Genetically modified organisms, or GMOs, have spread throughout the world since they were first planted in U.S. soil in 1996 (Q and A). There are currently nineteen genetically modified crops approved by the USDA, eight of which are produced in the U.S (Johnson and O’Connor). Sometimes dubbed “frankenfoods”, gmos have managed to engender fear and distrust from their inception. They have been accused of causing autism, cancer, and diabetes. While scientific research continues to illegitimize the majority of these human health worries, GMOs still face steep opposition, and that opposition is not totally unfounded (Freedman). The ways that genes interact with each other is still not completely understood, and neither are the ways that new plants might affect their surrounding ecosystems. However, the potential problem with GMOs lies not with the artificiality and unknown risks of gene transfer, but with the artificiality and known risks of monoculture that apply to both the field and the societal view of GMOs.
Monoculture is the practice of planting large swaths of land with a single variety of food crops (Altieri). It contradicts one of the most important qualities of a healthy environment, biodiversity. The concept of biodiversity is that the earth contains a large variety of species, ecosystems, combinations of genes, and ecosystem services, like filtering water or taking in carbon dioxide. This incredible variety means that each part of the environment balances another. An ecosystem with less biodiversity is more vulnerable to severe injury from a single disease or natural disaster. In agriculture, greater biodiversity can mean that there will be varieties of crops to match a variety of climates and to combat a variety of pests and diseases. Growing different crop species together is another example of how biodiversity can be applied to agriculture. This is called polyculture and can help combat pests, as well as prevent the soil from being depleted of nutrients. Polyculture has dominated agriculture since humans first began to domesticating plants in around 10,000 B. C. E. (Baker). However, in the 50 years since the Green Revolution, the norm has become high-input monoculture: using large amounts of inorganic fertilizers and pesticides to grow one crop at a time (Miller and Spoolman). Monoculture is efficient, but fragile as well as unsustainable. On average in the U.S. it takes ten units of fossil fuel energy to put one unit of food energy on the table (Miller and Spoolman). This is not a practical way to produce food over the long run.
GMOs have the potential to become the pinnacle of monoculture, both from an agricultural and a societal viewpoint. Large chemical companies patent the genes they place in various species. This makes it illegal for farmers to save seed from the best of their crops and plant it the next year (Food, Inc.). In the past, saving seed was responsible for many small genetic changes that created new varieties particularly suited to a certain region. Although many farmers were already buying seed from agricultural companies long before GMOs became mainstream, GMOs have greatly increased the numbers of seed saving farmers (Charles). What this means is that instead of hundreds of thousands of farmers contributing to greater agricultural biodiversity, there are less than a dozen companies attempting to do the same job. For example, Monsanto, a chemical company, creates many different types of GMOs; more than 90% of the corn and soybeans in America, the U.S.'s two largest food crops, come from Monsanto (Johnson and O’Connor). With so few varieties of key food crops, the American food supply becomes more and more vulnerable to a single parasite or disease, as well as more and more controlled by a few companies.
Even the public debate over GMOs has the ring of a monoculture. According to the Monsanto website all GMOs that have gone through some sort of regulatory process are safe in all ways, while according to every hysterical news article published after some sort of health scare proclaims that all GMOs are evil, rather than blaming a specific pesticide (Commonly Asked Questions, Harmon). Every new variety of GMO has its own potential health risks to both people and the environment. Some of the most important risks include toxicity, ability to cause an allergic reaction, nutritional side effects, ability for genes to spread into conventional crops or wild varieties (FAQs on GMOs). When crops are genetically modified to either produce a certain pesticide, or be resistant to an herbicide, the risks become potentially a lot higher. Now, the risks include the possibility of killing non-target organisms and the effects of pesticide buildup in the soil. These risks vary widely depending on the GMO. An apple that is genetically modified to stay white when cut has much fewer risks associated with it than with corn that is genetically modified to be resistant to an herbicide, because human-grown apples are replicated by grafting, while corn pollen travels on the wind. This means that it is much easier for the GMO corn genes to spread. Also, the apple will not help to create superweeds, nor will it encourage farmers to use more herbicide. Therefore, to recognize no difference between the risks associated with the apple and the corn is to put on blinders to both dangers and benefits.
Genetic modification is not a problem nor is it always a solution. It is a tool that has the potential to create many good things, but must be used carefully. The best way to help ensure the safety of the American food supply is to not rely on any one thing, whether that is a company, a variety of corn, or an ideology. Polyculture in either agriculture or ideas is not always easy or economically efficient, but it is sustainable. For something, like food production, that needs to last forever, more sustainable is better.
Works Cited
Altieri, Miguel A. "Modern Agriculture: Ecological Impacts and the Possibilities for Truly Sustainable Farming." Agroecology in Action. N.p., n.d. Web. 19 May 2015.
Baker, Donald G. "A Brief Excursion into Three Agricultural Revolutions." Kuehnast Lecture. N.p., n.d. Web. 19 May 2015.
Charles, Dan. "Top Five Myths of Genetically Modified Seeds, Busted." NPR. NPR, 18 Oct. 2012. Web. 19 May 2015.
"Commonly Asked Questions about the Food Safety of GMOs." Monsanto. Monsanto, n.d. Web. 19 May 2015.
Food, Inc. Dir. Robert Kenner. 2008. Film.
Freedman, David H. "Are Engineered Foods Evil?" Scientific American (2013): n. pag. Print.
Harmon, Amy. "A Lonely Quest for Facts about GMOs." New York Times 4 Jan. 2014: n. pag. Print.
Johnson, Dave, and Shiobhan O'Connor. "These Charts Show Every Genetically Modified Food People Already Eat in the U.S." TIme 30 Apr. 2015: n. pag. Print.
"Pocket K No. 1: Q and A About Genetically Modified Crops." International Service for the Acquisition of Agri-Biotech Applications. ISAA, n.d. Web. 19 May 2015.
Pollan, Michael. The Botany of Desire: A Plant's-Eye View of the World. N.p.: n.p., 2001. Print.
Stokstad, Erik. "Can Biotech and Organic Farmers Get Along?" Science 8 Apr. 2011: n. pag. Print.