HomeMy WebLinkAboutOPD-011-06
~
REPORT
OPERATIONS DEPARTMENT
Meeting:
GENERAL PURPOSE AND ADMINISTRATION COMMITTEE
Report #: OPD-011-06
File #:
6P/t ~ ~7b ~ Db
By-Law #:
Date:
OCTOBER 2, 2006
Subject:
PESTICIDE REDUCTION IN CLARINGTON
RECOMMENDATIONS:
It is respectfully recommended that the General Purpose and Administration Committee
recommend to Council the following:
1. THAT Report OPD-011-06 be received;
2. THAT Council direct staff to facilitate consultation sessions to involve residents in
the development of a program that could minimize the use of pesticides;
3. THAT the Municipality champion a Pesticide Education Program in consultation
with all interested stakeholders focusing on sustainable horticultural practices as
an alternative to chemical pesticides; and
4. THAT Council request the Federal Minister of Health to expedite and expand
programs dealing with the reduction of cosmetic use of pesticides in residential
and commercial eas.
Submitted by:
RevieWedbYO~-~
Franklin Wu,
Chief Administrative
Officer
FH/wc
CORPORATION OF THE MUNICIPALITY OF CLARINGTON
40 TEMPERANCE STREET, BOWMANVILLE, ONTARIO L 1C 3A6 T (905) 263-2292 F (905) 263-4433
REPORT NO. OPD-011-06 PAGE 2
1.0 BACKGROUND:
On June 28, 2001, the Supreme Court of Canada released its decision
with regard to the banning of pesticides in Hudson, Quebec. In its
decision, the court upheld a municipal by-law enacted by the Town of
Hudson, Quebec to restrict the cosmetic use of pesticides in that
community. The decision is important because it confirms the authority of
municipal governments to regulate matters that involve the general
welfare of the residents.
The Town of Hudson enacted By-law 270, a by-law to restrict the use of
pesticides within the town limits in 1991. The Supreme Court also found
that the by-law did not conflict with federal or provincial legislation.
The issue of pesticides is complex with diversity in public opinion and
programs being used. There is no simple answer. Many municipalities
have adopted programs that have reduced the use of pesticides on public
land. The Integrated Plant Health Program targets not the pests, but the
health of the plants and the soil using preventative techniques aimed at
ensuring healthy, rigorous plants that are less susceptible to pest
infestation utilizing pesticides as a last resort.
A pesticide is defined as a chemical or other substance used to control
plants and animal pests.
Cosmetic use of pesticides is the application of pesticides for aesthetic or
appearance reasons only.
Pesticides include weed killers, slug pellets, fungicide sprays and animal
repellant insecticides. It should be noted combined fertilizers such as
weed and feed would be considered a pesticide.
Pesticides are controlled and regulated by Health Canada and the Ontario
Ministry of Environment. These bodies, using risk-based analysis,
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 3
determine if products can be used in Canada and subsequently the
Province of Ontario. Through the Ontario Ministry of Environment, they
regulate by establishing a number of pesticide categories specifying
application and vendor requirement.
2.0PEST MANAGEMENT REGULATORY AGENCY
The Pest Management Regulatory Agency (PMRA) regulates the import
into, sale, and safe use of pesticides in Canada at the Federal level.
The Pest Management Information Service is a Federal Government
initiative to provide information on pesticide regulation and registered
pesticides. The service has been available to Canadians since 1984 and
operates under the PMRA.
A team of Information Officers is available to respond to inquiries about
the federal pesticide registration process in Canada, federal regulations,
Canada’s initiatives in the area of pesticides and pesticide labeling and
safety precautions.
On September 27, 2000, PMRA announced the priority evaluation of the
eight most commonly available lawn pesticides. This re-evaluation uses
modern scientific standards to determine their continued acceptability for
registration and whether any changes need to be made to the conditions
of registration of these chemicals.
The re-evaluations are completed for four of the lawn pesticides:
Insecticides chlorpyrifos, diazinon, malathion and racemic mecoprop are
being phased out. The re-evaluation reviews for 2-4D was released on
February 17, 2005, and the two remaining herbicides dicamba, MCPA are
targeted for 2006.
When evaluating a pesticide, the PRMA has access to the available
scientific information on that product including laboratory, epidemiology
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 4
toxicology studies, scientific reports and more. No other group or
organization currently has access to all of that information. This allows
PMRA to conduct thorough scientific assessments to determine if a
product is safe for use or not when used according to label directions.
The PRMA also determines allowable uses, doses and other label
instruction for each pesticide product.
It also should be noted that PMRA conducts specific risk assessment for
sensitive sub-populations including children and takes their unique
physiological characteristics and behaviour into account.
A new piece of federal legislation Bill C-53, The Pest Control Product Act,
came into force in July, 2006. Under the new Act, the Federal Minister of
Health is now obligated to initiate a special review of pesticides that
contain active ingredients which have been banned by other member
nations of the Organization for Economic Cooperation and Development,
due to health or environmental concerns. Once the Minister initiates a
review, the onus is on pesticide manufacturers to provide evidence that
their products are not harmful. It is important that Council request the
Minister to expedite and expand programs dealing with the reduction of
cosmetic use of pesticides in residential and commercial areas.
3.0 REGION OF DURHAM HEALTH DEPARTMENT
The Region of Durham Health Department addressed pesticide regulation
in their correspondence to the Health and Social Services Committee
March 29, 2001.
The Region felt, at that time, and concurs with those today, that a
comprehensive legal framework already exists to regulate the
manufacture, sale and use of pesticides. In general, environmentally
concerned municipalities continue to take voluntary action to curb or stop
the use of pesticides to control weeds in part by adopting an Integrated
Pest Management approach.
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 5
It should be noted that none of the area Durham municipalities are
considering a municipal pesticide ban. Scugog recently approved an
integrated pest management policy which has been in effect in 2006.
4.0 LINK BETWEEN PESTICIDES USED FOR ORNAMENTAL PURPOSES
AND CANCER
Studies in peer review journals indicate that there may be a link between
exposure to some components of pesticides and an increased risk of
some types of cancer. Studies have also linked occupational exposure to
certain pesticides with prostate cancer, kidney cancer, brain cancer and
lung cancer. However, scientific research has not established a firm link
between environmental exposures to pesticides in individuals.
According to Health Canada, it should be noted that only pesticides that
are proven not to pose unacceptable risk of cancer in humans are
registered. Health Canada, in partnership with the Public Health Agency
of Canada, continues to monitor, identifying the trends and the risk factors,
developing programs to reduce cancer risks, and undertaking research to
evaluate risks from the environment and behaviours.
The Ontario College of Family Physicians is strongly recommending that
people reduce their exposure to pesticides wherever possible after
releasing a comprehensive review of research on the effects of pesticides
on human health. According to one of the authors, many of the health
problems are linked with pesticide use are serious and difficult to treat,
and they are advocating reducing exposure to pesticides and prevention
of harm as the best approach. The College’s overall message to patients
is to avoid exposure to all pesticides whenever and wherever possible.
5.0 IMPLICATIONS OF A PESTICIDE BAN
As Council is aware, the implications of a pesticide ban are challenging.
Many people take great pride in maintaining a green lawn and residents
could be impacted by a by-law restricting their ability to deal with
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 6
maintenance on their own property. Pesticides are legal products and a
ban may drive usage underground.
If a by-law is brought into place, the By-Law Enforcement Division would
require additional training as well as staff to enforce such a by-law.
As municipalities are struggling to limit the use of pesticides for beautifying
home lawns and gardens, the question of voluntary measures such as
education and marketing is being considered over an outright ban.
It is important to note that according to a “Best Practices Review” by the
Canadian Centre for Pollution Prevention, education and outreach
programs alone, while more popular, are far less effective in reducing
cosmetic pesticide use. By-laws supported with public education result in
a greater reduction in residential pesticide use than education programs
alone.
The Clarington Agricultural Advisory Committee has expressed a concern
about a possible municipal pesticide ban. They understand that under
most municipal by-laws dealing with pesticides, that the furtherance of a
normal farm practice carried on as part of an agricultural operation would
be exempt. They however are concerned about buffers between farm
and urban areas, as well as the fact that the Canadian regulatory system
is the most rigorous in the world. Farmers are constantly innovating to
minimize pesticide use and crop protection products are usually
professionally applied. Correspondence from Ted Watson (Attachment
No. 1) is attached for information, including articles on good healthy plant
life.
The impact of non-pesticide use in the Municipality has been mainly on
non-turf areas, but will become a concern once a full turf restoration
program comes into effect. At present, staff clear weeds in BIA areas and
parking lots two and three times a year. If herbicides were used, this
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 7
could be reduced by over one half. The use of a sealer in the interlock
section might reduce the weed growth by twenty per cent, but the main
concentration of weeds is still in the expansion joints between sidewalk
slabs and between curbs and concrete\asphalt. At the present time, sport
field conditions are adequate. Our restoration program is underway which
includes regular aeration, topdressing and overseeding the fields and this
will have a positive effect in crowding out many weed species, such as
dandelions, plantain, and chickweed etc. The problem this will produce is
providing a fertile bed for the most persistent weeks such as field
bindweed and clover black medic, which grow in the high traffic areas like
goal mouths and centre fields.
The use of alternatives has been tried numerous times. Aquacide\hot
water is safe for the soil environment; however, it is extremely slow
because each individual weed has to be burned. Beet juice and corn
gluten is a fairly decent fertilizer, but puts a formidable barrier for grass
seed making the process of overseeding a waste of time and money.
6.0 EDUCATIONAL PROGRAM
The Operations Department has information on the Clarington Website for
professionals and landowners. This includes the following:
?
Best Practices for Lawn and Garden Care
?
Lawn Alternatives
?
Frequently Asked Questions
?
Organic Lawn Care
The Municipality must take the lead role on increased public education on
the need for or use of pesticides and alternatives to their use.
The Operations Department will be exploring the following for 2007 and
2008 pending budget approval:
1. Seminar – Healthy Lawns, Healthy Gardens 2007
2. Healthy Lawns and Garden Guide 2007
3. Healthy Lawns Seminar with Commercial Vendors 2007
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
REPORT NO. OPD-011-06 PAGE 8
4. Easy Lawn and Garden Care Natural Alternatives to Pesticide 2008
5. Update Information on the Clarington Website ongoing
7.0 DEVELOPMENT OF A MUNICIPAL PESTICIDE PROGRAM
In order to develop an overall pesticide strategy for Clarington, it is
suggested that the consultation process include the following:
?
Media Releases
?
Website Update and Feedback Forum
?
Inviting Focus Groups to Comment
?
Review of Feedback and Recommendations from the Public No Later
Than December, 2006
?
Report to Council with Results and Recommendations by February,
2007
8.0 CONCLUSION
There is a growing movement by residents to demand higher expectations
for those managing pesticide. Staff continues to incorporate alternative
products and methods into their Plant Care Program. The blanket
application of spraying parks and trees is long gone. Integrated Pest
Management is an environmentally friendly approach using cultural,
biological, physical and mechanical methods.
In the end, we may have to adjust our mindset on what we think is green
and healthy and less reliant on chemical products, but better to resist
damaging pests and unwelcome weeds.
Attachments:
Attachment #1 - Letter July 24, 2006 from Mr. Ted Watson
I:GPA Reports 2006\OPD-011-06\Pesticide Reduction in Clarington
I'
ATTACHMENT NO.: 1
REPORT NO.: OPD.011.06
~GEND~
T ed Watson
1683 Maple Grove Road
Bowmanville, ON LIC 3K3
905-623-4934
"" ~..J'
'- 'i
Mr, John Mutton, Mayor ofClarington
40 Temperance Street
Bowmanville, ON LIC 3A6
. :.ARI~(nON
,. -)~FFICe
Dear John
As I mentioned the other day that it concerns me greatly when decisions are made based
on public opinion and not good science. I am referring to the council decision to have
staff review the use of cosmetic pesticides when there is probably no person either on
council or on staff has the expertise necessary to make this recommendation.
The Pesticide Management Review Agency or PMRA for short is the federal agency
responsible for registering all pesticides. They review exhaustive studies to ensure that
the pesticide is safe to both humans and the environment and effective as a pesticide
before a new product is released. In addition they periodically review previously
registered products to ensure safety. PRMA has a call line at 1-800-267-6315, which will
answer any questions or concerns. It is not my position that concerns should be ignored
as every once and a while product restrictions are changed for safety reasons. These
decisions should be made by experts who are properly qualified. In my humble opinion
concerned individuals should be directed directly to this agency not dealt with by local
councils.
Unfortunately many people look at only one side of the equation and as a result miss the
benefits of a good healthy plant life. I have included several articles on this matter.
While talking with PMRA on buffers between farms and urban areas I talked to Shawn
Develin at PMRA. I believe his expertise has to do with human effects and his direct line
is 613-736-3849. He might be worth a call.
Another source of information for staff might be Jackie Fraser, Executive Director of
AGCare in Guelph. I am told she has talked to councils and staff with regards to this
issue. She can be reached at 519-837-1326 or ifraseriWagcare.org
Please make this decision based on good science not public opinion.
Yours truly,
Ted Watson
Cc Gord Robinson
Jim Schell
a2-A~r-ll 12:)'
FrOl-PLANT P?ODUCTS
1~3963l
T-232 P.OT/OS F-564
A SCIENTIF/O VIEWPOINT: Dr. Thomas L. Watschke
iurrgrasses: Ca. Safel, Cleal Our Water Supplies
FiIIdfDa 1; Warcr I'UDIlinJ of! or pMIiD.
throuJb . well mmaaed la~ is DCIllibly
to be of significaDlly low.. quWily tb8D 1M
lip water avan.b1c ill maD)' icititll.
FIDdiDt 2: ~ ~nlr. 91iecl1U auf-
ansa ce uapped withiD cbf: IbIfcIa IDd
rDOtZOae areas of the plam 111ft do DOt COD-
tammale water suppUes. I
F1DdIDa 3: LaWlIS -.b1i~ with tuf-
lP'us sod are up 10 IS ~ more effec-
tive ill coatroWDa nmoffl dum seed-
established I&wu. CYCIl afte~ dIMe years.
Fears of 1ddiD,IO cur ~ wacs
from bomeowDer or co~ IawDcare
are areadY uafounded . over-....
bUecl OD Ibc mulli of. -yarltady
of Wiler qua1icy ia:IpIlct .. The
PCllDSYlvlDia SI* U , In fIct. Ihe
resulu ibDw tbat'Mill 1Uff__
have wry Utde runoff vIrtuIDy DO
poICDIW for cblmica1 . AI'-
plkaIioas of dac fiDdiaas to J.ad..uIe. c:icy
planDers I.IId IIlYirv iaterab an
very promism,.
Funded ill larp auru by dlc U.S.
GeoloJica1 Survey, tbiaaWU iDid8IIed
ill 1986 to eu.miDe &he w quaUty im.
pIICt of pesdctdes aDd ued Ja lbc
wbaD 18Ild1elpt. A tGIIl of ~ rat pIoIs.
with slopes raqiDa fromftj9!tO 14 pIrCIDt
wen: prepared fOr cbe 1QIdy. Water NDOff
and leacb.de trappbIa IDl!UUriDa
devicea were iDstaUed on plol, fol-
lowed by the u-n.riM of ida:IicI1 itrtp.
tion lysteI:DI IIXl IOU . A 10-
philcCIIed array of' iIlItrumeats
aDd apec1a1iYed compaICJ were
coDDeCled II> IDOIlitoriDI 110 mea-
.ute ud rcQOrd ..bat was pIa::e CD
each felt plot.
Three of dle pIoCs were willi .
aWtNrC of lCeDtUcty blue ..-w
ryeBJUSl1ble r.:ae, 1:hnle odIcn
were seeded wida . ..~" lab of
lDDual rye. COIDIIJOtl KeaIu/cky blUIpIII
aDd mepm, red fcacuc. 1lbc fiDa1 tbnc
UlIl plocs were eovered wiIb j1bree-yelf-oJd
tUtfpllOd JroWD from ~ Dlead of 100
pctccIJt certified ~blaepaaca.
1be plots were weekly . .
heiJbt of two iDcbeaw Ii- row maual
aumxDU OfpcaU~=
ICCOrdaDce wftb WJcJ .
After eIIIbUIbalea. ... ippI.ied
ollly wbeD Ibe .... to ~ n-<<...
ICbeduled (rwo .'5 after !die cbemk::Ua
bad heeD 1ppHed). r
...... R.....
To examine IbI: """"'1 cffef;cs of turf
DB ,.,.. cpality u . tucdoII oIl'l1DDff.
PeaD $we reacardMn .... a caref'aIly
CODUDlled irripIioG .yMeID ID UDlformly
apply kDowIl ......... of waw to die tell
....... A.tt<< fIIiliD& eo .. mill the
sup.. amowa of I'UDDIf I'rom ... 1Od-
ded.. will iJ'ripIioD .ndclaI equl
tel . ,1adt per bOUI' -. dac S>'*ID .....
revamped 10 c:re8R . ~iDdl per bour Olll-
1* iD order 10 be able 10 collect naaoft'
from IodcW slopes fw chemicaJ analysia.
AcclOI'diII to niDfaIl prcbIbiliIy daIa. .
aix-iDcb per baur ... .. CI8II'II Faa-
syt,,1IIia II DOt Iikdy ID ncr occur.
CJl.\RT J: RVNOrr, ........ applied
a
,pmII
I I
,I I
0..
CUIK canIota ..
~w. ~ tvNjf"'",,, .",pur
txI'IW ",.,.....".,.,.. .....
Tbe IOCIded ... p10a prowd ID be
IS-dmes __ etfeaM dwa... of die
.....-s plots at CDIIIrClIba nmoIt o.ty
0.8S of all of cbe water applied wu col-
IeeMd at IWIOft' from 1M Iodded anu
wbiJe 13.." rua oft .. "comNefIDI'''
.... ..... __... 11.6S ..... off die
dusic:..s ..... 'I1Ie lS.f'cId.... nmoft'
CIIAIlTD:
coaD"OlldvuJtqe fur !be IlOdded a10pes has
lipiftcaDt eavironmental implications
bocauIc Ibere would aIIo be _likolihood
IbM !be ... would coaatia IipiftC&llC
8IDOwaII of lOdimear, chemicals 01' other
patcIItial ponutlDts.
LeIcb.ate coDectiOD ~evtces were also
aaed to captUre waller percolatiq tbroup
tbc IOil 110 dccamiDc ill cbemic:al c:om.
paIltioD.
CIeu Raaoft Disclo.erecI
Wbcu uaJyziq rhc nmotf _leachale
at 0111 part per billioD (equal to oae teas-
pooD of.... iD 1.3111illiaD pOoas of co!-
-). reaeudJen fowd aImoIl DO detect.
able amouatI of the tipt peatici4e. IDd
Dw1aD that bid been applied Ie Ihc lUrf.
In fla.1n. VIS1lDlUority of die rau. the
ebImic:I1I.... DOl evea de&tctId or were
below die federal cIriakiDa Mfa' IteDducI
(see Chart D).
Wbi1e cbere arc DO federal driDkina
wa&eI' -..dank for mmy of _ chemicals
~ IbcM by N/A). me nmoff and
"'.ltlUDJlles pnenIly CODIaiDed less
poIU'- ... &he Irriptioo water that
wa uud. 11aia seems to further Ul\l6U1lte
die If.. pllat'1 caplCicy to trap and bold
DI8IlY of Ibc ebanicals dlat . souad turf
-~ ICbeme would require. It is
1110 ~tld II> nmtaj)e( Chat the water
aampIalDl1yzed were YinuaUy co1*ted
in I situIdoa _hlplllO uautHidc". In
. "fIII-UIa" ....~ CDDSiderabIe ranatF
.... hID odIIr --. would llMdy be
ill lbe IUIIt 'NIIid1 woukl raak in Iipifi-
cue ~ of IlreIdy low ClODCaUldons
of cbeasaa..
.......... Appt. ~._ oIl'111d1ap
WbeD ""...'" ~.hd widllbe 0Ibef baWD
N..... 01
F....... NIaBer of NamINr tl 0... Below
Nwt.... DIiMIII ..... .... Net 0rbIIdIII w...
~ W.... LIaIII DaUI o.t.dIble LImIt
Niulfe.N 10 JlIlIIl 29 2 28
2, ....0 100 .... 2.. 10 20
IMc.aba 210 ... 24 I 23.
PboIpUte-P N/A. 29 9 N/A
Poaalum N/A 29 I N/A
~"'-""'I.. N/A 24 24 N/A
2,4-DP N1A :u 12 NJA
0I0IpyIb N/A 24 24 N/A
1
P"
02-Aor-ll 12:12 Froll-PLANT PRODocn i939€32
attributes of Mf;rass suc:1l U CODvenkm bssa It COD5IJ'UCIioo Iia, farm fic:kb IDll
of F&Cbon dioxide to oxy,en, c:ooliD8 ef- hiJllway ripu..ot-way.
fecu, cntrapalalt of particulare poJJuti<lft While additioaall'ClW'dl ia required to
and reductioD of IlOfse ... san. nuf'a determiDe die surfiK:e areas of turfpus
water filteriDa capacities imake it . very Ieeded to belt aerw ita JlWpOIeS on
gooc:l candidate for addi1ioDaJ em iaOlbDlCDt variOUl soil types. p'Idc:s IUd IIIbInIJ
improvement projects. . nmoft' KIlOIJJlfS. cmsiderabJe propss Is
Oirectilla urbul nmoff waten acrou beiDllIlIde in RlCDpiziDs !be maay UIIique
turf and P05l1'bly iIIIo ~ <:OVered baaiu c:apabilitica of the ecemiqly limple &rUI
could provide DOt DIlly . ~a1el' "~"-ma plain.
effect, but aIIo assist in: ' What bu beeR rip aacIm' 0lIJ' reet for
a. flood cocnrollDd ~rcby . rcJaled maD1 years is ~. to be JeCOpized
reduction of w8ste water ~ fadlj. for the comribudoDs it CIIl make D im-
ty requiremeacs;! proviq O\IC envUoDIIIeIIL Just as it is man
b. ponUIiOD control ~m parmgloc who is creatiDa eaviromacmll probJcm&,
and/or IUlimaJ feedlcx 1'U$1f wateR; and it will be up to ... to beacr ~
~. rcduetion of ailtariPn ad toplOil lad propaly use Ibe 100Ia of eaniroMuent
~-1bI! rfgrass Pacts
A~ STItUGE Aur DUS
/~Ii . ~=O~~~~8 ..
/ .4 THE COOLING EFFECT OF
I ABOUT 70 TONS OF AIR
CONDITIONING-THE
AVERAGE HOUSE.sIZE
CENTRAL AIR UNIT HAS A
3 10 " TON CAPACITY.
GRASS AND SHRUBS ALOHG
INTERSTATE HIGHWAYS
RfLeASE ENOUGH OXYGEN
VIA PHOTOSY"ITHESfS TO
SUPPORT THE NEEDS OF 22 .
IMUJON PEOPLE.
2
r -232 P. DBle8 =-554
impmvemam we have availabl~ 10 111, par-
ticularly 1Wfaraaes.
.....~ NtM: Dr. 77tMtGr
L WG#dlk6is4Pro~_
~~~4111w
I'fM81lWl1ll4 SItJII Un{-
WlI7ily. f.,'1IINnIty Port.
,..,.",.... 1h " rAt
Dinaorqf.~
~f. . ItItIlIIJI8IfICrJI R.uarc:h
.. C4ttur, """" M c001-
. 6wlu die mM1'Cll ce-
. livldetfl-k1/1oMJ'N
..,.... ..... OA,. "...~. Ih II.
pal." M_ If .. N.m'.,ma W..., ~
Son.".. ~z.a afdw 7lufirw1 DiIli6itHl
qflw ~.ron"yfJ/ ..,,~. lit IIIIIliMII to
JJu ~ MIl ,,_eII ruptJlUibilltlu IIZ P_
SAw. Iw,.. 1IlriIIa 8d..... _UN" .. IN
MJut~..... MIl ill TOM ill du '.I!/~.
GRASS BLADES TAKE
IN CARBON DiOXIDE
AND THE WORST
ATMOSPHERIC
POLLUTANTS TO GIVE
BACK PURE OXYGEN.
r.;'-Mr..li 12:;]9
"ro~-PLANT P,ODUCTS
rS39E32
T-m P 02
1=-554
In Praise of that Darned Grass (that Always Needs Cutting)!
As one of North America's fastest growing hObbies, gardening bears greater fruit than
simply ther~peutic relaxation that is fun for the whole family. Does that mean there is
more to gardening than lawns, flowers, trees, fruit and vegetables? You bet!
Gardening i~ one of the few pastimes that actually improves the wand in which we live.
Hobbles a~ generally seifish pursuits, usually enjoyed by individuals and their
immediate friends and family. How many hobbies can legitimately claim to improve the
environmelit and indeed the countryside? Gardening certainly can.
Gardeningl provides exercise and has a therapeutic effect on the mind:
As a form ~f physical exercise. gardening is good for the bOdy. Whether pushing a lawn
mower, dig,ing a vegetable garden. weeding the flowers or raking a lawn, vigorous
physical ~vity is involved. Furthermore, the activity usually lasts for more than a few
minutes an~ of course, the activity Is outside, surrounded by fresh air. There is also
mental sti""ulation. One normally thinks of the task 8t hand. Instead of the problems
eartler that CSay. Think about it. You may be stressed after a long day at work. but after
twenty min~tes in the garden, you don't really think of the problems of the workday.
Once in th~ garden, the mental and physical stress levers drop significantly.
Gardens tend to help the healing process:
Some rese~rch indicates a strong correlation to a shortened recovery time after an
operation, f,or patients whose rooms overtook a park with lawns and trees. The studies
compared tJ,e recovery time of patients who underwent the same operation. in the same
hospital. TIlOse with a View of the park. recovered faster than those Wftnout a view.
Nursing ho~es are also using gardening as an acttvlty for the elderly. Gardening Is not
necessaril~ an outdoor actMty. Those involved with the gardening programmes often
appeared ~ better enjoy their lot in life and looked forward to the activity. It gives them a
sense of p~rpose and accomplishment. Studies also show that mental stimulation is an
important t;ctor in helping to minimize the effects of conditions often associated with old
age.
There are ,mportant sociological benefits to gardening:
There are numerous examples of inner-city gardening projects such as The Oakland
Tree Task Force in Oakland Calif. and the Philadelphia Green programma. In Oakland.
local residElnts were organized to plant trees in the neighboumood. with aid coming from
a local citjz~ns group. Much of the work was perfonned by residents. Not only did It help
to beautify ~e community. but It brought people together. Now there was a sense of
community i of shared ownership and commitment.
Other innert-city projects have had a similar impact on their cities. Gardening projects.
tree planting, painting, or fix-up parties give the residents a sense of community
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involvement. The resulting community pride and sense of well...t>eing helped to transform
the otherwise depressed neighbourhood into a vital community.
Lawns and; turf provide a soft playing surface and help to reduce sport injury:
Lawns and playing surfaces that are well designed and maintained are safer to play on.
The turf prqVides a firm, level surface for the foot. It also helps to cushion the jarring to
feet. ankles! and legs. Better footing and traction are to be found on good turf. Bare
spots are slIppery when wet and harder to land on when someone falls. Numerous
studies show that a dense. wetl maintained turf playing field contributes to fewer sports
injuries tha~ synthetic playing surfaces and improperly maintained fields.
One study .hOWed that when a dozen eggs were dropped eleven feet and landed on a
dense, 2-inCh high grass playing fiefd, none broke. Two thirds of a dozen broke, when
dropped f~ the same height onto thin turf. All the eggs broke when dropped from just
18" onto an all-weather track.
lawns areloxygen generators:
A healthy I~wn. commonly measuring SO' x 50', generates 8 significant amount of
oxygen. Th~ better the condition of the turf, the more oxygen the lawn will produce.
Collectivel}1. these lawns can be a considerable generator of oxygen. In the United
States, it iSI eatimated that the grass and trees which line the interstate highways,
prodUce e~ugh oxygen to support 22 million people.
One acr~e of trees supplies enough oxygen to meet the needs of 18 people. According to
the Am . n Forestry Association. a mature tree can generate enough oxygen for a
family of 10, r.
They also ~ool our cities and reduce our energy costs:
The cooling effect of lawns and trees has been a well documented fact for some time.
The front ~s alone, of just eight average homes, can have the same cooling capacity
as 70 tons Of air conditioning. The average house-size central air conditioner is 3 to 4
tons in the I~.S. were temperatures are slightly warmer than in Canada. By the same
token, a la/[ge tree can have the same cooling capacity as fifteen room-size (4000 BTU)
air conditiohers.
This coolln~ effect can be demonstrated in many ways. On a hot day, the surface
temperatu'" of a lawn remains at approximately 750 F I while the temperature on the
sideWalk ot street can be well over 100 OF. It is not hard to see why it is much cooler to
walk on a I.wn than on pavement, on a hot summer day.
Direct comparisons to air conditioners are not the only cooling benefit to be enjoyed.
Energy s8'.(ings of 18 to 50 percent can be realized when trees are planted close to air
conditionecjt buildings. This reduction in cooling costs is realized most, when the trees
start to ft.1I ~ut, at the age of 15 to 20 years.
This reduction In energy usage may also have a direct impact on the carbon dioxide
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levels in the atmosphere, depending on how electricity is generated. By the same token,
trees planted around buildings act as a wind break. Reduced heating costs of 4 to 22
percent hav$ been observed due to the reduction of wind speeds around buildings.
Using less heating fuel in winter months also lessens the atmospheric levels of carbon
dioxide and ;other greenhouse gases.
L.awns redQce noise pollution:
Lawns, tree~ and omamental shrubs have a noticeable effect on noise levels in our
environmen~. Blades of grass and leaves of different shapes, sizes and densities act as
filters to ab$orb the sound around us.
In one stud~, a particular variety of bluegrass was rated better at absorbing sound than
a heavy cart>et on a felt pad. Another study shows that graS& planted on an upward
slope, leading away from a freeway, can reduce the noise levels from 8 to 10 decibels A
row of treeS 100 feet wide will similarly reduce noise levets by 8 to 10 decibels.
Trees and 'awns absorb pollutants from the air:
Plants absctrb carbon dioxide during the process of photosynthesis. Simply stated, the
leaf uses t~ carbon and releases the oxygen. It is estimated that one acre of trees will
annually remove 5 tons of carbon dioxide form the atmosphere. According to the
American f1>restry Association, a mature tree absorbs 26 pounds of carbon dioxide
annually. T~at is roughly equal to the pollution created by a car driving 11,000 miles.
Age and v~our of the tree is an important factor. Comparing healthy trees. a 50 year old
sugar rnaplr will annually absorb 120 times more carbon than one that is 10 years old. It
is thereforej critical, to property care for trees so that they can reach the mature stages
~f their hfe pyale.
Dust and dlrt released into the atmosphere by cars and industry are trapped by grass
and leaves:of other plants. These trapped particles get washed off the leaf surface by
rain and WiJter condensation. They fall to the soil surface where they can re-enter the
living soil. i
lawns act as a water fitter:
There hav~ been many studies conducted on runoff water from lawns and turf.
Interestingly, these studies report that there are few contaminants that leach out of turf.
In fact, laWfls act as a sponge and actually hold the water that falls as rain or is applied
through a .prinkler.
According .0 research by Dr. Thomas L. Watschke, Professor of Turfgrass Science at
The Pennsvlvania State University, fears of pollution from commercial or home owner
lawn maint,nance are unfounded. During the studies, it was difficult to get any runoff
from the turf, until1he rate of irrigation was increased to simulate a 6 inch per hour
rainfall. At this rate of watering, the runoff contained almost no detectable levels of the
nutrients o~ pesticides that were used on the turf. They al80 found that the runoff water
of 8 well managed lawn is fairly comparable to the tap water of many cities. The thatch
layer and t~e root zone of the lawn trapped the chemicals that had been applied and
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they did not contarr.inate the water.
Lawns havE? proved to be far superior to most other forms of vegetation in preventing
runoff and fpr hOlding the soil. Maintaining a healthy turf is one of the best methods of
preventing Water and wind erosion. Furthermore. the roots growing in the soil are one of
the best ways of conditioning thesoiJ. So even while the grass is preventing runoff and
soH erosion; the roots continue to improve the soil in which it grows.
Healthy turf/has many other important attributes such as its ability to reduce glare and
reflected ligtlt. " is therefore easier on the eyes and less fatiguing for drivers. which in
turn makes bur highways safer. A good lawn is a natural fire retardant. It even
discourage~ small pests and rodents from living next to houses. These examples are
only a few ~ the other benefits of 8 good lawn.
This short article is by no means comprehensive. It cannot possibly do justice to the
attributes o~a good lawn, nor the exhaustive studies that have been carried out by
researCh pr~fe8SiOnals over the years. Hopefully, it will cause us to be more appreciative
of the gree~ carpet that not only beautifies our homes, but improves our living
environment at the same time. So feed your lawns and gardens. Take good care of
them and enjoy them both in the process.
I
If the rest of,the family is lucky, ... perhaps... just maybe, we won't complain 80 much
the next tim~ we have to cut the grass.
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References
Beard, James B. Even Tan or Brown Lawns Benefit the Environment. International
Sports Turf Institute, College Station Tx.
Beard, Jam~ B. Science Shows Turf Can Save Our Water Resources. Texas A & M
University, College Station, Tx.
Crop Protec(ionlnstitute. Pestioides: Home and Garden Use. Backgrounder.
Hull. Richard J. Psychological & Physiological Benefits of Greenspace. Soorts Turf
Newsletter. December, 1994. Originally from Golf Course Manaaem8f1t, August
1994.[ Based on an address by Prof. Hull to the Turfgress Section of the Crop
Science Society of America Conference, San Antonio, Tx. October 1990.
Pirone. P. p~ Tree Maintenance, 5th edition. New York: Oxford University Press, 1978.
p. 3-4~
RISE. Pestiqides in Your Environment. Washington, D.C.: Responsible Industry for a
Sountl Environment.
Roberts, Eliot C. & Roberts, Beverly C. Lawn and Sports Turf Benefits. Pleasant Hill.
I .
Tenn.ssee: The Lawn InstItute. 1987.
. National Arbbrist Association & Intemational Society of Arboriculture. The Importance of
Larg. Tree Maintenance in Mitigating Global Climate Change. OctOber, 1991.
p.2 -$.
Watschk8. 1'homas l. Turfgrass Can Safely Clean Our Water Supplies. The
Penn,ylvania State University, University Park, Pennsylvania.
Dave Watsoh
Plant ProduQm Co. Ltd.
June 26,199p.
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In praise of that c;larned grass!
If you take a stroll !through your neighbourhood on a Saturday morning
in the spring or summer, you'll see homeowners busy trimming or
fussing over the gr~en carpets of turf around their homes. Why do we
tie ourselves to th~se seasonal chores? What do our lawns give back?
Exercise and rela'xatlon
As a form of exercl~e, gardening is good for the body, whether you are
pushing a lawn mo~er, raking the lawn, or weeding the flowerbeds.
Caring for your la"';'n keeps you outside and involved in physical
activities. It's also ~ great way to switch your mental focus by
concentrating on your gardening tasks instead of the stresses of the
I '
day. I
Green gardens h.lp healing
Just a view of the garden may be all we need to feel better. Some
research shows a ~rong correlation between wellness and a scenic view.
Patients in the sarrje hospital, recovering from the same operation,
recovered more qu;ckly when their rooms overlooked a park. Nursing
homes also use gardening programs, both indoors and outdoors, to help
residents retain a ~ense of purpose and accomplishment, and to provide
the same mental c~a"enges that appeal to gardeners of all ages.
Please play on t~e grass
Lawns and turf plat.ing surfaces that are well designed and properly
maintained help to reduce sports InJuries. The turf provides a firm, level
surface for the foo~. It also proVides better traction, and helps to cushion
the Impact on athlfttes' feet, ankles and legs.
In one American s~dy, a dozen eggs were dropped from a distance of
11 feet onto a dense 2 Inch thick playing field. None were broken in the
fall. When a second dozen was dropped from the same height onto a
thin turf, two-third$ of the eggs were broken. When a third dozen was
dropped from a he,ght of 1.5 feet onto an all-weather track, all of the
eggs were broken i~ the fall.
Lawns are oxyge" generators
A healthy lawn, commonly measuring 50 feet by 50 feet (iSm by iSm),
generates a slgniflctant amount of oxygen, and the better the condition
of the turf, the mo~e oxygen It will produce. The trees and grass that
line the Interstate ~Ighways in the US produce enough oxygen for 22
million people. '
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Lawns are air purifiers, too. Dust and dirt released into the atmosphere
by cars and industry are trapped by grass and leaves of other plants.
These trapped partjicles are washed off the leaf surface by rain and
water condensatior;, and return to the living soil.
Staying cool
On a hot day, the ~urface temperature of a lawn remains at
approximately 750!F (240C), while the temperature of the sidewalk or
street may be well lover 1000F (38 oC). It's not hard to see why it is
much cooler to walk on a lawn than on pavement on a hot summer's
day. The front lawr)s of just eight average homes will cool as much
outside air as 70 tQns of air conditioning, or about 18 to 20 average-
sized central air cohditioners.
Lawns reduce n~' se pollution
Lawns, trees and 0 namental shrubs have a noticeable effect on noise
levels in our envi nment. Blades of grass and leaves of different
shapes, sizes and densities act as filters to absorb the sound around us.
In one study, one tariety of bluegrass was shown to be better at
absorbing sound t~an a heavy carpet on a felt pad. Another study
showed that grass jp/anted on an upward slope, leading away from a
freeway, can reduqe the noise of traffic from eight to 10 decibels.
Lawns filter wat.r
Lawns act as a spo"ge, and actually hold the water that falls as rain or is
applied through a ~prinkler. According to research done by Dr. Thomas
L. Watschke, profe~or of turfgrass science at Pennsylvania State
University, turf ca~ absorb all applied water until it was applied at a rate
of six inches per h~ur.
I
Even at this extre"/le rate of precipitation, the runoff contained almost
no detectable leve/~ of the nutrients used to fertilizer the turf. The
thatch layer and t~ root zone of the lawn trapped the fertilizer that had
been applied, and revent it from being washed away. Based on this
evidence, Dr. Wa hke concluded that fears of water pollution from
careful commercial. or home owner lawn maintenance are unfounded.
His studies Showe~ that the chemical analysis of the runoff weter from e
healthy and well- aintained lawn is generally equal to that of the tap
water of many citi s.
Maintaining a healthy turf is one of the best methods of preventing
water and wind e~Sion, and while the grass is soaking up water, the
roots are condition ng the soil below. Fertilizing your lawn, following
label directions on he product package, will provide the nutrients your
lawn needs to gro at a healthy rate and resist disease.
A lush green carpet of healthy turf not only beautifies our homes, but it
improves our Iivingl environment. Feed your lawns and gardens; take
care of them and erjoy them, and try not to complain so loudly when It's
time to cut that datned grass . . . again.
,
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