NR&E Summer 2018 2
Published in Natural Resources & Environment Volume 33, Number 1, Summer 2018. © 2018 by the American Bar Association. Reproduced with permission. All rights reserved. This information or any portion thereof
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Hydroponic operations, however, are not resource-free.
Because crops can be grown year-round, hydroponic operations
continuously use energy to maintain certain lighting and tem-
peratures. Hydroponics also require a high initial investment
and can be cost prohibitive to many farmers. Despite these
limitations, the hydroponic market share is expected to have
an annual growth rate of around 6.4 percent over the next
decade to reach approximately$13.73 billionby 2025.
Can Hydroponics Be Organic?
The growing popularity of hydroponics is a cause of concern
for more traditional organic farmers who argue that crops
grown without soil should not be able to use the USDA
organic label. Although hydroponic operations are not men-
tioned in OFPA, the act that established the NOP, some
hydroponic produce carries the USDA “organic certied”
label.
Even though OFPA does not mention the word “hydro-
ponics,” the NOSB had confronted hydroponics before its
November 2017 meeting. In 1995, before the USDA proposed
the rst rules implementing OFPA, the NOSB, in the con-
text of greenhouse standards, made the following statement
on hydroponics: “Hydroponic production in soilless media
to be labeled organically produced shall be allowed if all pro-
visions of the OFPA have been met.” See National Organic
Program, 62 Fed. Reg. 65,850 (Dec. 16, 1997). In 2002, the
NOP redened “organic production” in the Code of Federal
Regulations as “a production system that . . . respond[s] to
site-specic conditions by integrating cultural, biological, and
mechanical practices that foster cycling of resources, promote
ecological balance, and conserve biological diversity.” 7 C.F.R.
§ 205.2. Because this denition did not require that organic
production systems be soil-based, and hydroponics was not spe-
cically addressed elsewhere in the regulations, the door was
left open for certifying agents to certify hydroponic operations
as organic.
In 2010, the NOSB recommended engaging in the rule-
making process to exclude hydroponics formally. The
recommendation, entitled Production Standards for Terrestrial
Plants in Containers and Enclosures, provided that “grow-
ing media shall contain sufcient organic matter capable of
supporting natural and diverse soil ecology. For this reason,
hydroponic and aeroponic systems are prohibited.” National
Organic Standards Board, Proposals and Discussion Documents,
67 (Oct. 2017). The NOP, however, never adopted this
What Is Hydroponics?
Hydroponic cultivation is often thought of as the cultiva-
tion of plants in water. In hydroponic cultivation, however,
roots can receive nutrients through air or in other inert
media as well as from water. Because plants can grow in a
variety of media, hydroponics is more broadly thought of as
the cultivation of plants without soil. The absence of soil
from hydroponic production is at the heart of the organic
movement’s argument that hydroponics may not qualify as
“organic.”
Growing crops in soil requires space, labor, and water, as
well as good weather conditions, and hydroponic advocates
often highlight that these requirements are minimized in
hydroponic cultivation. First, because hydroponic crops are
typically grown vertically, in a closed stacked system, rather
than out, the need for expansive amounts of land is elimi-
nated. Additionally, hydroponic operations apply water and
nutrients directly to the roots of each plant. Water is reused,
and less is lost to evaporation and runoff. The hydroponic
method allows plants to grow faster and closer together, reduc-
ing the demand for space and water. One report found that
as compared to traditional agriculture, vertical farming uses
70 to 95 percent less water and over 90 percent less land.
Renee Choe, How Sustainable Is Vertical Farming? Students Try
to Answer the Question, State of the Planet, Earth Institute,
Columbia University (Dec. 10, 2015), http://blogs.ei.columbia.
edu/2015/12/10/how-sustainable-is-vertical-farming-students-
try-to-answer-the-question. In addition, because hydroponics
does not use soil, there is no chance of soil-borne insect pests,
disease attack, or weed infestation.
Hydroponics is being pursued in places where space or cli-
mate makes conventional farming a challenge. For example,
hydroponics has made rice production a possibility in crowded
Tokyo, Japan, and berry, citrus fruit, and banana production
possible in the dry, arid climate of Israel. Miriam Kresh, Israeli
Start-up Offers a Better Way to Grow Food, Jerusalem Post
(Feb. 24, 2017), available at www.jpost.com/Metro/Hope-for-
a-hungry-planet-476268. In the United States, hydroponics is
a growing component of urban agriculture efforts and is con-
sidered one way to combat food deserts––a place where it is
difcult to nd healthy, affordable fresh food. In 2017, Con-
gresswoman Marcy Kaptur (D–OH) introduced the Urban
Agriculture Production Act, which includes hydropon-
ics in the denition of “urban agriculture.” H.R. 3699, 15th
Cong. (2017). The bill proposes the creation of a new posi-
tion, Urban Agriculture Liaison, within the USDA, who will
provide “technical assistance” to urban farmers using “uncon-
ventional farming practices,” such as hydroponics. Id. at § 5(b)
(4)(F).
Hydroponics is also often discussed when contemplat-
ing the impact of climate change on agriculture production.
Farming has always been a risky business, subject to whims of
Mother Nature, but weather patterns are becoming increas-
ingly unpredictable with many areas experiencing prolonged
water shortages, unexpected frosts, and increased precipitation.
Climate change impacts and will continue to impact agricul-
tural yields, causing leaders to think about alternative farming
methods, including hydroponics. In addition, because hydro-
ponic production can occur year-round, many hydroponic
advocates argue that these operations have a higher yield and
offer a more reliable way to meet the nutritional needs of the
world’s growing population.
Climate change impacts
and will continue to impact
agricultural yields, causing
leaders to think about
alternative farming methods,
including hydroponics.