Essential Steps to a Sustainable Agriculture
What is a sustainable agriculture? And once
you know what it is, how do you practice it?
These are the questions my staff and I first addressed in the mid-80s.
There are dozens of definitions of a sustainable agriculture. But
I'll go with a simple one: A sustainable agriculture is a system
of agriculture that will last. It is an agriculture that maintains
its productivity over the long run.
In order to endure, our national system of agriculture must use
our natural resources wisely-so they are not used up or permanently
damaged. It must protect the health of the natural environment.
And it must enable farmers and ranchers to make a profit and have
a good quality of life. Independent producers of modest means should
be able to make a profit, not just those producers with sizable
resources or those allied with corporate structures.
If this is the kind of agriculture we want-how do we get there
from here? I have formulated eight steps that will get us started.
These points first came into being when I thought about the areas
of perennial concern to farmers, such as controlling weeds and insects,
conserving soil, and making a profit. Unless we addressed these
areas in ways that a farmer could understand and use, I reasoned,
we at the Kerr Center, as advocates for change in agriculture, would
not be successful in getting our message across. So after many discussions,
we came up with these simple, yet comprehensive guidelines that
would help my staff evaluate "the sustainability" of proposed
projects at the Center. We soon began to pass them along to farmers
to use to evaluate their own farming practices.
Ten years ago, area producers had little information about sustainable
agriculture and little was forthcoming from traditional sources
of information like the Cooperative Extension Service. We were the
first group in Oklahoma to tackle the ideas of sustainable agriculture
in any substantial way, committing money and our whole staff to
the notion. We were groundbreakers, in part because our status as
an independent, non-profit foundation allowed us to be. We had no
bureaucracy to sway or legislators to convince or donors to please.
Our ideas have not always been popular, but despite this, we have
stuck to our principles. Over the years I have expanded and contacted
these points, thinking of them sometimes as steps to be taken, and
other times as goals to be met. The current list has stood the test
of time and usage at the Kerr Center and in consultation with farmers
and ranchers.
Farmers make decisions every season, based on their experience,
the markets, the weather, government guidelines, tradition, time,
the condition of fields and pastures, and any number of other factors
that are always changing. Farming is an art as well as a science,
a complicated mix of hard knowledge and intuition.
Just how valuable these criteria are will be determined by how
well they work for the farmer every day. They are guideposts for
thinking about a farming operation, arrows that point the way to
the long-term viability of a farm.
1.
Conserve and Create Healthy Soil
- Stop soil erosion by terracing, strip cropping,
repairing gullies
- Add organic matter to soil (with "green manure"
cover crops, compost, manures, crop residues, organic fertilizers)
- Conservation tillage
- Plant wind breaks
- Rotate cash crops with hay, pasture, or cover crops
2. Conserve Water and Protect Its Quality
- Stop
soil erosion in field and pasture
- Reduce
use of chemicals
- Establish
conservation buffer areas
- Grow
crops adapted to rainfall received
- Use
efficient irrigation methods
3. Manage Organic Wastes and Farm Chemicals So They Don't Pollute
Organic
wastes:
- Test
soil and applying manures and littersonly when needed
- Compost
dead birds and litters
- Store
litter piles out of the rain and snow
- Raise
pastured or free-range poultry
- Raise
hogs in hoop houses or free-range
- Farm
chemicals and trash:
- Look
for alternatives to chemicals
- Use
the least amount necessary
- Buy
the least toxic chemical
- Recycle
- Dispose
according to label instructions
4. Manage Pests with Minimal Environmental Impact Weed Management
| Mechanical Approaches
- Mowing
- Flaming
- Flooding
- Tillage
- Controlled
burns
Cultural
Approaches
- Crop
Rotation
- Smother
crops
- Cover
crops
- Allelopathic
plants
- Close
spacing of plants
Biological
Approaches
- Multispecies
grazing
- Rotational
grazing
- Chemical
Approaches
- Integrated
Pest Management
- Use
of narrow spectrum, least-toxic herbicides
- Properly
calibrated sprayers
- Application
methods that minimize amount used, drift, and farmer contact
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Insect and Disease Management
- Introduce
or enhance existing populations of natural predators, pathogens,
sterile insects, and other biological control agents.
- Traps
- Maintain
wild areas or areas planted with species attractive to beneficial
insects
- Selective
insecticides or botanical insecticides which are less toxic
- Trap
crops
- Crop
rotation (avoid monoculture) Intercropping, strip cropping
- Maintain
healthy soil (prevents soil-based diseases)
- Keep
plants from becoming stressed
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5. Select Plants and Animals Adapted to the Environment
- Grow
crops and crop varieties well-suited to Oklahoma's climate
- Match
crops to the soil
- Experiment
with older, open pollinated varieties that do well without chemical
inputs
- Raise
hardy breeds of livestock adapted to climate
- Raise
livestock that gain well on grass and native forages
6. Encourage Biodiversity
(of domesticated animals, crops, wildlife and native plants,
microbic and aquatic life)
Diversify crops and livestock raisedLeave habitat (field margins,
unmowed strips, pond and stream borders, etc.,) for wildlifeMaintain
the health of streams and pondsProvide wildlife corridorsRotate
row crops with hay crops
7.
Conserve Energy Resources
- Reduce
number of tillage operations
- Cut use
of chemicals and fertilizers
- Develop
production methods that reduce horsepower needs
- Recycle
used oil
- Use solar-powered
fences and machines
- Use renewable,
farm-produced fuels: ethanol, methanol, fuel oils from oil seed
cops, methane from manures and crop wastes
8. Increase Profitability and Reduce Risk
Diversify
crops and livestock - Substitute
management for off-farm inputs
- Maximize
the use of on-farm resources
- Work
with, not against, natural cycles
- Keep
machinery, equipment and building costs down
- Add value
to crops and livestock
- Try direct
marketing (susbscription farming (CSA), farmers' markets, farm
stores, mail order)
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