The BOOKPRESS | September 2000 |
Originally
published under the title "Ten Reasons Why Biotechnology Will Not Ensure
Food Security, Protect the Environment, and Reduce Poverty in the Developing
World" on the Food First Institute for Food and Development Policy Web
site <foodfirst.org/progs/global/biotech/>, October 1999. (Reprinted
by permission of the authors)
Biotechnology companies often claim that genetically modified organisms
(GMOs)––specifically genetically altered seeds––are essential scientific
breakthroughs needed to feed the world, protect the environment, and reduce
poverty in developing countries. This view rests on two critical assumptions,
both of which we question. The first is that hunger is due to a gap between
food production and human population density or growth rate. The second
is that genetic engineering is the only or best way to increase agricultural
production and thus meet future food needs.
References listed in print edition
only.
–
Miguel A.
Altieri is Associate Professor in the Division of Insect Biology at
the University of California, Berkeley.
Our objective is to challenge the notion of biotechnology as a magic bullet
solution to all of agriculture’s ills, by clarifying misconceptions concerning
these underlying assumptions.
1. There is no relationship between the prevalence of hunger in a given
country and its population. For every densely populated and hungry nation
like Bangladesh or Haiti, there is a sparsely populated and hungry nation
like Brazil and Indonesia. The world today produces more food per inhabitant
than ever before. Enough is available to provide 4.3 pounds to every person
every day: 2.5 pounds of grain, beans and nuts, about a pound of meat,
milk and eggs and another of fruits and vegetables. The real causes of
hunger are poverty, inequality and lack of access. Too many people are
too poor to buy the food that is available (but often poorly distributed)
or lack the land and resources to grow it themselves (Lappe, Collins and
Rosset l998).
2. Most innovations in agricultural biotechnology have been profit-driven
rather than need-driven. The real thrust of the genetic engineering industry
is not to make third world agriculture more productive, but rather to generate
profits (Busch et al l990). This is illustrated by reviewing the principle
technologies on the market today: a) herbicide resistant crops such as
Monsanto’s "Roundup Ready" soybeans, seeds that are tolerant to Monsanto’s
herbicide Roundup, and b)"Bt" crops which are engineered to produce their
own insecticide. In the first instance, the goal is to win a greater herbicide
market-share for a proprietary product and in the second to boost seed
sales at the cost of damaging the usefulness of a key pest management product
(the Bacillus thuringiensis based microbial insecticide) relied upon by
many farmers, including most organic farmers, as a powerful alternative
to insecticides. These technologies respond to the need of biotechnology
companies to intensify farmers’ dependence upon seeds protected by so-called
"intellectual property rights," which conflict directly with the age-old
rights of farmers to reproduce, share or store seeds (Hobbelink l991).
Whenever possible corporations will require farmers to buy their company’s
brand of inputs and will forbid farmers from keeping or selling seed. By
controlling germ plasm from seed to sale, and by forcing farmers to pay
inflated prices for seed-chemical packages, companies are determined to
extract the most profit from their investment (Krimsky and Wrubel l996).
3. The integration of the seed and chemical industries appears destined
to accelerate increases in per acre expenditures for seeds plus chemicals,
delivering significantly lower returns to growers. Companies developing
herbicide tolerant crops are trying to shift as much per acre cost as possible
from the herbicide onto the seed via seed costs and/or technology charges.
Increasingly price reductions for herbicides will be limited to growers
purchasing technology packages. In Illinois, the adoption of herbicide
resistant crops makes for the most expensive soybean seed-plus-weed management
system in modern history––between $40 and $60 per acre, depending on rates,
weed pressure, etc. Three years ago, the average seed-plus-weed control
costs on Illinois farms was $26 per acre, and represented 23% of variable
costs; today they represent 35–40% (Benbrook l999). Many farmers are willing
to pay for the simplicity and robustness of the new weed management system,
but such advantages may be short-lived as ecological problems arise.
4. Recent experimental trials have shown that genetically engineered seeds
do not increase the yield of crops. A recent study by the USDA Economic
Research Service shows that in 1998 yields were not significantly different
in engineered versus non-engineered crops in 12 of 18 crop/region combinations.
In the six crop/region combinations where Bt crops or HRCs fared better,
they exhibited increased yields between 5–30 percent. Glyphosphate tolerant
cotton showed no significant yield increase in either region where it was
surveyed. This was confirmed in another study examining more than 8,000
field trials, where it was found that Roundup Ready soybean seeds produced
fewer bushels of soybeans than similar conventionally bred varieties (USDA
l999).
5. Many scientists claim that the ingestion of genetically engineered food
is harmless. Recent evidence however shows that there are potential risks
of eating such foods as the new proteins produced in such foods could:
act themselves as allergens or toxins, alter the metabolism of the food-producing
plant or animal, causing it to produce new allergens or toxins, or reduce
its nutritional quality or value as in the case of herbicide-resistant
soybeans that contained less isoflavones, an important phytoestrogen present
in soybeans, believed to protect women from a number of cancers. At present
there is a situation in many developing countries importing soybean and
corn from the U.S., Argentina and Brazil, in which genetically engineered
foods are beginning to flood the markets, and no one can predict all their
health effects on consumers, most unaware that they are eating such food.
Because genetically engineered food remains unlabeled, consumers cannot
discriminate between GE and non-GE food, and should serious health problems
arise, it will be extremely difficult to trace them to their source. Lack
of labeling also helps to shield the corporations that could be potentially
responsible from liability (Lappe and Bailey, l998).
6. Transgenic plants which produce their own insecticides closely follow
the pesticide paradigm, which is itself rapidly failing due to pest resistance
to insecticides. Instead of the failed "one pest-one chemical" model, genetic
engineering emphasizes a "one pest-one gene" approach, shown over and over
again in laboratory trials to fail, as pest species rapidly adapt and develop
resistance to the insecticide present in the plant (Alstad and Andow l995).
Not only will the new varieties fail over the short-to-medium term, despite
so-called voluntary resistance management schemes (Mallet and Porter l992),
but in the process may render useless the natural pesticide "Bt," which
is relied upon by organic farmers and others desiring to reduce chemical
dependence. Bt crops violate the basic and widely accepted principle of
"integrated pest management" (IPM), which is that reliance on any single
pest management technology tends to trigger shifts in pest species or the
evolution of resistance through one or more mechanisms (NRC l996). In general
the greater the selection pressure across time and space, the quicker and
more profound the pests’ evolutionary response. An obvious reason for adopting
this principle is that it reduces pest exposure to pesticides, retarding
the evolution of resistance. But when the product is engineered into the
plant itself, pest exposure leaps from minimal and occasional to massive
and continuous exposure, dramatically accelerating resistance (Gould l994).
Bt will rapidly become useless, both as a feature of the new seeds and
as an old standby, sprayed when needed by farmers that want out of the
pesticide treadmill (Pimentel, et. al. l989).
7. The global fight for market share markets is leading companies to massively
deploy transgenic crops around the world (more than 30 million hectares
in l998) without proper advance testing of short- or long-term impacts
on human health and ecosystems. In the U.S., private sector pressure led
the White House to decree "no substantial difference" between altered and
normal seeds, thus evading normal FDA and EPA testing. Confidential documents
made public in an on-going class action lawsuit have revealed that the
FDA’s own scientists do not agree with this determination. One reason is
that many scientists are concerned that the large-scale use of transgenic
crops poses a series of environmental risks that threaten the sustainability
of agriculture (Goldberg, l992; Paoletti and Pimentel l996; Snow and Moran
l997; Rissler and Mellon l996; Kendall, et. al. l997 and Royal Society
l998):
a.The trend to create broad international markets for single products,
is simplifying cropping systems and creating genetic uniformity in rural
landscapes. History has shown that a huge area planted to a single crop
variety is very vulnerable to new matching strains of pathogens or insect
pests. Furthermore, the widespread use of homogeneous transgenic varieties
will unavoidably lead to "genetic erosion," as the local varieties used
by thousands of farmers in the developing world are replaced by the new
seeds (Robinson l996).
b.The use of herbicide-resistant crops undermines the possibilities of
crop diversification thus reducing agrobiodiversity in time and space (Altieri
l994).
c.The potential transfer through gene flow of genes from herbicide-resistant
crops to wild or semi-domesticated relatives can lead to the creation of
superweeds (Lutman l999).
d.There is potential for herbicide-resistant varieties to become serious
weeds in other crops (Duke l996, Holt and Le baron l990).
e.Massive use of Bt crops affects non-target organisms and ecological processes.
Recent evidence shows that the Bt toxin can affect beneficial insect predators
that feed on insect pests present on Bt crops (Hilbeck, et. al. l998),
and that windblown pollen from Bt crops found on natural vegetation surrounding
transgenic fields can kill non-target insects such as the monarch butterfly
(Losey, et. al. l999). Moreover, Bt toxin present in crop foliage plowed
under after harvest can adhere to soil colloids for up to three months,
negatively affecting the soil invertebrate populations that break down
organic matter and play other ecological roles (Donnegan, et. al. l995
and Palm, et. al. l996).
f.There is potential for vector recombination to generate new virulent
strains of viruses, especially in transgenic plants engineered for viral
resistance with viral genes. In plants containing coat protein genes, there
is a possibility that such genes will be taken up by unrelated viruses
infecting the plant. In such situations, the foreign gene changes the coat
structure of the viruses and may confer properties such as changed methods
of transmission between plants. The second potential risk is that recombination
between RNA virus and a viral RNA inside the transgenic crop could produce
a new pathogen leading to more severe disease problems. Some researchers
have shown that recombination occurs in transgenic plants and that under
certain conditions it produces a new viral strain with altered host range
(Steinbrecher l996).
Ecological theory predicts that the large-scale landscape homogenization
with transgenic crops will exacerbate the ecological problems already associated
with monoculture agriculture. Unquestioned expansion of this technology
into developing countries may not be wise or desirable. There is strength
in the agricultural diversity of many of these countries, and it should
not be inhibited or reduced by extensive monoculture, especially when consequences
of doing so result in serious social and environmental problems (Altieri
l996).
Although the ecological risks issue has received some discussion in government,
international, and scientific circles, discussions have often been pursued
from a narrow perspective that has downplayed the seriousness of the risks
(Kendall, et. al. 1997; Royal Society 1998). In fact, methods for risk
assessment of transgenic crops are not well developed (Kjellsson and Simmsen
1994) and there is justifiable concern that current field biosafety tests
tell little about potential environmental risks associated with commercial-scale
production of transgenic crops. A main concern is that international pressures
to gain markets and profits is resulting in companies releasing transgenic
crops too fast, without proper consideration for the long-term impacts
on people or the ecosystem.
8. There are many unanswered ecological questions regarding the impact
of transgenic crops. Many environmental groups have argued for the creation
of suitable regulation to mediate the testing and release of transgenic
crops to offset environmental risks and demand a much better assessment
and understanding of ecological issues associated with genetic engineering.
This is crucial as many results emerging from the environmental performance
of released transgenic crops suggest that in the development of "resistant
crops", not only is there a need to test direct effects on the target insect
or weed, but the indirect effects on the plant (i.e. growth, nutrient content,
metabolic changes), soil, and non-target organisms. Unfortunately, funds
for research on environmental risk assessment are very limited. For example,
the USDA spends only 1% of the funds allocated to biotechnology research
on risk assessment, about $1–2 million per year. Given the current level
of deployment of genetically engineered plants, such resources are not
enough to even discover the "tip of the iceberg." It is a tragedy-in-the-making
that so many millions of hectares have been planted without proper biosafety
standards. Worldwide, such acreage expanded considerably in 1998 with transgenic
cotton reaching 6.3 million acres, transgenic corn 20.8 million acres,
and soybeans 36.3 million acres, helped along by marketing and distribution
agreements entered into by corporations and marketers (i.e. Ciba Seeds
with Growmark and Mycogen Plant Sciences with Cargill), in the absence
of regulations in many developing countries. Genetic pollution, unlike
oil spills, cannot be controlled by throwing a boom around it, and thus
its effects are non-retrievable and may be permanent. As in the case of
pesticides, banned in northern countries, but applied in the South, there
is no reason to assume that biotechnology corporations will assume the
environmental and health costs associated with the massive use of transgenic
crops in the South.
9. As the private sector has exerted more and more dominance in advancing
new biotechnologies, the public sector has had to invest a growing share
of its scarce resources in enhancing biotechnological capacities in public
institutions, including the CGIAR, and in evaluating and responding to
the challenges posed by incorporating private sector technologies into
existing farming systems. Such funds would be much better used to expand
support for ecologically based agricultural research, as all the biological
problems that biotechnology aims at can be solved using agroecological
approaches. The dramatic effects of rotations and intercropping on crop
health and productivity, as well as of the use of biological control agents
on pest regulation have been confirmed repeatedly by scientific research.
The problem is that research at public institutions increasingly reflects
the interests of private funders at the expense of public-good research
such as biological control, organic production systems, and general agroecological
techniques. Civil society must request more research on alternatives to
biotechnology by universities and other public organizations (Krimsky and
Wrubel l996). There is also an urgent need to challenge the patent system
and intellectual property rights intrinsic to the WTO which not only provide
multinational corporations with the right to seize and patent genetic resources,
but that will also accelerate the rate at which market forces already encourage
monocultural cropping with genetically uniform transgenic varieties. Based
on history and ecological theory, it is not difficult to predict the negative
impacts of such environmental simplification on the health of modern agriculture
(Altieri l996).
10. Although there may be some useful applications of biotechnology (i.e.
breeding drought resistant varieties or crops resistant to weed competition),
because these desirable traits are polygenic and difficult to engineer,
these innovations will take at least ten years to be ready for field use.
Once available, and if farmers can afford them, the contribution to yield
enhancement of such varieties will be between 20–35%; the rest of yield
increases must come from agricultural management. Much of the needed food
can be produced by small farmers located throughout the world using agroecological
technologies (Uphoff and Altieri l999). In fact, new rural development
approaches and low-input technologies spearheaded by farmers and NGOs around
the world are already making a significant contribution to food security
at the household, national and regional levels in Africa, Asia and Latin
America (Pretty l995). Yield increases are being achieved by using technological
approaches , based on agroecological principles that emphasize diversity,
synergy, recycling and integration and social processes that emphasize
community participation and empowerment (Rosset l999). When such features
are optimized, yield enhancement and stability of production are achieved,
as well as a series of ecological services such as conservation of biodiversity,
soil and water restoration and conservation, improved natural pest regulation
mechanisms, etc. (Altieri et al l998). These results are a breakthrough
for achieving food security and environmental preservation in the developing
world, but their potential and further spread depends on investments, policies
, institutional support and attitude changes on the part of policy makers
and the scientific community, especially the CGIAR who should devote much
of its efforts to assist the 320 million poor farmers living in marginal
environments. Failure to promote such people-centered agricultural research
and development due to diversion of funds and expertise to biotechnology,
will forego a historical opportunity to raise agricultural productivity
in economically viable, environmentally benign and socially uplifting ways.
_______________________________
Peter Rosset
is co-director of Food First Institute for Food and Development Policy.
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