Got Nature? Blog

Posted on August 14th, 2014 in Forestry, How To, Invasive Plant Species, Podcasts | No Comments »
Lenny Farlee

Lenny Farlee pointing out invasive Jet Bead at a Purdue Extension invasive plant training program.

If you have ever taken a walk through a forest, a woodland or a park, then you have likely encountered exotics plants. What may be difficult to distinguish, however, is whether or not those exotic plants are invasive. Unfortunately, most of us think that if it’s green, it’s good, but being green could be misleading. Invasive exotic plants are consuming growing space at an alarming rate and replacing our native species. These changes in plant species can have dramatic impacts, both economically and ecologically, to landowners and the ecosystem. Invasive species are such a problem that we are devoting an entire Podcast series to this topic.

In Part I of the Got Nature? Podcast mini-series on Invasive species, our host, Rod Williams, will be interviewing Lenny Farlee, an extension forester with the Hardwood Tree Improvement and Regeneration Center at Purdue University. Lenny will be the first expert in a series of podcasts devoted to the topic of invasive species, both terrestrial and aquatic. Lenny will be introducing our listeners to the topic of invasive species, identifying which species pose the greatest threats to the woodlands within Indiana and discussing the ecological and economic impacts that invasive plants pose to landowners. This podcast will also highlight methods that can be used to manage woodlands infested with invasive plants.

Resources
Midwest Invasive Plant Network
Indiana “Most Unwanted” Invasive Plant Pests
Purdue Extension Agriculture & Natural Resources
iTunes-Got Nature?
Got Nature? Podcasts

Lenny Farlee, Sustaining Hardwood Extension Specialist
Department of Forestry and Natural Resources, Purdue University

Rod Williams, Associate Professor of Wildlife Science
Department of Forestry and Natural Resources, Purdue University


Posted on August 11th, 2014 in Drought, Forestry, How To, Plants | No Comments »

mulch at base of tree

Although fresh chips from tree pruning and removals look great for mulch and compost, there are some hidden issues. First, fresh wood chips can be very acidic (sometimes down around a pH of 4) which can be detrimental to plant growth. Also fresh chips have a high C:N (carbon to nitrogen ratio), and it must borrow nitrogen from the soil to help the decomposing process. So mixing the chips with the soil can actually reduce fertility for a while. Both of those can be problems for plants trying to grow in a bed mulched or mixed with fresh chips. Ideally, the newly ground chips should compost properly for a full year. If nitrogen fertilizer is added to the soil/mulch mix, it can speed up the process.

The effects of wood chips as mulch involve mainly the surface of the soil, which means it’s mainly shallow-rooted plants like perennial and annual flowers that would run into fresh wood chip trouble. This includes serious chlorosis and other health issues involving establishment and development. Deeper-rooted trees and shrubs are less likely to be affected as much; however, they are subject to the effects of the poor C:N ratio. I would suggest removing as much of the chips as possible, piling them for composting and replacing with proper soil for perennial growth unless you can wait for a full year to allow the decomposition cycle to be completed. This may help eliminate issues with new plants going into that location.

Resources
Mulching Conserves Soil Moisture, Department of Horticulture and Landscape Architecture
Growing Perennial Flowers, The Education Store (Search keywords to find the resources you need)
Collecting Soil Samples for Testing, The Education Store
Soil and Water Conservation Districts, Indiana State Department of Agriculture
Certified Soil Testing Laboratories, Purdue Department of Agronomy/Extension

Lindsey Purcell, Urban Forestry Specialist
Department of Forestry and Natural Resources


Posted on July 31st, 2014 in Forestry, How To | No Comments »

​Many trees and plants in Indiana suffer from iron deficiency, chlorsis, induced by high (alkaline) soil pH. A symptom from the iron deficiency is the leaf yellowing. Plants suffering from iron chlorosis will often exhibit dieback and poor growth. Chlorosis is especially a problem with trees planted along streets and around homes where the original topsoil was removed or mixed with subsoil. The lime content of many of these subsoils is high. Most likely, the best course of action would be to conduct a soil test for mineral deficiencies and perhaps tissue analysis.

Resources
Iron Chlorosis of Trees and Shrubs, The Education Store
Collecting Soil Samples for Testing, The Education Store
Soil and Water Conservation Districts, Indiana State Department of Agriculture
Certified Soil Testing Laboratories, Purdue Department of Agronomy/Extension
Certified Arborists, International Society of Arboriculture (ISA)

Lindsey Purcell, Urban Forestry Specialist
Department of Forestry and Natural Resources, Purdue University


Posted on July 26th, 2014 in How To, Podcasts, Wildlife | No Comments »

Planting food plots is a popular activity for landowners interested in attracting wildlife for viewing or hunting. The following are answers to questions we commonly receive regarding food plots, providing basic information to consider when planning for food plots as part of a comprehensive wildlife management plan for your property.

What is a food plot, and how important are food plots for wildlife in general?
A food plot is simply an agricultural crop or forage planted to attract wildlife for observation or hunting. While food plots are readily used by wildlife, they are not necessarily needed by wildlife. When we manage wildlife habitat, we break the habitat down into four basic components. Those components are food, water, cover and space. When we assess a habitat for the needs of a particular wildlife species, we want to determine which of those basic habitat components are most limiting or in need of the most work. Food is rarely the most limiting factor for wildlife. The most limiting factors are usually cover and space. Therefore, food is usually not the first habitat component needing to be addressed on the landscape. The primary purpose of planting food plots is to meet human desires to attract wildlife, rather than a necessity for wildlife. That said, food plots can still be incorporated and managed as part of a comprehensive management plan for any property in which wildlife viewing or hunting is an objective.

What are the different types of food plots?
What plants you provide in a food plot is largely determined by what species of wildlife you are interested in attracting. If you are interested in attracting white-tailed deer, which is quite often the wildlife species for which most food plots are planted, plants that provide green browse throughout most of the year would be recommended. The most popular green browse plants are typically forage plants and include clovers and wheat. Other green browse options might include soybeans, alfalfa, brassicas, turnips, kale, rye, oats and triticale, among others.

Wild turkeys will also use green browse plots, especially during the spring. Due to the short growth stature of green browse plots in the spring, male turkeys will often use these areas for strutting. Hen turkeys will bring broods to food plots of clover or other legumes for “bugging.” These areas are often high in insect biomass, providing an abundant and easily accessible food source for growing turkey chicks.

Agricultural grains are often planted for small game wildlife, including northern bobwhites, ring-necked pheasant and eastern cottontails. Grains like milo (or sorghum), sunflowers and corn are popular for small game food plots. Eastern cottontails will also readily use green browse plots if there is dense shrubby cover close by to escape predation. Sunflowers are usually planted specifically for hunting mourning doves. Grain food plots will also attract many nongame wildlife, especially songbirds. A mature sunflower field will often be full of American goldfinches, indigo buntings, chipping sparrows and song sparrows.

When should food plots be planted?
When food plots should be planted depends on what plants you will be planting. Most of the agricultural grains should be planted in the spring. Typically April and May are best for spring planted grains. Exact timing for spring planting is not as critical for food plots as it is for agricultural production. For example, soybeans can be planted in late June or even early July as a food plot. Soybeans planted for food plots are usually to provide green browse through the summer rather than bean production for harvest. Although late planted soybeans may not grow as optimal as earlier planted beans, they can still enhance the nutritional quality of summer forage for deer. Green browse plots for winter forage, including wheat and clovers, are usually planted in late summer through early fall. Clovers can also be planted in late winter or early spring.

Are food plots expensive?
Food plots vary in their expense to establish. Much of the expense depends on what you plant, equipment costs, herbicides and soil amendments. The expense really boils down to how much effort you want to put in the food plot and how successful you want it to be.

Seed costs vary considerably. Some conservation organizations, like Quail Forever and Pheasants Forever, offer free seed for its members to plant grain food plots. You might check with a local agricultural seed dealer or Ag co-op for availability of old seed. Older seed is not usually sold for agricultural production, and seed dealers may be willing to make a deal to get it out of their storage facilities. Some seed suppliers can provide additional services such as mixing your seed order for a small fee to save you time in the field. Of course, there are also the name brand seed varieties available through many sporting goods stores; however, they are usually much more expensive.

Equipment can be a considerable expense for planting food plots. Small tractors and utility vehicles can be quite expensive alone. Then you will need the implements to do the job, such as discs, planters, sprayers and possibly tillers or cultivators. If you lease part of your land for farming, you might be able to negotiate food plot work as part of the contract. Some Soil and Water Conservation Districts have implements, especially grain drills, available for loan at a small fee or deposit. Some equipment can be rented from rental supply companies. There are also individuals who specialize in food plot establishment and other habitat management projects available for hire.

Expenses associated with food plot preparation should be considered during the planning process. You will likely need to control undesirable vegetation with herbicides. Fertilizer may be necessary, and fertilizer costs fluctuate yearly. You may even have to consider exclusion of wildlife during the establishment phase, especially where deer are extremely abundant. Fencing for exclusion can be a considerable cost.

What are the basic steps in establishing a food plot?
The first step in food plot planning is to consider your objectives for having a food plot. Are you a hunter wanting to attract game to increase your hunting success? Are you interested in bringing wildlife closer to you and your family for viewing and enjoying?

Once you have determined your objectives, you need to determine the location(s). If you are planting for viewing only, where do you intend to view from? A back deck or perhaps from your living room or kitchen with large windows? You will need to consider the movement patterns of wildlife through the landscape, especially if hunting is your objective. Wildlife are more likely to utilize food plots when they are planted in areas through which they are already moving. It can be difficult to attract wildlife to an area they do not otherwise occupy unless you intend to address other habitat needs, especially cover requirements. If you are hunting, you will also want to consider wind patterns that will impact your movement into and out of the food plot during hunting. Providing multiple food plots increases hunting opportunities.

Site preparation is determined by several factors, including the amount of undesirable vegetation you will have to treat with herbicides, soil tests and planting method. If the site you have selected contains a large amount of herbaceous vegetation, you will want to consider using herbicide to kill as much of the competing vegetation as possible. Which herbicide needed depends on the nature of the plants you will control. A general herbicide most people use is glyphosate. If you have mostly grass to control, then a grass-specific herbicide can be used. If you need to control mostly broad-leaved plants, then a broad-leaf specific herbicide can be used. It is critical that before you use any herbicide, you read and follow all label directions.

A soil fertility test should be conducted for each food plot in order to determine if any of the essential soil elements are lacking and in need of amendment. The basic test will provide information on soil pH, plus the amounts of nitrogen, phosphorus, potassium and lime (calcium) that should be added. The folks at your county Extension or Soil and Water Conservation offices will provide you with the information you need for soil sampling and submission for testing. After you receive the test results, it is up to you on whether you want to amend the soil as per the test recommendations. Factors to consider are cost of the amendments and the desired vigor of the crop you plant. The more vigorous the crop, the more nutritional value it will have.

The planting method you choose will dictate how much soil work will be necessary. If you will be using a no-till drill, then you will be able to drill your seed directly into the soil through vegetation without disking it first. If you are using a conventional drill or broadcasting the seed, you will need to disk the soil prior to planting. If broadcasting, you will want to make another pass over the field with a cultipacker, harrow or other drag to lightly cover the broadcasted seed.

Annual plants, such as agricultural grains, will need to be planted every year. You could lightly disk a field of annual grains following seed set and perhaps get a second growing season from the seed production, assuming all the seeds have not been consumed. You could also leave the field fallow the next year, which means do nothing with it and let it go without disking or spraying. Either way will result in some germination of the previous year’s seed production along with annual weeds. The annual weeds are likely to be of good value for wildlife. Invasive weeds, such as Canada thistle, should be controlled with herbicide. Keep in mind that ragweeds and foxtail, while agricultural weeds, are highly valued by wildlife who consume seeds.

Other food plot plants, such as many clovers, are short-lived perennial plants and do not usually need to be planted every year. Once established, many clovers can be mowed periodically to maintain a vigorous growth. It would be beneficial to allow the perennials to produce seed to help maintain the field. Reseeding perennial plants may be necessary where browse pressure by deer is excessive.

Are there negatives associated with food plots?
There are not many negative impacts of food plots on wildlife. Two that could potentially impact wildlife are disease and predation. Any time you concentrate animals, you increase the risk of communicable disease transmission and predation. These negatives can be reduced through vigilant observation of your plots and habitat management. If you do notice a disease problem, then you may want to take the plot out of production for a year or two to reduce the concentration of animals. Disease transmission associated with food plots is rare.

Anytime you concentrate a food resource, you attract animals that eat that food, and this logic follows on up the food chain. If you plant milo, you will attract northern bobwhites and other birds. This, in turn, will attract predators of those birds. You can reduce predation by providing adequate escape cover in close proximity to the food plot.

What resources are available to help with food plots?
One of the best resources available for wildlife habitat management, including food plots, is your local District Wildlife Biologist from the Indiana Department of Natural Resources. The District Wildlife Biologist will be able to assist you in meeting your land management objective, especially as it relates to wildlife habitat. They will also be able to determine if your wildlife management objectives qualify for any cost share opportunities. If you are not in Indiana, your state’s natural resource management agency will also have a team of wildlife biologists dedicated to assisting landowners.

Another source of information is the Cooperative Extension Service. All states have Extension Wildlife Specialists housed within a Land Grant university that can provide you with information on managing wildlife habitat. Your county Extension Educator/Agent will also be able to provide you with information. The University of Tennessee Extension Service has several food plot resources available that are applicable throughout the eastern United States, including the book, A Guide to Successful Wildlife Food Plots: Blending Science with Common Sense (8MB pdf). For more resources, view Food Plots from The University of Tennessee Extension.

There are many books about food plots available from online bookstores. You can also get information about food plots from non-profit conservation organizations such as Whitetail’s Unlimited, Quality Deer Management Association, Pheasants Forever, Quail Forever, Duck’s Unlimited, etc. If you use the Internet for information, look for information from organizations previously listed, from government natural resource agencies and the Cooperative Extension Service.

Don’t forget to ask neighbors, friends, hunters and others with similar interests from your area. They may be experienced with planting food plots and, from my experience, enjoy talking about their experiences. They can be a wealth of knowledge, especially in regard to what will grow and what will not in your area. They may also be willing to help you with the planting of your plots!

If you have any questions, please feel free to contact Jarred Brooke, extension wildlife specialist, at jmbrooke@purdue.edu.

Resources
Indiana’s District Wildlife Biologist, Indiana Department of Natural Resources
Food Plots for White-Tailed Deer, The Education Store
The Basics of Managing Wildlife on Agricultural Lands, The Education Store
How to Score Your White-tailed Deer, video, The Education Store, Purdue Extension Resource Center
White-Tailed Deer Post Harvest Collection, video, The Education Store

Jarred Brooke, Wildlife Specialist
Department of Forestry and Natural Resources, Purdue University


Posted on July 25th, 2014 in Forestry, How To | No Comments »

This appears to be Northern Tooth Fungus, but I would need to look at it more closely for certain identification. This fungus causes a heart rot on maples and other trees. In most cases, the tree has to be tested for the extent of the decay. Presence alone of the fruiting bodies is usually not reason for removal; however, it should be reviewed by a certified arborist for risk assessment.

Resources
Northern Tooth Fungus-Climacodon septentrionale, Department of Biology, University of Wisconsin
Indiana Certified Arborists, International Society of Arboriculture

Lindsey Purcell, Urban Forestry Specialist
Department of Forestry and Natural Resources, Purdue University


Posted on July 17th, 2014 in Forestry, How To | No Comments »

A girdling root is one that circles the base of a tree at or just below the surface. Girdling roots can also girdle other roots but without harm. The most commonly affected species are maples, lindens and ashes.

The threat of a girdling root depends on two major factors, the size of the root and the amount of circumference affected on the tree. The expansion of the root and the stem squeezes them against each other, interfering with the transport of water, nutrients, sugars and other necessary compounds. Eventually, there may be damage which reduces vigor and often leads eventually to whole stem failure.

The only sure sign is to see a root circling the main stem at or crossing other roots at or just below the soil surface. Typically, roots should grow laterally, away from the trunk. Poor root systems grow horizontally, across each other and the main stem at the root flare. Look for a crossing network of roots near the trunk or larger woody roots growing horizontally. It may be helpful to gently displace the soil at the tree base to see if a circling root lies just under the soil surface.

Common symptoms include one side of the trunk flattened, marginal and/or tip scorching on the leaves, crown discoloration or dieback. However, many of these symptoms can be caused by other factors such as root damage, flooding or wilt diseases.

Treatment should be conducted by a qualified, International Society of Arboriculture Certified Arborist who understands the proper protocol for root surgery. This is done by the use of a saw or chisel to sever the girdling root. Arborists who remove stem girdling roots as part of their regular tree care program report that roots can be removed until their total cross sectional area is 25 percent of the trunk cross sectional area at 4.5 feet from the ground. Root severance is very serious work that requires knowledge and experience but can be done successfully in the right situations and especially prior to worsening conditions.

Resources
The Education Store (Search keywords to find the resources you need)
When Tree Roots Surface, Purdue Yard & Garden News

​​Lindsey Purcell, Urban Forestry Specialist
Department of Forestry and Natural Resources, Purdue University


Posted on July 15th, 2014 in Forestry, How To, Woodlands | No Comments »

Timber with sunshine coming through trees.​Woodland owners seem to have a lot to worry about these days. Threats to the health of their woodlands are announced regularly as new insects or diseases are detected, drought rages or invasive plant species compete with native vegetation. Some threats, like the emerald ash borer or a large tornado, can result in nearly unstoppable destruction. However, there are some actions that woodland owners can take to make their woodlands more resistant to other damaging agents or events. One of the best preventative measures is to use forest management practices to make the trees in your woodland as healthy and vigorous as possible. Competition between trees is a natural part of forest growth and development, but excessive competition as trees become more crowded and fight for growing space can make trees more susceptible to attack by insects and diseases and damage by weather extremes like droughts. Thinning around desirable trees provides additional growing space and reduces stress on these trees. Thinning can be done by harvesting trees for firewood or other personal use products, selling trees in a timber sale, or felling or girdling trees to be left for wildlife habitat. Gradual thinning in your woodland helps maintain the vigor of the remaining trees much like thinning carrots in a garden result in larger, faster growing carrots.

Vines and invasive plants can also create problems for tree health. Some vines, like wild grape, kudzu and Asian bittersweet, can climb over the crown of the tree, covering the leaves and reducing growth and vigor, and in some cases, killing the tree. Trees with large vines in their crowns may also be more susceptible to damage during wind, snow or ice storms, due to the extra weight of the vines. Cutting vines that climb into desirable trees is a good way to protect their health. Invasive plants like Asian bush honeysuckles and tree-of-heaven can become serious competitors with native forest trees and shrubs for space, water and nutrients required for tree growth and regeneration. Heavy infestations of invasive plant species can even change the soil environment, making it more difficult for trees to regenerate. Controlling invasive plants in your woodland is an important step in encouraging long-term woodland health.

Professional foresters and arborists can help you manage the health of your woodland. You can find professional foresters through the website findindianaforester.org or from the Indiana Division of Forestry.

The Education Store, available through Purdue Extension, has many resources available to help you manage your woodlands. Just place the keyword “woodland” in the search field box.
Forest Improvement Handbook.

Resources:
Resources and Assistance Available for Planting Hardwood Seedlings, The Education Store, Purdue Extension’s resource center
Creating a Wildlife Habitat Management Plan for Landowners, The Education Store
How to Build a Plastic Mesh Deer Exclusion Fence, The Education Store
Planting Forest Trees and Shrubs in Indiana, The Education Store
Shrubs and Woody Vines of Indiana and the Midwest, The Education Store
Investing in Indiana Woodlands, The Education Store
Woodland Stewardship for Landowners Purdue Extension – Forestry & Natural Resources (FNR) Extension YouTube Playlist
ID That Tree, Purdue Extension-FNR YouTube playlist
Woodland Management Moment , Purdue Extension-FNR YouTube playlist

Lenny Farlee, Extension Forester
Hardwood Tree Improvement and Regeneration Center (HTIRC)
Forestry and Natural Resources, Purdue University


Posted on July 14th, 2014 in Forestry, Wildlife | No Comments »

deer, hunting deer-damaged forests gives IN state parks a shot at recovery ​The National Association of State Foresters (NASF) posts an Purdue Agriculture research article titled “Hunting Gives Deer-Damaged Forests in Indiana State Parks a Shot at Recovery.” The Purdue research team led by Michael Jenkins, associate professor of forest ecology, shares that a 17-year-long Indiana Department of Natural Resources policy of organizing hunts in state parks has successfully spurred the regrowth of native tree seedlings, herbs and wildflowers rendered scarce by browsing deer.

“We can’t put nature in a glass dome and think it’s going to regulate itself,” Jenkins said. “Because our actions have made the natural world the way it is, we have an obligation to practice stewardship to maintain ecological balance.”

Resources
Electric Fences for Preventing Browse Damage by White-Tailed Deer, The Education Store, Purdue Extension
Emerging Issues in White-Tailed Deer Management and Conservation, The Education Store, Purdue Extension
Corn and Soybean Crop Depredation by Wildlife, Purdue Extension


As hellbenders continue to decline, Dr. Rod Williams and his research team have been sharing awareness of how important it is that these salamanders continue to thrive in the current ecosystem.

Mesker Park Zoo and Botanic Garden zookeeper, Bryan Plis, places a wild Eastern Hellbender into the new breeding raceway

Eastern hellbenders are the largest salamander in North America. Adults can reach 29 inches in length, though most individuals are typically 11-24 inches long. Clean water is important for Hellbenders because they obtain most of their oxygen from the water by “breathing” through their skin. When breathing, their fleshy folds expand in surface area, enabling them to absorb more oxygen from the water.

Hellbender populations are declining across their range, from Missouri to New York. This decline, which affects the hellbender population in Indiana’s Blue River, is likely caused by human influences such as habitat degradation and destruction. The stream-bottom habitat of hellbenders can be degraded by sediment from eroded banks and fields and destroyed when streams are dammed or dredged. Hellbenders are also captured inadvertently by anglers or purposefully for illegal sale in the pet trade. Finally, emerging diseases may be impacting some populations of hellbenders.

Many states are developing conservation programs to help the hellbender. For more information and to learn more on conservation efforts, view Help the Hellbender.

Dr. Rod Williams and his hellbender research team have recently made national news:

CBS News
Trying To Save The Hellbender, America’s Largest Salamander
July 10, 2014

Resources:
Help the Hellbender Facebook page
Ask the Expert: Learn All About Hellbenders and Take a Tour, Subscribe Purdue Extension – Forestry & Natural Resources (FNR) YouTube Channel
Ask the Expert video: Help the Hellbender – Dr. Stephen Spear of The Wilds, Purdue Extension – FNR YouTube Channel
Ask the Expert video: Live with Mesker Park Zoo and Botanical Gardens – Hellbenders, Purdue Extension – FNR YouTube Channel
A Moment in the Wild video: Hellbender Hide, Purdue Extension – FNR YouTube Channel
A Moment in the Wild video: Release Moment of Hellbenders,
How Anglers and Paddlers Can Help the Hellbender video, Purdue Extension – FNR YouTube Channel
Eastern Hellbender ID Video, Purdue Extension – FNR YouTube Channel
Hellbenders Rock!, The Education Store, Purdue Extension’s resource center
Help the Hellbender, North America’s Giant Salamander, The Education Store
How Our Zoos Help Hellbenders, The Education Store
The Nature of Teaching: Adaptations for Aquatic Amphibians, The Education Store
Healthy Water, Happy Home – Lesson Plan, The Education Store
Purdue Expert: Hellbender Salamander, Purdue University News YouTube Channel
FNR Assists in First Natural Breeding of Eastern Hellbender in Captivity, Purdue FNR News & Stories
Helping the Hellbender: Mesker Park Zoo Begins Captive Breeding Efforts, Purdue Agriculture News

Rod Williams, Professor of Wildlife science and Assistant Provost for Engagement at Purdue University
Department of Forestry and Natural Resources, Purdue University

Diana Evans, Extension Information Coordinator
Department of Forestry and Natural Resources, Purdue University


​Logs need to be at least 8 inch diameter inside bark small end, at least 8 feet long and straight and sound. Good grade logs do not develop until you get into at least the 14 inch diameter range and up. To be commercial, you will need at least a semi load. The issue here is hauling as well as the need to have a loader to load the semi.

If the above is not an option, you might go to the Wood-Mizer website and search for a sawyer. You will likely find one that would saw the logs for you and maybe one that would be interested in smaller quantities of logs.

You might also check with any local sawmill operation or district forester.

Resources
Wood-Mizer (Find a local portable sawmill service)
Indiana District Foresters
Forestry and Natural Resources Extension Workshops (Hardwood Lumber workshop)
The Education Store (Search the keyword “lumber” to find a large list of resources)

Dan Cassens, professor of wood products
Department of Forestry and Natural Resources
Purdue University


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