Billbug larvae yog dawb, legless, 5/8-nti ntev, humpbacked grubs nrog lub taub hau daj rau xim av, uas nyuaj rau kev ntxhib los mos dua lub cev dawb. Kev puas tsuaj theem: Cov neeg laus noj cov nyom nyom los yog stems, tab sis qhov kev puas tsuaj loj yog tshwm sim los ntawm cov larvae pub rau hauv qia, ntawm lub kaus mom los yog ntawm cov hauv paus hniav.
Pob Billbug larvae have leg?
Billbug larvae yog dawb nrog liab-xim av taub hau thiab saib zoo ib yam li dawb grubs, lwm yam kab tsuag kab. Txawm li cas los xij, billbug larvae tsis muaj ceg; white grubs ua.
bluegrass Billbug zoo li cas?
Bluegrass Billbug. Zoo li tag nrho cov kab kab kab, cov neeg laus bluegrass tuaj yeem pom tau yooj yim los ntawm qhov muaj qhov ntev ntawm lub taub hau. Lawv yog 7 - 8 hli ntev thiab grey rau xim dub, tab sis lawv qee zaum coated nrog av ua rau lawv tshwm xim av lossis beige.
Puas yog Billbugs tib yam li grubs?
Billbug larvae (grubs) zoo ib yam li cov kab dawb tab sis tsis muaj ceg Lawv muaj lub cev xim xim av nrog lub taub hau xim av, thiab thaum tsim tag nrho yog li 1/4 txog 1/ 2 nti ntev, nyob ntawm hom. Lawv lub cev yog nkhaus me ntsis thiab zoo ib yam li cov nplej puffed.
Yuav ua li cas yog cov tshuaj tua kab zoo tshaj plaws rau grub?
Yuav tua cov nyom thaum lub caij nplooj ntoo hlav lossis lub caij nplooj zeeg, siv carbaryl lossis trichlorfon Ib txwm hnav hnab looj tes roj hmab thiab khau looj plab hlaub thaum siv tshuaj tua kab rau turfgrass. Nco ntsoov ywg cov nyom nrog dej tsawg kawg 0.5 ntiv testhiab cia cov nyom kom qhuav ua ntej tso cai rau leej twg los yog tsiaj nyob rau hauv qhov chaw kho mob.
