By Leona Baker 触听 March 31, 2011
To refer to a person as a 鈥渨orm鈥 is not particularly flattering. On the contrary, it means you think that person is a pathetic, contemptible wretch. But what did worms鈥攖he wriggling kind鈥攅ver do to deserve such a reputation? It turns out we have worms to thank for the very ground we walk on and even the food we eat.
Certain kinds of worms help decompose plant materials and aerate the soil we count on to grow things. Their role in agriculture is so important that Cleopatra declared them sacred and made their removal from Egypt punishable by death. Darwin even wrote a book on the wondrous work of worms: The Formation of Vegetable Mould through the Action of Worms.
鈥淓very year worms are turning over the entire surface of the earth; it鈥檚 incredible to think about that,鈥 says Dr. Philip Rock, Associate Professor of Biology at Virginia Wesleyan College.
Last year, Rock was awarded the annual President's Environmental Challenge Grant for his proposal to establish a 鈥渨orm farm鈥 at VWC, and he鈥檚 happy to report that his nascent assemblage of Red Wigglers and European Night Crawlers鈥攖wo of the best species for worm farming鈥攁re thriving. They鈥檙e busy doing what they do best: eating, pooping and making baby worms.
Why should we care? Well, worms can process about half of their body weight in food every day, Rock explains. In a matter of a couple of months they can transform a bucket of vegetable waste and other natural materials into 鈥渂lack gold,鈥 an incredibly nutrient-rich and chemical-free soil much sought-after by organic farmers and anyone looking to best their neighbor with the fattest, juiciest summer tomato on the block.
Vermicomposting, as it鈥檚 called, is much faster than traditional composting鈥攚hich can take as long as six months to produce usable material. The resulting soil also has many advantages including increased healthy microbial activity, improved water holding capability and decreased susceptibility to pests and disease. Plus, worm farming is a fairly inexpensive, low-tech process.
Dr. Rock began his worm collection several months ago with about 50 wigglers. He now estimates he has between 700 and 800 worms (apparently rabbits have nothing on worms) in a series of stacked 15-gallon plastic bins鈥 鈥渨orm condominiums鈥濃攈oused in a subterranean storage area beneath Blocker auditorium on the VWC campus. The location is just right, says Rock.
鈥淚t鈥檚 ideal for worm composting because it always stays about the right temperature鈥攏ot too hot, not too cold鈥攁nd it鈥檚 dark.鈥
A college campus also turns out to be a great place for worm food.
鈥淭he dining hall is always producing food waste,鈥 Rock says. 鈥淭hey eat potato peels, baby corn, celery, tomatoes, sometimes noodles, as long as it鈥檚 fairly finely chopped. These worms eat better than I do.鈥
He starts his bins off with a mixture of food waste, bedding material like shredded paper or cardboard, and dried leaves collected from around campus. He lets that sit for a while before adding the worms. The wormy mixture has to be stirred and drained occasionally. After a couple of months, the worm castings, AKA soil, can be scraped off and the worms returned to a new batch of waste.
The idea is to use the resulting soil in the flower beds and gardens on the VWC campus as an environmentally friendly and less costly alternative to traditional fertilizers. In general, composting helps reduce food and yard waste, which accounts for sixty percent of household waste. It also combats the loss of topsoil, a primary environmental concern.
鈥淚t鈥檚 all for the sake of recycling and composting,鈥 says Rock.
Rock hopes his initial success with the VWC Worm Farm will lead to an expansion of the program. He has recently enlisted a student assistant, junior biology major Megan Cunningham, to help.
The first VWC President's Environmental Challenge Grant was awarded in 2007, part of a larger campus sustainability initiative, designed to heighten awareness of environmental issues among Virginia Wesleyan's faculty, staff and students and to make Virginia Wesleyan a more environmentally friendly place.