilient urban forests. This has been motivated, in part, by significant tree loss following varied pest and pathogen infestations, and in part due to concerns regarding urban tree survival in changing climatic conditions. Plans for urban forest resilience are rooted in principles of urban forest biodiversity, begin with comprehensive inventories of urban tree cover, and are often laid out in urban forest management guidance documents.

An Oak Wilt Update: New Revelations in Detection and Management

Oak Wilt continues to spread in Michigan. The disease has infiltrated some communities so insidiously that it has become almost impossible to stop. Property owners are so confused with the array of management options and the cost estimates that they become indecisive about how to proceed. Community associations often become gridlocked.  In these situations, the disease continues to spread and becomes far more difficult and costly to manage. Furthermore, mismanagement is not uncommon, leading to more costs and disease advancement.

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