Got Nature? Blog

Posted on October 6th, 2016 in Alert, Plants | No Comments »

screen-shot-2016-10-06-at-2-29-37-pmGenetically Modified Organisms, or GMOs, is a topic that continues to be in the news and yet  many of us know relatively little about this topic. We want to know what we’re eating, and we want to know how this topic is impacting the environment. Knowing more equips us to make the best decisions for ourselves and generations to come. That’s why The Science of GMOs website was created, to help break down the information and address some of the most important questions and concerns that many have. You can always count on this site to address this complicated and evolving issue with neutral, scientifically sound information.

Submit a question by visiting The Science of GMOs website: https://ag.purdue.edu/GMOs.

Resources:
GMO Issues Facing Indiana Farmers in 2001, The Education Store
Grain Quality Issues Related to Genetically Modified Crops, The Education Store
Field Crops: Corn Insect Control Recommendations – 2015, The Education Store
Indiana Vegetable Planting Calendar, The Education Store

Purdue Agriculture


Ornamental plants provide many environmental and ecological benefits to landscapes and urban areas. They can be aesthetically pleasing, reduce stormwater Invasive Plant Species, pear treerunoff, lower carbon dioxide and pollutants, alleviate the urban “heat island” effect, and provide habitats to pollinators, birds, and mammals. Unfortunately, a few of these landscape species can escape into wild areas and create ecological problems in unintended areas such as forests and woodlands.

The Indy Star shares article titled, “Bradford pears and other backyard bullies to avoid in Indiana” listing some of the invasive species that are taking over Indiana woodlands. If you are planning on adding trees or shrubs to your property this spring, you will want to view this article before planting.

Author:
Cara Anthony, cara.anthony@indystar.com
Release date of article April 2, 2016.
IndyStar

Resources from The Education Store, Purdue Extension Resource Center:
Commercial Greenhouse and Nursery Production: Alternative Options for Invasive Landscape Plants
Invasive Plant Species in Hardwood Tree Plantations
Invasive Plant Species Fact Sheets: Poison Hemlock
Mile-a-minute Vine
Native Trees of the Midwest
Shrubs and Woody Vines of Indiana and the Midwest: Identification, Wildlife Values, and Landscaping Use

Videos:
Invasive Plant Species: Callery Pear
Invasive Plant Species: Oriental Bittersweet
Invasive Plant Species: Wintercreeper


Posted on March 8th, 2016 in Invasive Plant Species, Plants | No Comments »

Oriental Bittersweet videoPurdue Extension-FNR now has two new expert-reviewed videos to help spread awareness of two significant invasive plant species in Indiana: the oriental bittersweet  and wintercreeper. These videos share plant characteristics, their effect on forests, and alternative native species that can be utilized.

Oriental bittersweet is a vine that was brought over from Asia in the 1960’s. It is a pleasant looking plant that is popular in landscaping and home decor items. However, they can be harmful to trees as they wrap around them and cut off their access to light and are also problematic on the forest floor.

Wintercreeper was brought over as an ornamental ground cover in 1907 and is still planted for landscaping today. As birds eat its seeds, wintercreeper spreads from urban areas into the forests where it grows earlier in the spring than native plants and prevents new growth from emerging.Wintercreeper video

Check out the oriental bittersweet and wintercreeper videos to learn more about these invasive species and to how to join the fight to stop them from spreading further.

Resources:
Invasive Plants of the Eastern U.S.: An Introduction to the Problematic Non-Native Species – The Education Store
Invasive Plants – Purdue University, Department of Botany and Plant Pathology
Invasive Plants – Indiana Invasive Species Council
Purdue Extension-FNR Internship Program – Purdue University, Department of Forestry and Natural Resources

Danny Thomas, Purdue Extension-FNR intern
Purdue University Department of Forestry and Natural Resources

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


Posted on December 11th, 2015 in Forestry, How To, Plants | No Comments »

Indian Creek Video 1​Since 2010, farmers in the Indian Creek watershed in Illinois have been working together to implement conservation practices and nutrient management strategies to reduce nutrient loading in Indian Creek. Postdoctoral Research Associate Sarah Church led the process of evaluating this watershed project and understanding which social conditions contributed to the project’s success. Her findings are presented in this new publication “Indian Creek Watershed Project: Key Takeaways for Success.”

In continuing sharing the research regarding the issues of Indian Creek Purdue Extension’s Aaron Doenges produced two videos. These videos focus on two key reasons for the project’s success: the people involved with the project’s steering committee; and the partnerships formed with agribusinesses.

Indian Creek Video 2In the first video, “Partnerships and People“, Terry Bachtold of the Livingston County Soil and Water Conservation District, Chad Watts of CTIC, and several others involved in the watershed project, talk about how crucial forming a locally-led steering committee was to the project’s success. Partnerships led to friendships as the group worked together to make a difference in their watershed.

In the second video​, “Partnerships with Agribusinesses“, agronomists Harold Reetz, Marion Shier, and other people involved in the watershed project discuss the importance of getting retailers like Mike Trainor involved. Agribusinesses are trusted farmer advisors, provide unique insights, and offer valuable support that can strengthen watershed projects.

Indian Creek Watershed Project: Takeaways for Success” and the accompanying videos can provide watershed and conservation organizations with valuable insights for their own watershed projects. Moreover, farmers and retailers are encouraged read this publication, view these videos and consider becoming part of something bigger. As members of a watershed join together, economic and environmental improvements can take place.

Resources:
Indian Creek Watershed Project: Takeaways for Success​ – The Education Store, Purdue Extension Resource Center
Indian Creek Watershed Project – Conservation Technology Information Center (CTIC)
Indian Creek Watershed Project – Reetz Agronomics
Indian Creek Watershed Project Presentation – United States Environmental Protection Agency
A Watershed Approach – United States Environmental Protection Agency

Sarah P. Church, Post Doctoral Research Associate
Purdue University, Department of Forestry and Natural Resources


Posted on November 11th, 2015 in Forestry, Plants | No Comments »

Tulip PoplarTulip poplar (Liriodendron tulipifera) is one of the largest trees in Indiana and the eastern portion of the country. Tulip poplar reaching heights in excess of 50-60 m (160-200 ft) with a diameter at breast height (dbh) of 3 m (10 ft) have been reported while the majority of these eastern giants are between 20-30 m (70-100 ft) tall. This tree is fast-growing, has few health problems, and can live upwards of 200 years.

The tree looks best between April and June when it begins to flower as it is covered with large pale green to yellow flowers with an orange band encircling the tepals. These flowers are brimming with nectar and draw in large quantities of bees, birds, and butterflies. The tree has been deemed so magnificent that it is the state tree of Indiana, Kentucky, and Tennessee.

American ginseng (Panax quinquefolius) is an herbaceous perennial member of the ivy family that has traditionally been used in North America by Native Americans for its medicinal properties and cultivated in China for use in herbal remedies. In years past, American ginseng was widespread throughout the eastern United States until overharvesting, habitat fragmentation, urbanization, and deer browsing decimated wild populations.

Though not scientifically proven, ginseng is believed to remedy numerous health conditions such as inflammation, the flu, cancer, insomnia, erectile dysfunction, and hangovers. The herb has become one of the most popular unproven remedies in the world.

A new study noted that wild populations of American ginseng could benefit from being planted near tulip poplar. The data stated that new strategies need to be pursued in conservation efforts to save the rare American ginseng plant. The study advised that planting American ginseng on sites equally suited to tulip trees had the potential to increase outplanting success. The authors recommended planting in isolated, mostly closed canopy areas free of disturbances (trespassers, timber harvesting, large deer populations) and against planting in sites with wild sarsaparilla (Lindera benzoin).

Resources:
Ginseng: Old Crop, New Directions​ – Purdue University Department of Horticulture
Ginseng​ – Indiana Department of Natural Resources
American Ginseng – U.S. Fish & Wildlife Service
Liriodendron tulipifera – The IUCN Red List of Threatened Species
Can putative indicator species predict habitat quality for American ginseng? – ScienceDirect – Science Direct

Shaneka Lawson, Plant Physiologist
Purdue University Department of Forestry & Natural Resources


Posted on November 9th, 2015 in Alert, Forestry, Got Nature for Kids, Plants | No Comments »

Ginkgo Tree​Ginkgo (Ginkgo biloba) trees also known as Maidenhair trees are slow-growing, relatively pest-free, wind-pollinated trees that can be found in all fifty of the contiguous United States. The only tree species within division Ginkgophyta to escape extinction, Ginkgo biloba is known as an ancient tree with prehistoric fossils dating back 270 million years found on every continent except Antarctica and Australia.

Ginkgo grow best in full sunlight and can reach heights greater than 35 m (115 ft). Ginkgo trees are valuable street trees because of their low susceptibility to smoke, drought, or low temperatures. These trees grow slowly and perform relatively well in most soil types provided they are well-drained. The leaves turn a vibrant​ yellow during autumn but drop soon after its brilliant fall color is observed.

Unfortunately, in late autumn, the dirty secret that female ginkgo trees hide is revealed. The “fruit” produced by female ginkgo trees is foul smelling (has been compared to rancid butter or animal excrement) and is cast in the fall following the first frost. Though immature when cast, the embryos within the fruit continue to mature on the ground for up to two months afterwards. This means that anyone unfortunate enough to step on the fruit during that time is exposed to its pungent odor.

Extreme caution should be used when selecting ginkgo trees for landscape ornamentals or for street trees since there is no way to discern a male from a female at the seedling stage. Several “Boys Only” cultivars have been developed such as ‘Autumn Gold’ or ‘Lakeview’ to ensure that you do not end up with a Ginkgo Stinky Seedsstinky yard or street when the trees begin to fruit. While the scent of the seed coat may be undesirable, the seed kernel is highly valued in Eastern Asia as a food product. In the United States, herbal extracts composed of ginkgo leaves are believed to improve short-term memory and concentration.

On the campus of Purdue University several ginkgo trees can be found although unfortunately for students the vast majority of these are female and the scent of crushed seed pods often follows many students to class on the bottoms of their shoes. A word of warning, the ginkgo trees planted near Pfendler Hall, Forestry, and the Cordova Center are all females. Watch your step this winter and this is the one rare example of when boys ARE better than girls.

Resources:
Ginkgo biloba​ – Purdue Arboretum Explorer
Ginkgo – Encyclopedia.com
Ginkgo biloba L. – USDA Forest Service

Shaneka Lawson, Plant Physiologist & Adjunct Assistant Professor
Purdue University Department of Natural Resources


Posted on August 10th, 2015 in Gardening, Plants | No Comments »
Redbud Pansy Tree

Photo credit: Purdue Arboretum

In July’s column of Purdue Yard & Garden News, Purdue Extension Consumer Horticulturist B. Rosie Lerner discusses several types of purple plants that could spice up your landscape, from small shrubs like Weigela and Ninebark to larger trees like Purple-leaf European Beech and Redbud Forest Pansy.

Resources
The Purple Landscape, Purdue Yard & Garden News
News Archive, Purdue Yard & Garden News
Purdue Master Gardener Program, Purdue Horticulture

B. Rosie Lerner​
Extension Consumer Horticulturist, Purdue Extension


Purdue Boat

Photo credit: Tom Campbell

As boats enter and exit public bodies of water, they risk transferring aquatic plants, mussels or invertebrates that attach themselves to the bottom of the boat. While this might seem pretty harmless at first, this spreading of aquatic species runs the risk of introducing invasive species into new environments.

Invasive species cause harm to local ecosystems by reproducing exponentially when they are outside of their usual habitat and the organisms that keep their populations in check. They can then cause great damage by feeding on local species and the food they depend on. Once an invasive species is detected, it is oftentimes very expensive and difficult to control. For example, around 1991, the U.S. and Canada spent an estimated $20 million per year to control invasive sea lampreys and restore the trout populations that were damaged by them. In Indiana alone, we spend around $800,000 a year to attempt to control the growth of Eurasian watermilfoil, another nuisance invasive species.

In an attempt to avoid more cases like this in the future, the Indiana Department of Natural Resources (INDNR) is looking for help. Volunteers can sign up to record information about boats and their potential aquatic hitchhikers entering and leaving lakes during times of heavy use. The DNR Division of Fish and Wildlife can take this data and use it for public outreach and planning species management.

Those interested are highly encouraged to sign up on INDNR’s Volunteer Program page.

Resources
Aquatic Invasive Species (AIS), Indiana Department of Natural Resources
DNR Seeks Help Gathering Info on Spread of Aquatic Species, WFYI
Indiana Invasive Species Council, Purdue Entomology Extension
Invasive Plants, Purdue Agriculture Weed Science
The Education Store, Purdue Extension Resource Center (search “invasive”)

Indiana Department of Natural Resources


Posted on July 24th, 2015 in Plants, Urban Forestry | No Comments »

BiowallWe all know that trees help to improve our air quality. Absorbing toxins, reducing CO2 levels and providing shade are well-known benefits of trees, and many initiatives are in place to increase urban forested areas. However, there is an interesting fact to consider. According to the U.S. EPA, the average American spends 90% of their time indoors, where those benefits of outdoor trees aren’t nearly as impacting. In fact, pollutants are estimated to be two to five times higher indoors than outdoors and account for several billion dollars of health costs nationally. Indoor air needs to be cleaned too. This is the problem that Purdue’s BioWall team hopes to solve.

The project began in 2009 as part of a fully self-sustainable house called the INhome. In 2011, INhome competed against 20 other teams in the United States Department of Energy’s Solar Decathlon and scored second place, largely due to its most distinguishable feature, the BioWall. The BioWall was integrated into the return duct of INhome’s air conditioning system, filtering the air inside the home through the roots of golden pothos and other species of ivy that are known to have a strong effect on air quality.

Today, the BioWall team is in the process of testing out an updated version of the BioWall. Prototype designs are being tested to improve the air cleaning qualities as well as the lifespan of the plants. Bypass tubes are being implemented to lessen the amount of air passing over the plants’ roots, allowing them to dry out slower and live longer. Eventually, the team would like to put out a consumer version in the next few years for about $2,000. It’s a lofty goal, but the team believes they can succeed and bring affordable and self-sustaining indoor air cleanliness to homes around the world.

For more information, check out the BioWall team’s website.

Resources
BioWall, Purdue University
Office of University Sustainability, Purdue University
Questions About Your Community: Indoor Air, United States Environmental Protection Agency

William Hutzel, Professor of Mechanical Engineering Technology
Purdue University


Poison Hemlock

Photo credit: Pedro Tenorio-Lezama, Bugwood.org

Made infamous through the trial of Socrates, Shakespeare’s Hamlet and Macbeth, and several other works of classic literature, poison hemlock is an extremely toxic plant that will pose a risk this summer and should be handled with caution.

Poison hemlock is a biennial plant, meaning that it has a two year lifespan. Last summer, it went through vegetative growth and largely stayed out of sight. This summer, it will produce small white clusters of flowers and will be more likely to catch the attention of animals and people. Poison hemlock is a member of the parsley family and can sometimes be confused with wild carrot. However, its distinguishing feature is its hairless hollow stalks with purple blotches. If you see these, be careful!

The biggest risk with poison hemlock is ingestion. Lethal doses are fairly small, so it is important for animal owners or parents of young children to identify it in their area and remove it if possible. The toxins can also be absorbed through the skin and lungs, so be sure to wear gloves and a mask when handling these plants.

Symptoms of hemlock poisoning include dilation of the pupils, weakening or slowing pulse, blue coloration around the mouth and eventually paralysis of the central nervous system and muscles leading to death. Quick treatment can reverse the effects, so act quickly.

Resources
Invasive Plant Species Fact Sheets: Poison Hemlock, The Education Store, Purdue Extension Resource Center
Recognizing and Managing Poison Hemlock, Purdue Landscape Report
Poison Hemlock, Pest & Crop Newsletter, Purdue Extension – Entomology
Hemlock Woolly Adelgid: Distribution Update, Purdue Landscape Report
What are Invasive Species and Why Should I Care?, Purdue Extension – Forestry and Natural Resources (FNR)
Indiana Invasive Species Council
Report INvasive, Purdue Extension & Indiana Invasive Species Council
Poison Hemlock (Conium maculatum), United States Department of Agriculture (USDA)

Purdue Extension


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