Physical Benefits
The Harvest:
In 1999, Eco-Initiatives’ three gardens produced over two tons of organic
herbs and vegetables; an investigation of their harvesting records and
a consideration of several mysterious factors affecting these was needed
to come up with a more detailed picture…
**It is important to remember throughout this report that these collective
gardens are socially driven—the food produced and the money saved
from this is very helpful but the importance of unquantifiable human impacts
they bring about cannot be stressed enough! **
The following table illustrates what each garden is believed to have
produced during a certain growing season—the numbers are also divided by
area.
Table 1: Yields of crops from three organic urban gardens.
Garden and Year |
**Approximate Area Planted (square meter) |
Total Yield (kilograms) |
Yield per square meter (kilograms) |
Cantaloupe 97 |
180 |
About 500 |
Avg. 2.8 |
Cantaloupe 98 |
433 |
490-661 |
1.1-1.5 |
Cantaloupe 99 |
433 |
1531-2067 |
3.5-4.7 |
Rosemary 99 |
83 |
327-442 |
3.4-5.3 |
Friendship 99 |
About 9 |
75-100 |
8-11 |
**The general rule used in calculating growing area is that 1.5 meter
rows alternate with 30 centimeter alleys; an additional 25 meters squared
were taken out as ‘hangout space’ for the Cantaloupe in 1998 and 1999.
The ranges presented under ‘Total Yield’ reflect the fact that many
estimates had to be made. The first numbers are based on information gathered
by staff members and volunteers—some of these records were noted in terms
of ‘plastic bag-fuls’ and handfuls as no scale was available. A trip to
the local supermarket’s produce section was helpful in transcribing these
into kilograms!
The second set of numbers is based on the consideration that not all
food produced actually makes it into the record books. Some of the vegetables
are eaten on the spot, some are harvested by gardeners coming in on their
own, some are stolen and some are eaten by animals. It was estimated that
this amount represents about 35% of total production; the actual
amount of food grown in the gardens is thus between the two possible numbers
given.
The next table shows, based on the case of three collective gardens
of small, medium and large sizes, what sort of physical outputs may be
expected in Montreal where the growing season lasts roughly from May to
October/November.
Table 2: Possible production--in Montreal--per person--for gardens
of varying sizes
Garden |
Size (m2 ) and number of participants |
Possible production (kg) |
Expected production per person (kg) |
Friendship |
Small,10; 5 |
75-100 |
15-20 |
Rosemary |
Medium, 100; 15 |
327-442 |
22-30 |
Cantaloupe 98 |
Large, 550; 15 |
490-661 |
33-44 |
Cantaloupe 99 |
Large, 550; 35 |
1531-2066 |
44-59 |
Where the Food Goes
-
Some participants take home more than others do as the latter may come
mostly for therapeutic purposes-the food is not divided evenly but rather
taken by those who need/want it.
-
In 1999, about 198 kg of food were left over (following harvests by participants,
thieves and animal) from the Cantaloupe and 48 kg from the Rosemary; these
were donated to the Food Depot.
-
With 35 and 15 volunteers respectively, it follows that each volunteer
could have obtained an average of 51 kilograms from the Cantaloupe and
26 kilograms from the Rosemary; results from the social benefits study
indicate that the average gardeners saves between $150-$200 on food in
a growing season.
-
It is important to cross reference these estimated numbers—illustrate them
in different ways so as to get a more accurate notion of actual physical
benefits. One must consider that for instance, the Rosemary produced enough
so that eight grocery bags full of produce were available for division
amongst an average of 20 gardeners coming in weekly.
Notes on Production
-
When looking at these results, one must note that generally, a garden’s
first year is not as productive as later years. Organic agriculture is
labour intensive, requiring a certain amount of people and time to ‘make
the garden grow’. It also involves gathering knowledge and practice before
things start running smoothly.
-
Several issues need to be determined, such as which varieties are best
adapted to local conditions and when the best time to plant/harvest is.
-
Production techniques are also important determinants of possible outputs.
For instance, the Cantaloupe is split between rows of crops and raised
beds. Sometimes referred to as French intensive gardening, the raised bed
method is said to produce phenomenal yields--possibly ten times higher
than those produced by conventional agriculture methods (see www.cityfarmer.org/albie.html#albie
for more on this).
In determining the market value of the gardens’ production, I used a formula
found on the City Farmer web site (www.cityfarmer.org/valuecrops.html#value).
Table 4: USDA formula results.
Garden |
Estimated US $ |
Adjusted CAN $ (*1.33) |
Cantaloupe 97 |
2196 |
2920 |
Cantaloupe 98/99 |
6273 |
8343 |
Rosemary 99 |
1183 |
1573 |
Friendship 99 |
118 |
157 |
Total 99* |
7574 |
10,073 |
*These might or might not represent organic prices; the term ‘farmer’s
market’ allows for both.
-
All calculations point to (depending on a variable which may change slightly
between garden layouts) a value of about 19-21$ produced per meter square.
-
There are limitations to this formula but when compared to similar studies
(see www.cityfarmer.org/madison.html)
it provided a seemingly adequate estimate.
-
It was ultimately concluded (based on my results and questionnaire results
on gardeners’ average savings) that in 1999, the three gardens probably
produced $15,000 of organic produce.
It must indeed be stressed, when assigning a monetary value to these crops
that produce obtained is organically grown. Concerning the difference in
price between organic and non-organic produce, one must remember that the
latter are kept artificially low; if all indirect costs of conventional
food production were factored into the price of the product, organic foods
would cost the same or would more likely be cheaper. External costs include
such things as pesticide regulation, testing, hazardous waste cleanup,
manufacturing mishaps, farm worker exposure, damage to wildlife habitat,
and surface/groundwater contamination (see www.earthsave
for more on this).
Environmental impacts:
-
Urban agriculture is a step towards changing problematic ‘consume-dispose
open loops’ of cities into ‘consume-process-reuse closed loops’ (Rees,
1992).
-
The focus on compost (from domestic organic wastes) as a principle input
in production has many advantages. By recycling nutrients, it reduces the
amount of materials being sent to landfills, thereby reducing ground and
surface water pollution near city limits. Organic compost helps maintain
the nutrient content of soils; it is an environmentally friendly alternative
to artificial fertilizers which are associated with soil depletion and
erosion.
-
Urban agriculture helps save energy and reduce greenhouse gas emissions.
In North America, the average food item travel about 2,400 kilometers to
reach its destination; this figure is equivalent to the distance between
Orlando and Montreal (Waridel, 1998)! This transportation has serious implications.
Local food production for local consumption represents less transportation
needs and consequently a slower rate of carbon dioxide emissions, thereby
limiting the greenhouse effects.
-
Local food consumption also helps reduces wasteful and possibly health
threatening practices such as excessive packaging, refrigeration and the
use of additives for preservation.
-
Organic agriculture promotes biodiversity. The Friendship, Rosemary and
Cantaloupe gardens contain about 200 different varieties of herbs and vegetables;
in this type of agriculture, rare varieties that are perfectly adapted
to local conditions are conserved rather than dying out. This fall’s revival
by the gardens of the once famous Montreal Melon displaced by urbanization
is a good example.
-
Urban agriculture improve the city landscape. Green space is crucial; it
also increases biodiversity by attracting fauna normally unseen in cities--this
was observed at Eco-Initiatives’ gardens. Furthermore, I believe it is
safe to say that green space is needed and appreciated by all.
-
See www.cityfarmer.org/rees.html
for more on environmental benefits!
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