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WIP of 04/05/00, 1999 Pest Management Annual ReportItem I WEEKLY INFORMATION PACKET > i TO: Mayor and Members of City Council FROM: Ronald A. Secnst, City Manager Mike Weil, D~rector, Environmental Affazrs Alice Guthne, Environmental Specialist, Environmental Affurs DATE: Apn15, 2000 SUBJECT: Information Item: 1999 Integrated Pest Management Annual Report Background - IPM Policy The Integrated Pest Management (IPM) pohcy was approved by the City Manager m 7uly 1993. It appl~es to all pest control operaUOns and peshcide use m buildmgs, facilrties, grounds, open space and other property owned by the city of Boulder Over 36,000 acres, 440 housmg units and over 200 city buildmgs are sub~ect to the city's IPM policy and programs. The IPM policy requ~res that departments conduct~ng pest control operations submit an annual IPM report to the Ciry Manager and Council detuhng the previous year's IPM efforts In addiUon to ttus report, staff has developed brochures and educaUOnal matenal for Boulder residents on the crty's IPM efforts and how they can use IPM pracUces to reduce the use of chectucal pest control methods at home or work. The overall goal of the policy is to reduce and, where possible, ehminate dependence on chemical pest control strategies. Mimmizmg impacts to human health, the environment, and non-target orgazusms aze considerahons m choosmg control strategies The pohcy assumes that all chemical pestrc~des aze, at mmimum, potent~al[y hazazdous to human and environmental health; therefore, reasonable non-pest~cide alternatives aze grven preference over chem~cal controls The essenual elements of an IPM plan mclude the followmg. IdenUfymg pests (msecu, weeds, vectors, vernun) that pose a threat to crty resources or users of ciry property. Establislung in~ury levels/threshold levels of pest mfestation, above wtuch control strategies aze imt~ated Selecung a control strategy which emphasizes the most environmentally sound approach to pest management. 1999 IPM Programs The followmg departments and divisions currently performed vanous types of pest control operations for weed and msect conh~ol m 1999: Housmg Authonry, Open Space/Real Estate, Pazks and Recreavon (Athletic Fields, Boulder Mountam Pazks, Boulder Reservoir, City Pazks, Flat~rons Golf Course, Forestry) and Publ~c Works (.Airport, Facihties & Asset Management, Streets and B~keways, Wastewater Treatment Plant, Water Uhlities). For 1999, the mterdepartmental IPM group is reportmg all methods used m their mtegrated pest management programs. In the past, staff has repoRed pnmanly on the chenucals used and o[her methods have not always been reported. Staff wants to provide City Council a more complete picture of the IPM programs and put Ihe chenucal use m context with other methods for pest control. In 1999 ciry staff practrced Integrated Pest Management treatrnents on over 15,000 acres of city pazks, bikeways, med~ans, athletic fields, golf courses, building complexes and natural lands. A vanety of techmgues were used, although mowmg ts the most common techmque for weed control 2750 acres (18 %) were treated wuh pesticides m 1999, compared to 2451 m 1998, which did not mclude acreage for all crty departments. City Forestry staff treated 768 trees with chemicals, although 44% of those were treated with msecticidal soap, wluch is hsted as a pesticide but is non-toxic 1999 City of Boulder IPM Program Summary IPM Treatment I Number of Acres I Percent of Total I Common Techniques Mechamcal * 10,794 71% Mowmg, hand-pullmg, aeration 8 trees Cultural 637 4% prumng, mulclung, bat boxes, 1783 trees housekeeping B~ological 1049 7% mtroducuon of predatory msects Chemical' 2750 18% spot-spray & conventional 768 trees apphcat~on. Total 15,230 100% * Not all areas sub~ect to mechamcal treatments aze mcluded m acreage figures due to the d~fficulty of quannfymg and measunng all azeas See program summanes for explanahon of areas treated Includes 300 acres of pazks mowed 28 nmes per yeaz and 400 acres mowed tw~ce +Acreage dces not mclude trees, which aze Lsted sepazately All of the crty IPM Coordmators cont~nually stnve to reduce the use of chemical controls, as part of an mtegrated pest management program. Vanables that can mfluence the amount of chenucal control urihzed m a year mclude• - vanations m msect mfestauons due to weather, ~ hmmg of raznfall and speed of plant growth for compeht~on from weeds, and ~ acquisit~on of Open Space and Mountazn Pazks properties that may be heavily d~sturbed ~ or mvaded by noxious weeds 1999 IPM Highlights The Interdepartmental IPM group met four umes m I999 Some accomphshments from the year ~ aze hsted below. 1. Standardization of pesticide signs. The city IPM group developed a standazd notificahon sign to be used for pesucide apphcat~ons on all city property begmnmg m 2000. It goes beyond the requuements of the city's Pesucide Ordinance and mcludes product, target pest, herbicide or msecUCide, date of not~ficauon, expected date of apphcatron, and the name, phone number and department of a city contact. It is lazger than required by ordmance and will be posted for all pesticide apphcahons, not ~ust aenal apphcahons as required by the ordmance. 2. Standardized reporting. The IPM group is usmg a common reportmg format that includes all mtegrated pest management methods and will allow better companson from yeaz to yeaz. 3. Record-keeping and ~eporting. City departments shazed expertise and expenence m trackmg IPM techmques for mechanical and cultural weed control, such as mowmg and weedmg operahons. In ma~y cases, rt is difficult to track acreages treated. Some departments mcluded hours devoted to mowmg or hand-pulhng weed control For mstance, Mountam Pazks spent over 1600 hours on weed control m vanous locations. The Flahrons Golf Course mcluded aerahon oF ponds as a mecharucal control mstead of chemicals to control algal growth. 4. Reduction in amoant and types of liquid pesticides applied. In 1999, city departments reported using 427 gallons of chemicals, down from 524 reported m 1998 It is difficult to crte one pazticulaz reason for the declme, smce tkus mcludes chemicals used on natural lands, as well as urban areas. Some examples, however, can be hsted. - Mountam Parks apphed chem~cals to 34 acres in 1999 compared to 107 acres m 1998. - Crty Pazks spot-sprayed 313 acres for weed control and mowed ciry pazks weekly for 28 weeks for a total of over 9500 mowed acres. ~ Forestry used msecucidal soap (non-toxic) for brownheaded ash sawfly control instead of the pyrethroid msechcide used m 1998. ~ Stteets and Bikeway Mamtenance has reduced total chem~cal use to 25 gallons (compazed [0 123 in 1998) by applymg spot treaunent of chemicals m as many situahons as possible. ~ Boulder Reservou used hand-labor (weekenders) to weed m 1999. Approlumately 17 acres were mechanically treated and only 5 acres chemically treated. ~ Open Space uhhzed prescnbed fire as a mechanical control on 132 acres and 16 miles of irngauon ditches - Housmg Authonty reduced the use of Seige bait by over 75% from 1998 ~ Comparison of Chemical Use -1999 and 1998 1999 Liquid 1999 Dry 1998 Liquid Division Chem. (Gals.) Chem. (Lbs.) Chem. (Gals.) P,irport 3.0 120 3.8 Athletrc Fields 10.5 5.6 Boulder 5.0 2.5 Reservou City Pazks 63 43.7 City Forestry 39 7 3 7 (36 8 gals msecticidal soap) FAM data not avazlable F1aUrons Golf 3.9 960 4.6 Course Housing See attachment for See attachment See attachment for Authonty detads for deta~ls details StreetsBikeways 24 5 123 3 Mountain Pazks 4 8 18 8 Open Space 318 8 20 318.9 Water Utlltues 0.3 Data not ava~lable W W'I'P 10 6 Data not consohdated TOTAL 427.4 1100 524.9 2000 IPM Initiatives 1998 Dry Chem. (Lbs.) 0 420 See attachment for deta~ls 0 1. Cooperate with the University of Colorado IPM staff. City stafF has commumcated mformally wIIh CU staff m the past. In 2000, we will conduct more orgamzed ~omt meehngs on top~cs of mutual mterest and look for additronal ways to shaze mformat~on and expertase. For mstance, CU held an IPM Forum m Mazch and c~ty staff attended. 2. Review feasibility of designating at least one city park as pesticide free. Pubhcize and use as an educahonal opportumty for the commumty , l~ 4 3. Research and compare amount and volume of pesticides applied to crty pazks versus residenhal lawns and commercial landscaping. The city IPM staff has records of amounts ~ apphed to pubhc lands, but not to pnvate landscapmg 4. Continue to look for ways to reduce use of chemicals and utilize less toxic compounds. Ttus is an mtegral part of an on-gomg IPM program. City staff will momtor for pests before control measures aze utilized, and look for ways to reduce the potential for pest mfestahons. Please direct comments or questions to Alice Guthne, Office of Environmental Affairs, 441- 1915 Attachments Attachment A: Pazks Drvision IPM Report 1999 Attachment B Ciry Pazks Report Attachment C• Flahrons Golf Course Report Attachment D City Forestry Report Attachment E: Boulder Reservoir RepoR Attachment F• Boulder Mountam Parks Report Attachment G: Athletic Fields Report Attachment H: Median Mazntenance/B~keway Report Attachment I: Airport - 1999 IPM Summary Attachment J: Water Ualit~es Report Attachment K. Wastewater Treatment Plant Report Attachment L Open Space Department Report Attachment M• Housmg Authonty Report 5 Attachment A City of Boulder ~ Parks and Recreation Department Parks Division Integrated Pest Management Report -1999 The Pazks Division is responstble for the maintenance and opentions of over 1400 acres of developed and undeveloped urban and developed ciry pazks, the developed portion of Boulder Reservo~r, Flatirons Golf Course and over 40,000 street and pazk trees throughout the Gty. The Parks Division momtors the usage of peshcides and herbicides in maintaining the pazk azeas. The following is a brief synopsis of the 1999 Integrated Pest Management usage at each azea mazntained by the Division. City Parks -The City Pazks sechons maintams approximately 1000 acres ofpublic parkland. Weed control is accomplished through mechazucal methods (mowing/aeration). The staff mows 300 acres of urigated bluegrass one tune per week from April through October. This acreage is aerated 1-2 times per year. Approximately 400 acres aze rough mowed 2-3 times per yeaz. The remaming acreage ts treated on a spot basis wrth Roundup or the control is done by hand. The imgated acres aze treated with Roundup on a spot basts as mdicated m the IPM report. Flatirons Goif Course - Flahrons Golf Course continues to use herbicides and pesticides in a controlled, managed way. Most of the chemical controls are done on a spot basis. During the past few years, Golf mazntenance staff have attempted to uhlize a vanery of cultural and mechanical methods to control msects and disease so that herbicide spraying is not needed. Additional ptuning of trees have allowed more sun to reach areas of the golf course, pazhculazly j golf greens that are susceprible to fungus and snow mold. It is anticipated that fewer chemicals will be needed to treat greens for snow mold and fungus wtuch is the main azeas where broadcast chemical controls are used at the golf course. Forestry - The Foreshy Section maintams approximately 30,000 street trees and 10,000 pazk trees. Staff achvely monitors city pazk trees for msect and disease problems through surveys and health status checks. The Forestry Sechon practices all types of IPM control and embraces a total "Plant Health Caze" approach to pest management. Through better species selection, proper placement and a systematic prumng rotation, many potential insect and disease problems aze avoided before they start. Cultural and mechanical methods aze utilized within city parks to control insect and disease outbreaks. Staff works closely with parks planners to rnsure proper species selechon and spacing, qualifies stock and monitors contractors for proper plantmg techn~ques to promote a healthy growmg environment. Park uees are on a 5- 7 year pruning cycle to prune out dead, diseased and dying limbs Mulch nngs are maintained around park trees under 10" diameter to promote a healthier growing environment. Staff will also remove infected trees when they threaten th~ larger tree poputation. Our [PM program for street trees involves c~ty wide surveys for potentially fife threatemng insect and d~sease outbreaks. Staff conducts yearly surveys on both pu6lic and pnvate propecty for ~"! ~ Dutch elm disease and works w~th the Colorado State Forest Service to momtor gypsy moth populations through pheromone trapping Ideally, all street trees should be pruned every 5- 7 ~ years to mamtain theu health, minimize storm damage, and reduce insect and disease outbreaks. However, due to budget constramts, the street tree pruning rotation is every 10 years and only mcludes trees greater than 11" diameter. The Forestry Section does not have a spmymg program for city sh~eet trees, but we do allow properiy owners to treat public right-of-way ~ees under our guidance and direction. Staff continually educates the public through citizen sernce requests, telephone consultahon, Pazks & Recreation brochure articles and press releases. A new City Forestry website will soon be onlme to provtde up to date informauon on insect and disease problems. The Foreshy Section is committed to only using peshcides in pazks when the health of the tree is threatened and altemarive controls aze not avazlable. Staff has chosen not to control mmor problems such as Cooley's spruce gall adelgid and hackberry mpple gall psylhd because these are aesthetic problems and generally do not effect the tree's health. Trunk and soil injechons aze used whenever possible to reduce pesticide dnft. Only the least toxic avazlable peshcides aze used and over hme altematives have been found that fuRher reduced toxicity levels. For example, Astro (pyrethroid msecticide) was used in 1998 to control the brownheaded ash sawfly, while m 1999 our contractors sprayed an equally effecrive insecricidal soap Boulder Reservoir - Boulder Reservoir staff in 1999 began utilizing weekenders to do more mechazucal control of weeds instead of spraying. Approximately 17 acres was erther mowed or had weeds hand-pulled to destroy lmapweed and dandelions. `~.f ~ 1899 IPM Report City Parks Parks and Recreation•-C~ty Parks Bob Peck Mechanical Control Loeallon Targat Specles Melhad Area Trealad (Aens) Cily Parks broad leaf weeds mowirg 8400 (300 aaes mowed 28 Umes) fYI Cily Parks Moad leal weeds mowng 800 (400 aaee rtrowed 211mes) ~ Clly Parks txoad leaf weeds aerelbn 300 (~ acres nawed orwe) ~ PeeA SI Mall broad leaf weed mow~ng 7 PeaA SI Mall broad leal weeds aeretion ~ U TOteI 9510 ~ a Cultural Control Loeetlon Targal5pecles Malhod Area Treated City Pa'ks weeds mukh shrubs and trees 5001rees, ail shrub beds Biologlcal Control Lxatlon None Chemical Control Locatlon Easl Bouber CumrmmNy Harbw Platle MunlGpal Complex Norlh Distrkl Soulh DlslrkA PeaA Slreal Mell Total Terget Specles Blolopical AgantUaed Product Tnde Name Round Up Round Up Rourxl Up Round Up Round Up Saien AcOvalnpredlsnt Glyphosale Gyphosa~e Glyphosata Glyphosale ciypnosa~e Inseclkldal Soap Method What Applled To mulched areaa muld+ed areas mulched ereas mukhed areae TU~C118f~ 8fB89 mukhed areae AmounWol Of Agent Usad Aros Traated or Released Uuanlly al Produet Target Peat Area 7rcate0 (ACrsa) Usetl (OZ) xreed9 6 grassee 53 00 160 weeds 6 gresses 51 00 BC weeds R p2sses 9 00 172 weeds 6 presses 100 00 32 weeds 6 grasses 100 00 141 weeda 6 grassea 0 25 72 ] 13 25 801 idai Galbns 6 26 1989PARK_300 ala ~ ~ ~ ~ 1999 IPM Report Flatirons Golf Course Parks 6 Recraation Departmant - Flatirons Golf Course Dave Brown ~Meehanical Conlrol ~ Loeallon tarpet Speclea Method consislenl mowing et lowar Fletirons Gdl Couree vreeds hek~hls Flehrona Goll Couree waeds menual pullinp and cuitivalion U ~ eerallon ol lurf, mafnlelning v properferlil~ty,overseeding, ~ Flalirone Golf Course weeds monNwirig ~rrigalbn V Flatirone Golf Course elgae Pond aeralion N Q Culturel Conirol LxaUon Target Specles Method FlaWone Golf Courae h~c2ased animal/aviary hebilal Blologieal Control AmounWol OI Agent Uaed w LocaOOn taroet So~~ea Bloloplcal Agent Used Melhod Area Treated Relaased Inlroduclbn of IadybeaUas, a- Flalirom Goll Cou~se Predalory Insecls praying manlis Chemical Control Locatlon Produol Trade Name Aollve Inpredlant What Appllad To Target Pasf Area Traated Cuantly ol Pradud Used (Lba Dry WL) OuaMlry ol Producl UsM 1Gals ~ Helmenth FleNronaGolfCourse SpeGro80FUngkide Ch1oro11rolenN Gollgreens Anthracn 1BpoNgreene 85 Flaliians GoN Couns ConfioM Harbldda Trklopyr CbpyrelM Golf Roughs Cbvar ~~ FlaWone GoM Caurea TA•Esler Herbkida 2~4-D Golf Roughs Broedleel Weeds Z`~ FleNrona Gdf Cource PCNB Fungielde PCNB Gall greene Smmvmdd ~~ Flalkons Goll Coursa FF2 14J3 Fungidde PCNB Gott Greene - soulh sida Srimv~rold 175 Flalirona Golf Couree Orepriel Inseclkide Pyrelhrin New Pirre Treea Zimmertnen MoM ` 0 N Tolel ~ ~ ~ 1989PARK 300 xls ~ ~~ ~ 19991PM Report City Forestry A q F~ .L v ~ Q - Parks 3 Recreation Departmen - ------ - - Ellie BusslSottile L_ ' - - - -- t - Forestry SecNon_ 1 ___ __ - -- - - --- ----- - - ---- - - - - - - - - -- - e~ ca ontro loeedon Tarpat Specles Method Area Trcated _____ ___ _ _ UnlversNy HIA Mierican elm Iree Rertroval - in house staH 1 Iree for Dulch ehn disease ___ __ _ CNy wide Removal - by homeowner Amedcan elm lrees at dly request 7 tree9 for Dulch elm disease _ i__ ___ __ _ TWaI 8 Trees ____'_ _ _ _ ' u ture onuo Lo~eUon Tarpet 8paelea Method Araa Treated _ _! __ __ J __ _ Goas/C,mve. Whlllier, Beseline Soulh aM UnWenily Neiphbahoods AN irees Rolailonal Pruniap 13371reea - _ __,_ _ - Beach, Central PSrWComplex Area, ScOtl Carpentef, SmNh, Spnke Pool, Canyon Pdnte, Hiram FWlen ~----~- Ail 7rees Need6q Prune Rotalbnal Prunrng 286 trees . __ i_ _____ _ _, _ All Parka All irees < 8"OBH Mukhinp - a x 1601rees ' __ __ ~-_ _ Total approx 1783 trees _T _ _ _ _ __ B o og ca ontro Loeation arpet Sp~cles Blolopical Apent Usad ethod ' _ ____ __ ~--- n~~~woi ano.~~ ~ An~ Tnahd Usad or Relased __ _ _ - _- ~~ None _ _ _ _ _ _ ' _ ~ _ C em ca on ro ' -- - Lxallon - Product Tnde Nama AcNve InOmdianl _ _ i What AOP~~ad To ~ _____ _ } Ouantly ol Producl Tarpet Pesf Ana inahd Used (Oz) .-_______ _ ___ _ ___ _ __ 18 Park Sllea • dty wkfe __ _ InseclkMalsoaP (Potasslum ealle ol lally M-Pede ISS adds) Irees _greeNwhite ash IreBS~ Aeh s2x41y _____~3J5 Irees ~715 ~ Iria CeMer, Chaulauqua Perk, Keewa In Park, Bear Creak Park Meril Imidaclopnd ~reee • AmerMZn elma, reA oaks end pin oaks EurtpBan elm acab, i Kermes scale 175 trees (soil Mjected) __ _ 36 £ - Pead Slreel Mall Greyhound Abameclm Irees - Ash. Honeylocuel. LNden AphMa, lealhoppero. ' Mitea __~00 Vees pnmk mjeUed) U S Ins Cenler, ChaWauqua Pa'k PeaA Streel MaA SaPoerg Park, S Boulder Recrealbn Cenler, Keewaydin Park end IBM Park Aslro Pertnethnn Oragnet Pem~ethrl~ Dragnel Permelhrin irees - Amencan elms Iree~ • Ash Irees - Auslrian, Scolch aM PorMeroea pinea Elm Berk Beelle ' 221rees I92 C LAadash borer ~35 trees 98 C Zimmertnan P'me Mdh 211 trees 77 E Tolal _ _____~68 trees 5092 7 - ___ _ - - ---~ -- -+-- taa~ cano~s __-__ _ _ __ -_--_- - _~ -- ___'__ _ _ J9 78 1999PARK_300 xla ~ ~^" `~ ~ O ~..i 1999 IPM Report Boulder Reservoir W ~ ~ V ~ 'L' d - ~-- - -J-- -- '-- - - - -- -- Parks & Recreatio~ Department - 8oulder Reservoir __~_. ____; __ Rick Marlowe __ _ ' _ _ __ __ - -- --~ Mechanical Control Location TargatSpecles Method Area Treated Acres i ~ -------- - Boulder Reservoir Knapweed Hand Pulling % Mowing ~~ __f _____ __ Boulder Reservoir Dandelions Mowing and Shovels ~ ~ ___ ___ __. Tolal ~ ~ ~ -- - - - - - Culturel Control 1 ~ Location Target Specle! None Biological Control Location Target Speciee None Chemical Control Locatlon Product Treda Name Used Method Area What Applled To -----; - - - - ~. AmountNol. ~ Of Agant Uaed or Releaaed i _ _____ _ ~_Area Treated QuanGry of Product Pest ; (Acrea) _ Used (Gal.) Boulder Reservo~r- Soutn 1 Side Triox Glysophosale Isopropylamine Sall Various vegelatlon GrasslWeedsL___ _ 0 5 Boulder Reservoir- Soulh Sid Triox Imazapyr Isopropylamine Sall Sidewalks, Roadsides GrasslWeeds ~ _ 0 5 1 Glysophosate N- Boulder Reservofr- South Sid Roundup (Phosponomythyl) Glycine various vegelatfon GrasslVYeeds ~ 2 5 2 Boulder Reservotr- South Sid Weed B Gon flower beds various weed~ 1.5 1 Total ~ 5 0 5 7999PARK~O.xls ~ ~ Attachment F Boulder Mountain Parks ~"'~ 1999 IPM Report Program Scope • Mechanical treatment was tracked m hours since 1995. Total mechanical rime equaled 1,612 hours, up slightly from 1,589 hours in 1998. Mechanical methods included haad pulling, digging, and cumng orees and usmg small hand mowers, tractor mowers, and machetes. The IPM Crew, Trail Crew, huuor Rangers, Volunteers, and other staff camed out mechanical con~ols. • Biolo~cal control of purple loosestnfe at Coot Lake was contmued m cooperatton with the Bureau of Reclamahon and Colorado Drvision of Wildlife usmg biocontrol insects. Bat boxes installed at Sawtull Ponds were designed to improve bat habrtat and help control mosquitoes. • Chemical treatments were apphed to 34 35 acres in 1999 compazed to 107.25 acres m 1998. The reduchon was due to a decrease in area treated for diffuse knapweed probably due to the res~dual effect of chemical treatment. Main Pests or Weed Probiems • Putple ]oosestnfe control at Coot Lake conhnues as a ma~or focus of the IPM pmgram for Boulder Mountazn Pazks. Smce 1994, three insects spectes have been utilized for controt. The adults and larvae feed on the leaves, stems and roots of the plant. Several yeats aze needed for the population of mtroduced msects to reach high enough numbers to adversely affect the loosestrife to a tugh degree. A significant increase in feedmg damage was noted m 1999 m the 15-acre study site. Severa! staff members toured srtes in Jefferson Counry with Debra Eberts, the biocontrol researcher, and saw dramatic results m sites treated for a longer ume than Coot Lake. Annual cutting of the flowering stalks followed by buming helps to prevent seed dispersal. Nearby areas aze monitored for escaped loosestnfe. New plants aze counted, mapped, and treated. • Dalmatian toadflax is controlled by hand pulling in Chautauqua Meadow, Anemone, Red Rocks, and on Flagstaff. A few new small populations were located on the westem side of South Boulder Peak and Koh(ec Mesa. These small azeas aze a pnonty for treatment because controlling small azeas is more Lkely to be effecttve and preventmg wider dispersal m new azeas saves time and funds overall. • Control of diffuse knapweed ts camed out by hand pulling and chemical treatment. At Boulder Resecvoir, prescribed fire has been used wtth great success m combmation with chem~cal and mecha~ical treattnents. Native grasses were seeded m one area, while in another area, reseedmg was not necessary following fire and spot treatment of knapweed rosettes. • Treatment of thisdes varies slighdy for perennial and bienmal species A perenmal, Canada th~stle, was weakened by repeated mowing. Biennial species like musk and Scotch thistle were controlled by dibgi~g rosettes or by cuttiny and dispos~ng of seedheads before they reached matunty. • Bladder senna, a woody shrub that has escapcd from cultivation and ong~nally establ~shed in Sunshine Canyon, is now found in several locations in Mountain Parks including Enchanted ~ 1 ~- Mesa and Gregory Canyon. An effechve treatment was to cut the stems close to the ground ~ and wipe the cut ends with Rodeo combining mechantcal and chemical treatment This method is also used for Russian olive and tamansk. • Medtteaanean sage, a biennial, ts found in the azeas neaz Boulder Reservoir, especially near prairie dog towns or along roads and was treated by digging. Cindy Owsley, IPM Coordinator for Boulder County Pazks and Open Space, has designated Medrterranean sage as the top pnority weed for control m 2000. She is urgin~ mteragency cooperation in an effort to eradicate ttus weed from Boulder Counry. • Machetes have proved effecuve for the control of flowenng stalks ofpotson hemlock~ust prior to seed set. Cauhon was used to make sure that no fluids or portions of this poisonous piant were acctdentally mgested. Mouitoring • Monrtonng of weed populahons by mappmg species and affected azeas on orthophotos and using GIS is updated each yeaz. Mappmg is also bemg coordinated with the Wmiger Ridge Ecosystem Managemen[ and Restorarion Pro~ect, an interagency forest management pro~ect. • Momtonng plots for the ~omt Forest Ecosystem Management Plan (FEMP) wrth City Open Space aze bemg established m forest stands that will be treated wrth prescnbed fire or thimm~g. An important goal of the FEMP is to momtor for changes m cover of non-nauve plant species and to mcotporate IPM and best management prachces for weeds m preventmg the spread of weeds, pre- and post-treatuig mfestat~on's, and watclung for mcreases m non- nadves following management treatments. • A population of myrtle spurge above Long Canyon has been followed for several yeazs after hand pulling a dense group of ttus succulent garden escapee. Seedhngs st~ll germmating on the site were removed. Seedmg is planned using native seed collected from the azea. Yrogram Highlights • Boulder Mountain Pazks is worldng to make restorat~on an integral part of IPM As we are leaming at Boulder Reservoir, the effort and steps involved m restoration can vary greatly depending on site charactenshcs and conditions, mclud~ng the potential for colonizarion from nahve species on-site. • At Sawhill Ponds nahve plants rescued from an azea slated for development were planted m an azea treated with weed bamer and mulch to shade out cheatgrass. The salvaged plants in this small demonstrahon plot had a high survival rate. An adjacent plot and experiment d~d not fare so welL Black plastic was put down to control cheatgrass. The plast~c shading controlled the cheatgrass, however, even after many months, etiolated stems of b~ndweed survived under the plasric. After the plastic was removed, the bmdweed tlounshed due to lac& of competrtion from any other plants. We do not know how long it would take to eradicate bmdweed usmg some type of shadmg. • Furtlter restoration pro~ects using nat~ve seeds and salvaged plants are planned. V l3 19991PM Report Boulder Mountain Parks Mounlaln ParkslParks and Recreation IPM Coordlnator:Ciay Kark-French Maehanical Controt Locatlo~ Target Species Date Method Area Treated (Hou~a) 3000-3200 Flegslaff DlRuse Knapweed Md-June Hardpull 15 00 3000-3200 FlagslaR Difluse Knapweed July Handpull 68 00 FlagslaH Roed Carida DiRUSe Knapweed July Hardpull 20 00 Bou~der Reservoir Ddfuse Knapweed Mid-June Handpull 78 `.~0 Boulder Reservoir Ddfuse Knapwaed JuneJuly Handpull 178 00 Sawhitl Ponds DiRUSe Knapweed JuneJuly Handpull 5 00 Boulder Canyon DNfuse Knapweed June-July Handpull 243 00 Boulder Canyon DiRuse Knapweed June-July Handpull 3A 00 NCAR Waler Tower Ddfuse Knapweed June-July Handpull 3 00 Upper Gregory Diffuse Knapweed July Handpull 1 00 Eldorado Canyon TraH (west end) Diffuse Knapweed June-July Handputl 2 00 Coot Lake Purple Loosesldfe Augusl Cut seed heads 174 00 Boulder ReservoirllBM Purple Looseslrife Augusl C~l seed heads 90 00 Sawhill Ponds Thistle Scolch, Canada, Musk Lete June Small hand rtrower 70 00 Sawhdl Ponds Thistle Sco~ch, Canada, Musk June Dig ~4 ~ Sawhill Ponds Thistle Scotch, Canada, Musk June Trecta mower 1z 00 Boulde~ Reservoh Thislle Scolch, Canada, Musk July HaM mower 56 UO Boulder Reservoir Thislle Scolch, Canada, Musk June Trecla mower 46 50 Cool Lake Thislle Scotch, Canada, Musk Lale June Small hard rtrower 4~ 00 BMP Core Area Thistle Scolch, Canada, Musk Lale June Small hand rnower 26 00 Crown Rxk MyAle apurge June-August Handpull 20 00 Enchanted Mesa Myrtle spurge June Handpull 1`~ Anemone-Nalh Face Myrtle spurge April Handpull 1A 00 Chautauqua Meadow Dalmatbn Toadflax May-June Handpull z4 00 ChaulauQUa Meadow Dalmalbn Toadflax June Handpull 52 00 Anemone Delmatlon ToedOax June Handpull 78 00 Red Rocks DalmaBon Toadllax June Handpull 23 00 3900 Flagslafl Dalmalion ToadFlax June Handpull , 3~ Moulh ot Gregory Canyon Dalmatbn Toadflax June Handpull 17 00 West Boundary Oalmalbn Toadflax June Hardpull 24 00 Con6nued on Page 2 Area Treated (Acrea) ~ 19998MP_~~ tl •~ ~~ / 19991PM Report Boulder Mountain Parks Boulder Mountaln Parks Mechanicel Co~lrol (Paga 2) Locatlon Target Speefea Date Melhod Boulder Reservoir Russian Olive July Cul slump Ireatmenl Sawhill Ponds Russian Olive August Cut stump Irealmenl E Mesa Fke Rd/McClintock Poison Hemlock June Machetle Coyote Canyon Polson Hemlock June Machelte Chautauqua Meadow Poison Hemlock Juna Machette Sawhill Ponds Poison Hemlock June Machelle Chaulauqua Meadow Curly Dock/Ragweed May Small hand mower Sawhdl Ponds Dame's Rockel June Hardpull Boulder Reservoir Medilerranean Sage June-August Dig Anemona Bladder Senna June Cut slump healment Enchanted Mesa Bladder Senna June Cut slump Uealment Chautauqua Meadow Parennial Sweet Pea July Handpull Rarger Collage NatWe Garden Miscellaneous Weeds March Handpull Rarger Cotlage Native Garden Miscellaneous Weeds June Handpull Ranger CoHage Nalive Garden Miscelleneous Weeds Augusl Handpull Ranger Coltage Nelive Garden Miscellaneous Weeds September Handpull Bluebell Sheller NetNe Garden Miscellaneous Weeds August Handputl Summil Cenler NatWe Garden Miacellaneous Weeds June Handpull Summd Center Nalive (iarden Mfscellaneous Weeds July Handpull Summit Cenler NaUve Garden Miscellaneous Weeds Augusl Handpull Total Area Treated (Houn) 177 00 38 00 20 00 6 00 12 00 4 00 37 00 10 00 17 00 4 00 Area Treatad (Acres) 40 00 0 50 0 25 0 25 0 25 0 25 0 25 0 50 0 50 0 50 ~g~ppp 275 t9898MP 30Uale ~ r.~ ~ V1 ..r Cultural Control Locatlon Sawhill Ponds 8lological Control Coot Lake Caolleke Targel Speclee Mosqudoes Balboxes 1999 IPM Report Bouldar Mountain Parks Melhod LocaUon Targal Specles Purple Looseslrlle Purple Looseslrife Total Chamical Control Loeatlon Boulder Reservoir Papinl-north slde lo OS Papinl-1999 bum sile E ot S Dam--W ot H20 Planl Norlh Shore W of Canal S Dam taca AerortadallMg, 1999 bum sile AeromodelMg S ot welland N Shore E of KW barrler Hase paslure+N ol LHOe Dry Cr AeranodeMing S of welland CNi9@ bcellon8 N o( Coot Lake, Spillway, Little Dry Cr Sawhlll Ponds Belween Ponda 9, 70, 11 City Yerds U61lties Storaga Area Enchanled Mesa Blological Agent Usad Galerutella calmarrensts Galerucella puslNus Hyloblus fransversovRfafus Area Treated AmounWol Of Agent Used or Method Area Trealed Released AdultsAarvae feed on Released in amall stems and leaves wges In 15-aae sile 1999 0 Adults leaves, alems, Rekased In amatl larvae roots caaes in 15-aae site 1999 40 adulls 30 acres 40 adulls QuanHty ol Producl Product Trade Name Active Ingredlent Whal Applled To Target Pesl Area T~eated (Acre~~ Used ~~ls ) Tordon 22K Picloram NaUve gressland D~ffuse knapweed 3 00 1 50 Tordon 22K Piclaam Native grassland Diffuse knapweed 3 50 1 75 7ordon 22K Pidaam Native grassland Ddfuse knapweed 9 00 4 50 Tordon 22K Pidoram Native gressland DiHusa knapweed 2 00 1 00 Twdon 22K Picbram Nalive gressla~d DlfNse knapweed 2 00 1 1~ Tordan 22K Picloram Nalive gressland Dflfuse knapweed 3 00 1 50 Transline Clopyralid Native grassland Dilfuse knapweed 2 30 1 50 Transllne Clopyralid Nalive grassland DlfNse knapweed t 50 ~ 1U Transline CIODYreIW Native grassland Dllfuse knapweed 3 20 2 20 Transline ClopyralM NaWe prassla~ Dilfuse knapweed 0 70 0 f0 Tordon 22K Picloram NaWe grasslarM Diffuse knapweed 1 50 0 50 Rodeo Glyplrosphate GrasslandlWeUand Purple loosesVife 0 25 0 25 Transline Cbpyralid Nalive gresaland DlfNSe Knapweed 0 25 0 10 Transline Cbpyralid DllfuseKnapweed 100 090 N of road, N of ash grove Trensline N a road, E of McClMlock Rodeo Sunshlne Cenyon Rodeo Total Clopyralid NaGve grassland/foresl Perennlal Sweel Pea Gtyphosphate Shrubla~d Bladder Sen~a Glyphoaphale Shrubland Bladder Senna 025 018 7 00 0 60 050 025 34 35 19 03 Total Galbns 4 76 79990~ ~00 aM ~ ~ ~ 9 Attachment G 1999 Parks and Recreation ~ Athletic Fields Recreanon mamtains 19 ballfields throughout the city We rely mamly on hand-pullmg for weed control in and azound the complexes. We have found that hand-pullmg weeds looks better and we have fewer weeds retuming. We use only a very small amount of weed control chemicais, 2,4-D and Round-up The chemicals aze used mainly on fence hnes to eliminate stnng tnmming. ~ ~} 19991PM Report Athletic Fields ~ ~_ Recreation/Athletics Fields ~ IPM Coordinator: Lance Olander -- ~----- - -- - - -- _ ~ _ ~ Mechanicel Control - - ~ I LoeaOon T.rp~t Spe~les Metnoa - An. rneted -_1 _ - - - - - 8allllelda varfouaweede Hand-pullinp Infields L__ BeMIeM axee varbus weeds HarM-putlinp Fbwer beda, paAcirq bt hWnda ___ _ _ _ Cultural Control loestlon Tarpst Spaelas Melhod Aree Traated - ___ _ _ _ _ _- None ~ ___ '-_ __ _ ~--_- ' _ Chemical Control I ! _ _ Loeatlon Praduet Tnds Nam~ Activa Inpredlant What Applied To I Qu,nOy ol vrodud uud LryN Pest ~__ Nea Treated __ __ (Oal ~ Scotl Carpanler BeIIfIeMs Amine 4 2,4•D Dlmelhylamine Tud (Bluegreas) ~ vadoua weads ' 2 acres ___ _ 0 25 Scolt Cerpenler BeII11eMe Roundup Glyphosale Isopropylamine saN turl (Bluepraes) varbua weeds 5800 sa leel (Fence hnes) __ _ __ 5 t Stazlo d Maplelon Balllields Roundup Glyphosale isopropylamlrre salt TuA (Bluegrass) variws weeda 5600 sa leet (Fence hnes) 5 1 Total 12 acres • 11,200 FI 10 <S n0 ~ ae oaareros x~s ~ ~ ../ Attachment H NIEDIAN MAINTENANCEBIKEWAY ~ 1999 IPM REPORT The Median Mamtenance and B~keway workgroup has maintenance responsibility for over 325 medians, turn islands, frontages, street closures, bikepaths and tunnels scattered over the enhre city. Different surface treatments include irrigated turf, unimproved dryland, pattem concrete, shrub and perennial planhngs and other hazd surfaces The maintenance operaRon is done in-house except for the 35 acres of irrigated turf. A mowmg and sprayuig contractor has responsibihty for all huf achvtty on Foothills Pazkway and other turf areas around town. The ummproved areas blend with the btkepath and tunnel mamtenance and aze mowed twice seasonaliy. There are over 55 designated azeas to be mowed every season. The mowing of ununproved azeas and bikeways is vegetarive management or nonchemical weed management. Weeds are the only landscape sttuahon that Median Mamtenance staff actively manage as a pest. A distuichon is made between nuisance weeds and noxious weeds. Nuisance weeds aze most often annuals and can be more easily managed by culrivat~on, hand pulhng, flammg, and successful competition wrth mulch and desuable planhngs. Noxious weeds mclude persistent perennials wtth complex root systems capable of recovery after surface treatment. Examples of these tough weeds aze Canada tlvstle, bmdweed, irnapweed, mallow, and curly dock. The method of treating these weeds aze spot spraymg with Roundup in every srtuahon except turf. Locahons where Roundup has been used as a spot treatment over the last five years have shown a distmct reduction in pest weed popularions and a concurrent reduction m amount of herbicide used. The imgated turf is treated wittt a broadleaf herbicide to manage the dandehons, among others. T'he increase m gallonage on the imgated turf is likely at~butable to the change of the contractor. There have been no conclusions drawn of the efficacy of the increased sprayin~ V ~-1 19991PM Report Median Maintenance and Bikeways Dlvislon/DepaAmenl N ame: Street 6 Bikeway MaintenancelPublic Wor ks _ ___ __ ___ ___ __+_ IPM Coordinator: Sher don Denny __ ___ ___ __ ___ __ - ----- - -`--- - -- - ---- Mechanical Control _ -- r _~ _ Localion Target Specles Melhod _ Area Treated (Acros) ~ Hours i M weeds V l Weeding ~ el edians Medians ar ous Verbusweeds _____ Mowing _ _ _ 947I 1•145 _ Foolhills Pkwy d Othe~ Tud Varlous weeds - 'Mowing_ _ __ _ ___ __ 53 0~_ __ __ BNceweys --- -- Varlousweeds-- _--_ MowinglWeeding -- - _ - - - -~ - 698 - _--- - - - ToWI - - - - 209 24' U05 --- - - - -- -- --- - ------- - _ - -t-- ---- ---- , CUItUfel COntfbl ~ _ -- --- -- -- - ---- - -- - - --- Locetlon - - - - Target Specles - - Metbod Area 7reatad ~ - --- - ---- - - ~ __ ----" - -- ---- - - _ - - mulching, cul~rvatin9. Plant i seleclion 8 compelitlon, ~ Syslem-wide (See narrelWe) Varbus weeds _ Irrlpatlon conlyd _ ~ Throughoul system ___ _ _ _ - - - - - - -- --- -- -- -- ~---- ~ - - - ----- - ---- Blological Control - --- ---'---- ------- - -- _ __ ___ _ _ ~ __ __ _ - - AmounWol OlAgent loca0on 7arpet Speclas Blolopical Apant Ueed -- --- Method _ I Area Traatad__ Usad or Released --- - --- -- - - - N«~a -- - -- -- -L ---~- - - -- ~-- - - ~ Chemlcal Control _~ _ _ _ - -- - - ----- - ; Quantity of Produet Used LocaUOn Product Trade Name Active Inpredlent Whal AppOad To _ ~_ Tarqat Past 1 Area Trealad (Acrae) ((iale 1 Medians Roundup Glyphosate Landscape d Hard Surtace IThislle, bindweed Spol ireaMent 5 6 Foothtlla Pkwy d OtAer Turf ___ lesco Three-way Dimeihylamine Tud ~Thisfle, bMdweed I _ _ 33 07 _ 16 B8 Bikeways Roundup Glyphosate Turf ~TM1istle,bindweed' 002 200 Tolal _ 33 09 24 4 ~ ~ 99Wb1icworka XLS ~ ~ ~ Attachment I Airport ~ 1999 IPM Summary The Airport does regular mowing for weed control. We have an operator who mows weeds wrth a Case tractor and 7 foot deck mower We generally mow the matn body of the azrport every 3-4 weeks, depending upon weed growth. The more visible azeas at the entrance to the airport aze mowed more frequently The herbicide applicahon each year ts to control emergent vegetahon and to keep rt from destroying the asphalt aircraft operaring surfaces. See attached report for details ~ ~l 19991PM RepoK Alrport Dlvlsion/Department Nama AlrporUPubli c Works ; __ _ ___ _ _ _ IPMCoordlnalor: Ray Grundy _ _ _ ___ - __ _ ___ _____ _ __ -- ` -_ - Mechanical Conlrol -- - - --'- _. . _ ._ _ _ ~'---- ' Locatlon TarpN Sp~~ps MelAod __ __ _ Ana Traabd (ACrn __ ___ _ )__.-_~ , _ _ _'_ _ _ __-__ None __ _ _ -- _ _'_- _ ' __' __ _- _ _' - _ -_ ~ - _-_-_-- __ ---' _- '- _-- _- _- _ _ ' '__'-' _ _ CUIIUraI COnlrol --- __ ___ - ~ - --~- __ __ _ ' "_" -' - Loallon Tarp~t5p~clo -- -M~thod- -___ _- AnaTnat~d _ _-- __'_ ____ _ _ _ ' - None - - _-_-__ _ __-__ I _-___-, - __---L_-_ - _ __ _-_ __ - ____ -_ _ " --_ - _--_____'__--- -___ - -1___ _ -__ _'_ ' BlologlcalControl ' '_ _ - - -_- - __ - -- -- - -- -- ~ AmounWol ot ApeM Used or LoceOOn TerpN Spacles - Bio~oplul Apent Uaed - _ Malhod } Mu Tralad ' RahasM __ ~ No~ro _-_' _ -_ -- ___ _-- -1 - _ ~~ '_ - _ _' _ _ ~ -- -_ ___-' ' ___ ____ __- -__-__- -' _ = ~ ---- ----- ---- - - ---' - ---------- - - - ChemicalControl --- -- - - - -- --- - - - --- - - -- - -- _ ~ ~ - _" - _ -' --- ~ -~ - - Uusntity al Produd OuanlNy o/ PraduH Loe~llon -- Vroduct Tnd~ Nam~ --~ --'- --' Actlv~ Inpndiml -- -- What AOP~~!d To _ __ Tary~t Pest I Ana TnN~d ~AOns) _ UsM (Gab ) Used (lM ~ ----- Ruoway a~M taxhvays hom edge o/ gaDhall ta 4 i M 6 X oulside af aspheH. Epulpmanl VardsMasoHne aMrege ereae, eramd Ilghl~ aiM 1 markers near nimvay S IaxMaya, arou~M ~ ANalbn Relaled Fecl0lka Sehara Imezlhapyr 6 Dluron Navigatbn EQUlpment near rum+ay ~egalatbn I __ _._ . _ ~p ~ AWatbn Releled FeclLlies RourMup Pro Glyphosale ceme ea above ~~e~~?~! __ 12 J 110 99publN,wrnka %LS ~ ~~ ~ ~ ~ Attachment J 1999 IPM Water Utilities Report ` ' Scope: The water utilities Integrated Pest Management proeram encompasses four sites; The Betasso Water Treatment Plant (WTP), Boulder Reservou WTP plus Orodell and 101 Pearl hydroelectnc factlihes. Total azea is 2.75 acres. Weed hand pulling at Betasso and the hydro factlihes was coordinated in house Transhne spot spray applicahons at these faciliries were contracted through Tabor Management Sernces. Weeds in the newly xenscaped azeas at the Boulder Reservoir Water Treahnent Plant were hand pulled and mowed by the landscape contractor. Main Pest or Weed Problems: According to Tabor the weed problems at Betasso and the hydro facihhes aze Cendi, scattered. In house hand pulhng was for Imapweed. The biggest problem we have at these facihtres is infestahon from untreated adjacent areas. At the Boulder Reservoir WTP a variety of weeds are hand pulled and mowed wrthm the xeriscaped azeas. The rest of the azea mside the plant grounds fence was left untouched m 1999. Plans for 2000: Water utilities aze committed to usmg chemicals only when absolutely necessary In 2000 hand pulling at Betasso and the hydro facilihes will continue along with precision chemical applicat~on. Weeds in the newly xeriscaped azeas at the Boulder reservoir WTP will once again be kept in check by hand pullmg and mowmg. i~! 23 19991PM Report Water UtiNties ~ - ~- --- - - Dlvision/Department - Name: Utllitias 19991P - M report - _ _j ___ _ _ IPM Coordinator Nam e: Jlm Shelley _ _ __ ~ _ -- -i-- - - - - -- - ---- - - Mechanical Control --- -- - - -~-- - Lxatlon Targsl Specles - Mathod Area Trealed (Aeree) ____ _ _ _ ~_ _ _ _ _ _ Belasso WTP __ Vadous weeds Hand pulling _ _ 1 __ __ _ Boulder Res WTP Vadoua weeds Hand pulling end mowim~ __ ___ 1 ___ ___ ____ OrodeA and 101 Pearl Varbua weeds Hand pulling 0 75 ____ _ _ __ _ -- Tolal 2 75 - _ ~ _ -___ ___' _ - ____ __ CUItUrelCOntrol-_ --___-- -___ _-_________- _ -_ _ - _ _____ __ ____._ _-_ __ __-___ _ _ _ - ______ ___'__ _ _ ~ Lxallon -_ _ Tarpet 8peclee _ - _ - _ Method _ _ _ -_ _Area Treated ____ _ ~_ _ _ _ _ _ _ None ~ - -_-_ _ _ __-_- --_---__-__ __ -___ - - - _- ----- --- -- - ~-- -- - Biological Control -- - ------ -- --- -- - ---- I a~oo~inoi.oan9~~i Loutlon Targel Species Blological Agent Used Method - Area Tnatsd I Used or Releaeed - - -- one -- - - ---- -- - --- -- - - ---- ------ -----1-- - - ~ Chemical Control - ~ -- -- -- - Guantity o1 OuanUy ol ~ Produd Used Product Used Locatlon Producl Troda Name ActWe Ingredienl ~ Whal Applled To Tarpal Pesl _~ Area Treated (Acres) (Ozs ~ (Gsl ~ - --- - - - ---- -- _ _ Near bullding ~ front I 1 1 20 Belasso WTP TransUne _ ClopyralM landscape area Gendl, scatlered Orodell and f07 Pead Translme Clopyralid AromM faGldZ grounds Candl, s-cattared }- _ 0 75 __ _ 15_ BouMerReoWTP None I 0 0 Tolal - --- 1 1 75 35 0 27 ~ ~ 99 h20 REPT XLS ~ ~~ ~ 1999 IPM Report Wastewater Treatment Plant ~ ~ ~ ~ Q Wastewater Treatment ------- Plant --~-- - I IPM Coordinators: Lel gh Rickert / Dave Gamm ell ; - Mechanical Control Loeadon 75ih8t Planl --- Targel Speclee varlousweeds - ----- Method Mowing -- ~ ~ Area Treated (Acree) -------- - f0 I _ ( I 1 -~ - ; - Tolal -- - --- 10 --- -- -- - - -- I - ---- ------ --- - - { L Cultural Conlrol ~ Locatlon Targel Specles Method Area Treate~ ' _ -__- _ ~ - _ _ None _____ . _ _ ._ _ Biological Control _ _ __ - _--- ___ ______ _ _ ___ _ _ _ _ _--___ -____ - ~ --- + t _-__~____ --- -- , Locatlon - - - --- -- Target Speelea - '- - Blolopical Agent Uaed --- - Method --- ~ AmounWol OfAgent Area Trealed Used or Released -- - ---~--- -- --- - - None --- ----- - ~ Chemical Control ' Locallon Produel Trade Name Active Ingredienl What AppUed To Tarpet Pesl Quanlily o1 Produet Uaed A~ea Trealad (Acres (13a1- 751b SI Plenl Clean-Up Diqual DibromMe Around bulldings, Uees, elc weeds, grasses 10,000 Anear teet 2 5 751h SI Wanl Pendulum 9 3 EC Pendimethehn rock areas weeds 1 1 7 75ih Sl Plant Tripower MCPA turf areas dandelions 8 6 a Total 9 acres * f 0,000 Imear 11 10 6 ~~ N 99WW~Prp xls Attachment L CITY OF BOULDER OPEN SPACE DEPARTMENT ("'~ 1999 IPM SiTMMARY In 1996, the Open Space Deparnnent divided the Open Space system into seven different "regions" and is m the process of developing Area Management Plans for these azeas. The North Boulder Valley and South Boulder Creek Area Management Plans have been completed to date. The purpose of these plans aze to provide specific management direction for natural, cultural, agricultural, and passive recreahonal resources, to resolve potential conflicts between management goals, and to ensure effecrive public participation Ultimately, a more effechve IPM proeram wtll evolve because of these plans. An increase m a particulaz control (t.e. chemical) may occur m a given yeaz as these plans be~n to be implemented The Open Space Department develops an annual operaring plan each yeaz specifjnng how and where the ob~ectives of the overall IPM plan will be executed and produces a year-end summary hsting the vanous con~ols applied on specific properties. Mulhple control tectuuques occur on many properties. Recorded acreage mvolving sponge apphcators or handwork aze esrimates. * Mechanical control: 921.75 acres * ~ Tools used: tractor mowers, powered and manual weed wkups, hand pulling, shovels. - Ttus is a reduction of acres compazed to last year and represents a number of circumstances Recording of Russian olive control activihes has changed. In an azea where wrenclung and control mvolving herbicide (stumpmg or injechng) occur together, acreage is now recorded in the ~ chemical section only. Additronally, only four IPM seasonal employees were lured due to the lack of interested applicants. - Target species impacted: Canada thistle, musk ttustle, scotch ttustle, diffuse knapweed, Mediterranean sage, leafy spurge, myrtle spurge, Tamansk, purple loosestnfe, hoary cress, perennial pepperweed, Dalmatian toadflax, teasel, annual weed spectes - In addihon, prescnbed fires were used to suppress weed species on 132 acres and 15.75 miles of agrtcultural ditches. ' Cultural control: 636.8 acres * - A lazge part of cultural control involves early first cutting of alfalfa for alfalfa weevil reduction and weed control. - Dryland fallow fields were t~lled as an altemahve to chemical control. - Lands within the Conservat~on Reserve Program (CRP) were seeded with a cover crop as a weed control measure before reseeding with native spec~es occurs. " Biologicai control: 1019 acres (Estimated) * - Prescnpttve grazmg wuh cattle on Canada thistle or d~ffuse knapwced m early spnng has been shown to impact these target species while encouraging the des~rable plants in ceRam habrtats Research is bemg conducted through 1999 that will examine the effects grazing has on d~ffuse knapwced 2.~0 * Chemical control: 2279.45 acres * ~ The attached spreadsheet separates the total acres of chemicals applied mto three categones. ~ 1) cropland (including CRP) spraying, 2) broadcasUspot spraying of non-cropland (native/semi native) and 3) hand applied (wick, injecnon, stump applied) applications By separatmg the different types of applicahons, more precise correlations can be made to the fluctuahons in each. The amount of cropland sprayed can change drast~cally from year to year and is very dependent on the seventy of the previous wmter and crop rotation schedules. Non cropland spraying is deternuned by number of contractors avazlable and weather pattems. ~ The North Boulder Valley Management Plan determined noxious weeds, part~culazly dtffuse knapweed to be a senous problem m tlus azea and their suppression impoRant. Therefore, an intensive controi effort that inc(udes chemical use has begun and will contmue for some hme. This yeaz the southem part of the system was mapped extenstvely for weeds. Diffuse knapweed is the most prevalent weed m the south and will require chemical control over the next few years As a result, the numbers of acres sprayed will vary ~ The above number includes an estimate of 177.4 acres mvolvuig hand treatments conducted by 4 seasonal crewtnembers T'he responsibilrties of the crew mvolve usm~ hand held herbicide apphcators that contact mdividual weeds throughout a large azea. Areas where uee stump treatments and tree m~echons occurred were also inciude m this estimate ~ Roughly 835 acres of chemtcal control mvolved rangeland and pasture ~ound. Areas sprayed were posted 24 hours m advance - Open Space is m the process of reclazmmg many of its less producrive dryland farm eround back to native grass prazne. Returmng these lands back to narive praine has many benefits includmg soil erosion reduction, decrease in chemical dependency, and provtdm~ wildlife habitat. ~ Restorarion is a slow process involvmg many years of close monttoring and management. Imtial use of chemical and mechanical controls for weedy species ts unavoidable and may alter the yeazly spreadsheet totals m these categones. * Mapping and Inventory * ~ Approx~mately 4,00,0 acres of range(and and npanan floodplam were mapped and inventoned through the season. " Prevention and Education * ~ A Weed Awareness table was developed this year and set up at two tra~lheads. More work will be done on this m 2000. ~ An educational display showmg arnamental species that currcady threaten native plant commumt~es m Bouldcr County was set up at [he Boulder Counry Farmers market dunn~ ~Veed Awareness Week. Purplc looscstnfe was emphasized. ~ Open Space contributed to the 2000 Colorado Noxious Weed Calendar 0..! ~~ IPM Report -1999 Open Space Department ~uantlty Producl DuanOy Product LLoeatlon Product Trade Name What Applled To Target Pest (ACree~ ~piau~ ~aais ~ ~~os ~ ~ Cropland Buctril Com Weeds 55 00 Cropland Banvel Corn Grass Hay Weeds 77 00 OatsWlnler Wheal. Spring Barley. Grass Cropland Bronale Hay Weeds 263 90 Cropland Baythrdd Alfalfa Altalfa Weevil 560 Cropland Dimelhoale AI(alfa Alfalfa Weevd 3000 CRP Restoratlon Peak Milo-CRP Weeds 1 64 Cropland, CRP Resloralion Roundup CRP, Crop Pre-plant Weeds 3 75 Cropland Pursuil Allalfa, Weeds 793 50 Cropland Warrior Allatfa Alfalta Weev(I 42 ~Z CRP Reslore0on Curtail Mdo-CRP Weeds 318 00 Sub Tolal 1328 00 7584 51 198 06 0 Med Sage, Teasel, Hoary C, NaUvel Seml Nalive Veg EscoA Per Pepperweed, C Thislle 0 ~Z Russlan Olive Tamarisk, Canada Thislle, Bouncing Bel, NaUve/ Semi Nalive Veg Roundup Dames Rockel 17 00 P Looseslrife, C Thislle, Bouncing Bet, Tansy, Nalive/ Seml Nalive Veg Rodeo Knapweed, R Olive 6 00 Nalivd Seml Nallve Veg Garbn Russian Olive, Elm 15 40 Nativel Seml Nalive Veg Tela~ Teasel, Canada Thislle ~~ Na1Wel Seml NaUve Veg Transline KnavWeed, Canada 7histle 94 92 Med Sage.Knapweed,Ganada NaOve/ Seml Nalive Veg Tordon 22K Thislle 836 97 Bare Ground Kermax Parking Lot 0 25 9905405 xls~ ~ ~. ~ ~~ ~ HOUlWO Al1iM0171TY OF THE Clil' OF BOULDER IPM REPORT 1Y8! AND !9!Y PESTICIOE U9E COMPAR190N O ~ ~ ~ ~ ~ ~ N IJ A Q~ G NC F U ~ Y V ~ A A tJ N O O~ 4 SQ 1 ~ v ~ u~i ~ • ~ .. ~ ~ x v ~D rl O r