3900 BROADWAY BASE FILE 2016-01-01 MF Import

CITY OF EVERETT STORMWATER MANAGEMENT MANUAL � Shp Three: Mooitor lo detect rnd preveot pest problems. I Regular monitoring is a key practicc to anticipatc and prevent major pest outbreaks. It begins with a visual ; evaluation of the lawn or landscepe's condition. Take a few minutes before mowing to walk around and ', look far problems. Keep a notebook,record when and where a problem occurs,then monitor for it at about the same time in future years. Specific monitoring techniques can be used in the appmpriate season for some potential problem pests,such as Ewn�can crane Fly. Step Four: Modify t6e mrinteoance progrom to promote healthy plrnv and discourage pab. i A healthy landscape is resistanl to most pest problems. Lawn aeration and overseeing along with proper mowing height, Certilization,and irrigation will help the grass out-compete weeds. Correcting drainage problems and lening soil dry out between waterings in the summer may rcduce the number of crane-Fly larvae that survive. Step Five: If pesb exceed the tolerooce thresAolds ... Use cultural,physical, mechanical,or biological controls first. If those prove insufficient,use the chemical controls described beluw that have the least non-terget impact. When a pest outbreek strikes(or monitoring shows one is imminent), implement integrated pest management then consider control options that are the least toxic,or have the least nomtarget impact. Here are two enamples of an integrated pest management approach: I. Red thread diserse is most likely under low nitrogen fertility conditions and most severe during slow growth conditions. Mow and beg the c!ippings to remove diseased blades. Fertilite IighAy to help the gass recover,then begin gtacs cycling and change to fall fertili7ation with a slow-releese or natural-organic fertilizer to provide an even supply of nutrients. Chemical fungicides are not recommended tecause rcd thread cannot kill the lawn. 2. Cnne 11y d�m�qe is most prevalent on lewns that sta� wet in the winter end are itri�rpted in the summec Correct the winter drainage and/or allow Lhe soil ro dry between irrigation cycles; larvae are susceptible to drying out,so these changes can reduce their numbers. It may also be possible to reduce crane fly larvae numbers by using�power de-thazcher on a cool,cloudy day when feeding is occurring close to the surt'ace. Studies are being conducted using beneficial nematodes that para5itize the crane fly larvae;this type of trentment may eventuelly be a reasonable altemative. Only after trying suitable non-chemical control methods,or detertnining that the pest outbmak is causing too much scrious damage, should chemical controls be considered. Research what products are available and chor,,se a p�oduct that is the least toxic and has the Icast non•targel impact. Refcr to the operationel tiMPs ior:h=use oC pesticides below for g:�idelines on choosing,storing,and using lawn and garden chei�:i,:als. Slep Sii: �vAluate aod record t6e e(fecHveoe�s of Me rnotrol,�od modity m�intenance practices to aupport I��vn��r I�cdsupe recovery and preveot recurrence. Ker.p records! T�ote when, wherc,and what symptoms occurred,or wheo monitor,ng revealed a potential pest problem. Note what controls were applied and when,and the effectiveness o(the control. Monitor next year for the same problems. Review your landscape maintenance and cultural practices to see if they cen be modified to prevent or reduce the problem. A comprchensive integrated pest management pro�am should also include the proper use of pesticides as a last resort,and vegetation/fertilizer menegement to eliminate or minimize the contemination of stortnwater. Appendices D-2