"Have not heard about using potassium bicarbonate for the control of apple scab. Can you expand on this a bit? How effective is it? Any downsides? Timing of application? Sources for more information? "
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"Thinning to minimum stocking levels may help. Also, research on the benefit of nitrogen fertilizer application is ongoing."
Terminal Bud Scar: A Tree's Health Chart
Scarred for LifePaul Hetzler, ISA Certified ArboristIt makes sense that dying trees have terminal bud scars. Sounds like an awful condition – my condolences. But the healthiest trees have them, too (terminal scars, not condolences). It’s a good thing, since terminal bud (aka bud-scale) scars provide an excellent way to leaf through a tree’s health records going back 5 to 10 years.After a woody plant has its full complement of leaves, and they have hardened off, that tree or shrub makes both…See More
Treeconomics 101: Early Fall Color Explained
Treeconomics 101: Color-Coded ProsperityDeciduous trees, lakeside ice-cream stands, and marinas all close down each autumn for the same reason: as daylight dwindles and cold creeps in, their outfits become less and less profitable. At a certain point it makes sense to batten the hatches until the following spring. Some enterprising holdouts stay open longer; perhaps they have a cost advantage others do not, or have less competition. A few are the opposite, closing shop at the first hint of…See More
New Beech Threat Nothing to Sneeze At
Beech Health UpdatePaul Hetzler, ISA Certified ArboristIn the early 19th century, a Prussian diplomat asserted that “when France sneezes, the whole of Europe catches a cold.” Things changed, obviously. For a long while it has been an American financial sneeze able to make the world ill. Though China’s economy is projected to soon zip past ours, other countries still put hankies to their faces when the USA coughs.Canada has been covering up for some time now, but not for the usual reasons.…See More
Forest Pests are Exploding
Forest Health ForecastIf you’re tired of hearing about new invasive forest pests, I’m right there with you. Seems they arrive at an ever-increasing pace, and the harm potential ratchets up with each newcomer. At this rate maybe we’ll get a wood-boring beetle whose larvae explode, which would put things in perspective. As distasteful as it is to peer at the cast of ugly new characters, it’s better to know what we’re up against.Novel pests put everyone on a steep learning curve. For the species…See More
Preventing Anthracnose and Apple Scab
Crabby Apples and Other ComplaintsWe waited a long time for summer to arrive this year, so it is unfair that some flowering crabapples are turning yellow and brown and shedding their leaves already. Mountain-ash, serviceberry, and hawthorn are also affected by the same disorder. Here and there a few maples and other species are also dropping random leaves, which are for the most part still green, often with patches of black or brown. The latter situation has a different origin, but both are…See More
Oak Wilt: You Can Make a Difference
Oak WiltIt’s hard to be cheerful in a job where I am expected to keep up on each newly arrived or imminent threat from invasive insects, novel plant diseases, and worrisome trends in the environment. Although I typically deflate everyone’s happy-bubble when I give a talk, I’ve discovered we need not fret that the sky is going to fall.The National Atmospheric Deposition Program (NADP) is a joint effort of research institutions, government agencies and nonprofit groups; their mission is to…See More
Healthy Forests, Healthy Fish
Fish ForestryAs many anglers know, trees and fish are closely related. Really; it goes way beyond basswood. The relationship is not in the sense of phylum or family, of course. And it's not like the way in which tomatoes and fish were briefly married in a 1996 experiment at Oakland, California-based DNA Plant Technology in an attempt to get a frost-tolerant tomato (or possibly a saucy fish). If it weren’t for tree cover, cold-water fish species would not survive in most of the streams they now…See More
Trees Are Sick of the Weather
Maple Motion SicknessNo one wants to be told they have a weathered complexion, but many trees this summer, especially maples, are looking a bit worse for the wear as a result of conditions earlier in the season. “Leaf tatter” is a term used to describe foliage which may be torn and bedraggled-looking, distorted, sometimes with blackened spots or zones. It can easily look like a disease or mysterious pest is ravaging the tree.As tree buds open and young leaves begin to unfurl, they can get…See More
Ice Meadows
(N)ice MeadowsNow that the weather has finally warmed up, we can appreciate ice a little more. Among other things, ice greatly improves summertime drinks, and an icy watermelon is hands-down better than a warm one. And in this part of the world, ice also provides us with unique wildflower meadows. Along stretches of riverbank in the southern Adirondacks, rare Arctic-type flowers are blooming now in the fragile slices of native grasslands that are meticulously groomed each year by the scouring…See More
Perennial Pet Peeves
Local VolcanoesWhen you think about it, landscape trees have a rough life. Firstly they don’t get to choose their neighborhood, whether good, bad or indifferent. Depending where they are planted, they may need to contend with helpful watering by territorial dogs, materials-testing by energetic kids, entanglements with errant kites, or other issues.Rooted in one spot day in and day out, year after year, they suffer from – well, boredom, I imagine. And from restricted root area, drought stress,…See More
Helping Trees Recover from Flooding
Most Things in ModerationAs a teenager, my son had a saying, whether original or borrowed I don’t know (the saying, that is), which went something like “All things in moderation. Especially moderation.” It would seem Mother Nature took that to heart, and dispensed with moderate rainfall and snow melt this spring. If not her, then maybe it was Creepy Uncle Climate Change. At any rate, the resultant flooding has been heartbreaking to observe.While I am of course sensitive to the anguish of those…See More
Happy Tree Day!
Plant a Legacy on Arbor DayMuskrat Week. Velcro Month. Arbor Day. You know it’s an obscure event when the greeting-card trade hasn’t bothered to capitalize on it. While not the best-known observance, Arbor Day has a respectable history, as well as a local connection.Rooted in northern NY, Arbor Day is observed on the last Friday in April. J. Sterling Morton of Adams, NY germinated the concept in 1872 to highlight the need to conserve topsoil and increase timber in his adopted state of Nebraska.…See More
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- How many acres of woodland do you own or annually manage?
- 70
- Please describe, with two or three sentences, why you are interested in woodlot ecology and management. Your answer helps us ensure that only those people truly interested in woodlots are added as members.
- As the natural-resources educator at CCE St. Lawrence, I would like to know as much as possible about woodland ecology because every so often I like to be able to give a correct answer to an inquiry.
Paul J Hetzler's Blog
Terminal Bud Scar: A Tree's Health Chart
Posted on September 24, 2019 at 7:00pm 0 Comments 0 Likes
Scarred for Life
Paul Hetzler, ISA Certified Arborist
It makes sense that dying trees have terminal bud scars. Sounds like an awful condition – my condolences. But the healthiest trees have them, too (terminal scars, not condolences). It’s a good thing, since terminal bud (aka bud-scale) scars provide an excellent way to leaf through a tree’s health records going back 5 to 10 years.
After a woody plant has its full complement of leaves, and they have hardened off, that…
ContinueTreeconomics 101: Early Fall Color Explained
Posted on September 23, 2019 at 4:39pm 0 Comments 0 Likes
Treeconomics 101: Color-Coded Prosperity
Deciduous trees, lakeside ice-cream stands, and marinas all close down each autumn for the same reason: as daylight dwindles and cold creeps in, their outfits become less and less profitable. At a certain point it makes sense to batten the hatches until the following spring.
Some enterprising holdouts stay open longer; perhaps they have a cost advantage others do not, or have less competition. A few are the opposite, closing shop…
New Beech Threat Nothing to Sneeze At
Posted on September 14, 2019 at 10:10am 0 Comments 0 Likes
Beech Health Update
Paul Hetzler, ISA Certified Arborist
In the early 19th century, a Prussian diplomat asserted that “when France sneezes, the whole of Europe catches a cold.” Things changed, obviously. For a long while it has been an American financial sneeze able to make the world ill. Though China’s economy is projected to soon zip past ours, other countries still put hankies to their faces when the USA coughs.
Canada has been covering up for some time…
ContinueForest Pests are Exploding
Posted on August 31, 2019 at 12:05pm 1 Comment 0 Likes
Forest Health Forecast
If you’re tired of hearing about new invasive forest pests, I’m right there with you. Seems they arrive at an ever-increasing pace, and the harm potential ratchets up with each newcomer. At this rate maybe we’ll get a wood-boring beetle whose larvae explode, which would put things in perspective. As distasteful as it is to peer at the cast of ugly new characters, it’s better to know what we’re up against.
Novel pests put everyone on a steep learning…
ContinueComment Wall (1 comment)
- At 2:28pm on May 18, 2017,
Ronald L Frisbee said…
Welcome Paul! Any chance we will see you at FRESH? I hope so! Ron Frisbee
Forum
Looking for white mulberry trees for research
Started by Connor Youngerman in Agroforestry Aug 14. 0 Replies 0 Likes
Greetings forestry ning communities! My name is Connor Youngerman, and I’m an extension support specialist at the Cornell Small Farms Program; my focus is agroforestry and mushroom production. We are currently working on a research grant to…Continue
How to get rid of buckthorn
Started by Randy Williams in Woodlot Management. Last reply by John McNerney Aug 2. 3 Replies 0 Likes
I have some property where the best timber was harvested several years before I purchased it. There are now many areas where the buckthorn is so thick that nothing will grow under it. I am looking for suggestions on how to get these areas back…Continue
Small-Scale Logging
Started by Peter Smallidge in Project Profiles. Last reply by John McNerney Apr 15. 4 Replies 1 Like
Small-Scale Logging: Sugarbush and Woodlot Management Issue: Many woodlot owners and maple syrup producers want to be more active in gathering logs or firewood from their property. Often there are too few acres or too few trees to attract a…Continue
Tags: yourself, harvesting, woodlot, management, it
Replanting after timber harvest with climate change in mind
Started by Ben T. in Woodlot Management. Last reply by Patrik Schumann Mar 26. 1 Reply 0 Likes
Hi Everyone,I’ve been wondering what tree species are going to thrive over the next 50+ years as the climate warms in New York and I’m curious if folks are enhancing plantings of particular tree species for future commercial harvest with warmer and…Continue
Rust Colored Hemlock Bark
Started by Carl Albers in Woodlot Management Dec 31, 2023. 0 Replies 0 Likes
Picture of a hemlock with rust colored bark. When I cut a nearby tree, also with rust colored bark, it was infested with HWA. Attached picture shows a Logrite ATV arch in use.Continue
Rust Colored Hemlock Bark
Started by Carl Albers in Woodlot Management Dec 31, 2023. 0 Replies 0 Likes
The hemlocks in my woodlots have been infested with hemlock wooley adelgid (HWA) for at least three years now. Lately I've noticed some of them having a rust colored bark and I wonder if this is normal and that I just didn't notice it previously? …Continue
How to control mature white pine and hemlock to allow enrichment planting of hardwoods
Started by Peter Smallidge in Woodlot Management Nov 28, 2023. 0 Replies 0 Likes
I had a question about control of mature white pine and hemlock to improve sunlight for enrichment planting of hardwoods. Following is my response, but I would like to know if anyone else has any experiences to share with control of these to…Continue
Story in Northern Woodlands Magazine on Deer Impacts
Started by Brett Chedzoy in Woodlot Management Aug 8, 2023. 0 Replies 1 Like
This Spring we had an opportunity to speak with writer John Litvaitis about the big picture of deer impacts on the hardwood forests of the Northeast. I posted the original story from the summer edition of Northern Woodlands to the…Continue
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