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  • To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for
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Biology: Roots To understand the biology of root crowns, I harvested several from a kudzu patch in Dover, DE and grew them in pots.

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Page 1: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Biology: Roots Tounderstandthebiologyofroot crowns,Iharvestedseveral fromakudzupatchinDover,DEandgrewtheminpots.

Page 2: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Biology: Roots Asinthe^ield,newvinesgrewfromtherootcrownsandstemnodes.Thishasimportantimplicationsformonitoringand controlstrategies targetingkudzu.

Page 3: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Control Because newgrowth appears onrootcrowns and

stemnodes,kudzueradicationeffortsshouldidentifythesestructuresinthespringbeforevinesbecomeatangledmess(andtheywill).

Page 4: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Control:StemNodes& RootCrowns

Toeffectivelykillandremovekudzuplants,youmustremovetheentirecrown.Unfortunately,pullingvinesdoesnotusuallywork.Eventhoughthisnodeisdamaged,meristematic tissueis stillpresenttogeneratenewvines.

Page 5: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Control:StemNodes& RootCrowns

Instead,useloppers,hand clippers or ahand sawtocut below thecrown.Removethecrown,killtheplant.

Imagecourtesyof“KnockOutKudzu”(KOkudzu.com)TheCoalitiontoControlKudzuWithoutChemicals

https://KOkudzu.com)
Page 6: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Youmightask,doesthis work,or is there nostoppingkudzu?

Page 7: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Itworks!Letmeshowyou.

Aspartofmyresearch,Igrew105kudzuplantsfromhandscari^iedseedinthegreenhouse.

Page 8: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Inearlysummer,pottedplantsweretransplantedtoanagricultural^ieldattheUniversityofDelawareFarm.Eventhoughhebattled“thevine”everysummersince1974onhisownproperty,mydadwaswillingtohelpplantkudzuatUD.

Page 9: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Ifyouthinkkillinginvasivespeciesisdif^icult,trygrowingthem!Wenotonlydripirrigatedtheplants,butalsoinoculatedthemwithRhizobiumtohelpthemgetstarted.

Page 10: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Inthisagriculturalsetting,plantswererelativelyfreefromnaturalherbivory and lightcompetition.Plantsweresubjecttooneoffourdifferenttreatments:leafcutting(either50or75%removal)andshootclipping(removalof50or75%ofallshoottips).Treatmentsweredesignedtomimicdamagebypotentialbiologicalcontrol

agentsfromChina.Oncetheplantsgotgoing,theyreallytookoffgrowing.

Page 11: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Can it becontrolled?

Farmpictures

AndImeantookoff!Notethenewplantsintheforegroundcomparedtosecondyearplants.Ourdesignincluded35one-yearplantsthatwereplanted and harvested after onegrowingseason,and35two-yearplantsthatgrewfortwoseasons.

Page 12: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Youcanimaginewithkudzu’sreputationthatthefarmstaffwasnotthrilledtolet35plantsoverwinterinoneoftheir^ields…

Page 13: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Forscale,youcanseethatoneplantis(much)largerthanonekudzuresearcher.

Page 14: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Attheendofeachseason,abovegroundbiomasswasharvestedbyclippingvinesfromtherootcrown.Eachbagbelow representsoneplant.

Page 15: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Aftertakingmeasurementsandrecordingdata,plantmaterialwasdriedinagreenhouseandweighed.

Page 16: To understand the biology of root crowns, I harvested ......Biology: Roots As in the ^ield, new vines grew from the root crowns and stem nodes. This has important implications for

Dryingplantsinthegreenhousewassuf^icienttokillthem.Plantmaterialwasdiscardedonacompostpileandnonewkudzuplantsregeneratedfromthisdiscardedmaterial.

Ma#Frye


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