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1、ENY-014NematodeManagementInCommercialVegetableProduction1J.W.Noling2NematodePestsofVegetableCropsnematodes,manyofthesespecieshavealsobeeninFloridashowntopredisposeplantstoinfectionbyfungalorbacterialpathogensortotransmitvirusdiseases,Plantparasiticnematodes(Figure1),aresmallwhichcontributestoaddit
2、ionalyieldreductions.microscopicroundwormswhichliveinthesoilandattacktherootsofplants.CropproductionproblemsTable1listsnematodeswhichmayaffectinducedbynematodesthereforegenerallyoccurasavegetablecropsinFlorida;manymaycauseresultofrootdysfunction,reducingrootingvolumesignificantyieldreductions.andf
3、oragingandutilizationefficiencyofwaterandBiology&LifeHistorynutrients.ManydifferentgeneraandspeciesofnematodescanbeimportanttocropproductioninMostspeciesofplantparasiticnematodeshaveaFlorida.Inmanycasesamixedcommunityofplantrelativelysimplelifecycleconsistingoftheegg,fourparasiticnematodesispresen
4、tinafield,ratherthanlarvalstagesandtheadultmaleandfemale(Figurehavingasinglespeciesoccurringalone(Table1).In2).Developmentofthefirststagelarvaeoccursgeneral,themostwidespreadandeconomicallywithintheeggwherethefirstmoltoccurs.Secondimportantnematodespeciesincludetheroot-knotstagelarvaehatchfromeggs
5、tofindandinfectplantnematode,Meloidogynespp.,andstingnematode,rootsorinsomecasesfoliartissues.HostfindingorBelonolaimuslongicaudatus.Thehostrangeofthesemovementinsoiloccurswithinsurfacefilmsofwaternematodes,aswithothers,includemostifnotallofsurroundingsoilparticlesandrootsurfaces.thecommerciallygr
6、ownvegetableswithinthestate.Dependingonspecies,feedingwilloccuralongtheYieldreductionscanbeextensivebutvaryrootsurfaceorinotherspecieslikeroot-knot,youngsignificantlybetweenplantandnematodespecies.Inlarvalstageswillinvaderoottissue,establishingadditiontothedirectcropdamagecausedbypermanentfeedings
7、iteswithintheroot.Secondstage1.ThisdocumentisENY-014(NG004),oneofaseriesoftheEntomology&NematologyDepartment,FloridaCooperativeExtensionService,InstituteofFoodandAgriculturalSciences,UniversityofFlorida.Published
