Cabbage sib ntaus: txhua yam koj yuav tsum paub

Tshaj thoob plaws hauv North America, lub cabbage looper (Trichoplusia tsis yog) yog ib qho kab mob uas tshwm sim thiab puas tsuaj, feem ntau pom nyob rau hauv cov qoob loo ntawm brassica lossis brassica tsev neeg.

Qhov loj ntawm nws cov larvae loj hlob, qhov ntau lawv ua rau puas tsuaj. Thaum lub sij hawm larval theem, cabbage loopers noj peb zaug lawv tus kheej qhov hnyav nyob rau hauv cov khoom cog ib hnub twg, ua rau muaj kev puas tsuaj ntau tshaj nyob rau hauv ob peb hnub dhau los ntawm lawv txoj kev loj hlob.

Yog tias koj xav tias cabbage loopers infesting koj cov qoob loo, phau ntawv qhia no yuav qhia koj paub yuav ua li cas txheeb xyuas lawv, cov qoob loo thiab cov nroj tsuag lawv cuam tshuam li cas (hint: nws tsis yog brassicas nkaus xwb!), thiab yuav ua li cas tswj tau zoo thiab tshem tawm cov kab laug sab ib zaug thiab rau tag nrho. Tag nrho.

cabbage yog dab tsi?

Cabbage loopers (Trichoplusia ni) yog cov kab mob loj heev uas feem ntau cuam tshuam rau cov nroj tsuag cruciferous xws li zaub qhwv, zaub qhwv, zaub qhwv thiab Brussels sprouts. Tab sis hmoov tsis, qhov ntawd tsis yog txhua yam lawv tawm tsam thiab lawv qhov kev puas tsuaj tuaj yeem yog qhov dav heev.

Lawv muaj nyob thoob plaws yuav luag tag nrho lub caij loj hlob thiab muaj npe rau txoj kev uas lawv txav mus rau theem kab ntsig; cov kab arches nws lub cev, ua voj voog txav.

Txawm li cas los xij, lawv yuav tsum tsis txhob tsis meej pem nrog cov cab cab, vim tias cov cab cab yog cov kab txaij ntsuab velvety nrog cov kab txaij daj daj, thaum cov kab laug sab laug yog cov kab ntsig daj-ntsuab uas txav mus rau hauv lub voj voog vim tsis muaj ob txhais ceg.

Yuav ua li cas paub txog cabbage loopers?

Loopbacks, feem ntau hu ua inchworms, feem ntau pom tau yooj yim los ntawm lawv txoj kev txav tshwj xeeb, uas lawv khoov hauv ib nrab lossis tsim "voj" thaum txav qeeb.

Cov yam ntxwv no yog vim tsis muaj ob txhais ceg ntawm lub voj voog ntu, vim nws muaj peb khub ob txhais ceg nyob ze ntawm lub taub hau thiab peb khub ntawm prolegs ntawm lub plab. Ib tug rau-legged looper tuaj yeem siv yim uas lwm cov nplooj ntawv muaj.

Cov kab laug sab larva yog loj (1-1/2 nti ntev), daj ntseg kab laug sab nrog ib tug nqaim dawb kab txaij ntawm ob sab thiab ob peb kab nqaim nyob rau sab nraum qab.

Cov neeg laus yog hmo ntuj ya grey npauj (tisspan 1-1/2 ntiv tes) nrog lub ntsej muag nyiaj V-zoo li qhov chaw nyob nruab nrab ntawm txhua qhov tsaus ntuj. Lawv lub npe tshawb fawb thiab cov kab lus "Ni npauj" los ntawm cov qauv ntawm lub tis ntawm tus neeg laus npauj npaim uas zoo li tus tsiaj ntawv Greek "ni".

Nco ntsoov: Qhov sib txawv ntawm cabbage loopers thiab larvae ntawm vaj kab laug sab webworms, lub pob zeb diamondback npauj thiab cov larvae ntawm lwm yam inchworms yog tsis txiav txim rau lawv tswj. Lawv txhua tus siv tib yam kev tswj xyuas kab tsuag.

Lub neej voj voog ntawm cabbage

Lub pupae overwinter txuas rau cov nroj tsuag los yog nyob ze lub vaj khib nyiab. Cov npauj npaim tshwm sim rau lub caij nplooj ntoo hlav thiab tawg dav dav, suav nrog sab qaum teb mus rau thaj chaw txias heev kom ciaj sia nyob rau lub caij ntuj no.

Tus neeg laus cabbage npauj lays daj ntseg ntsuab, dome-shaped cabbage looper qe ntawm cov nroj tsuag ntawm ob sab saum toj thiab undersides ntawm nplooj. Cov qe loj hlob tom qab 3 lossis 4 hnub.

Qhov kev puas tsuaj larval theem ncav cuag kev loj hlob hauv 2-4 lub lis piam. Tom qab ntawd lawv tsim ib tug pupa los yog cocoon thiab pupate nyob rau hauv nyias silken cocoons txuas rau stems los yog undersides ntawm nplooj, nrog rau cov neeg laus tshwm nyob rau hauv 10 hnub.

Loops nyob rau sab qaum teb raws li Canada yuav tsim tau ob mus rau peb tiam ib xyoos, nrog rau cov cheeb tsam sov tuaj yeem tsim tau ntau tiam neeg hauv ib xyoos.

Host nroj tsuag rau cabbage loopers

Cov kab no tuaj yeem pub rau ntau yam zaub, qoob loo, thiab txawm tias cov nroj tsuag paj. Raws li lawv lub npe qhia, lawv feem ntau noj cov zaub cruciferous, tab sis hmoov tsis uas tsis yog txhua yam lawv tua.

Cia peb saib cov tswv tsev ntawm cov kab no:

Cruciferous: Zaub qhwv, zaub qhwv, zaub qhwv, radishes, rutabaga, turnips, cabbage, watercress, mustard zaub thiab collard zaub.

Lwm cov qoob loo zaub: Celery, dib, taum lima, lettuce, qos yaj ywm, spinach, qos yaj ywm qab zib, txiv lws suav, dib, parsnips, cantaloupe, peas thiab beets.

Teb qoob loo: Paj rwb, soybeans thiab luam yeeb.

Paj qoob loo: Alfalfa, mallow, snapdragon, qab zib pea thiab chrysanthemum.

Kev puas tsuaj tshwm sim los ntawm cabbage tongs

Cabbage loopers muaj nyob rau sab qab teb ntawm Mexico thiab tau tsim nyob rau hauv kev lag luam teb nrog cov qoob loo tsis zoo nyob rau ntawd thiab hauv Tebchaws Meskas.

Lawv feem ntau tua cov qoob loo brassica, suav nrog broccoli, cauliflower thiab zaub qhwv. Cov tub ntxhais hluas larvae noj tsuas yog nyob rau sab qis ntawm nplooj.

Laus larvae zom loj, irregular qhov nyob rau hauv nplooj ntawm ntau yam nroj tsuag. Cov loopers txiav rau hauv nruab nrab ntawm lub taub hau, tawm hauv qab pawg ntawm cov dej ntub, nplua quav. Thaum tsim tau, loopers yog qhov nyuaj kom tshem tawm.

Ntxiv nrog rau cov zaub cruciferous, cabbage loops cuam tshuam rau lettuce, spinach, celery, cucumbers thiab txiv lws suav. Txhua xyoo, cov tshuaj tua kab ntau dhau mus rau hauv kev lag luam, ua rau dej loj thiab av degradation.

Yuav ua li cas kom tswj tau zoo thiab tshem tawm ntawm lub voj voog

Nyob rau hauv ib co taw tes, cabbage looper puas yuav puas tsuaj. Ntau tus gardeners zam ib qhov tunnels hauv cabbage los yog irregularly zoo li nti nti ntawm Brussels sprouts.

Nyob rau hauv ib lub vaj organic, hom kev puas tsuaj no yuav raug zam. Tab sis nws yog ib qho tseem ceeb uas yuav tsum tau ua nyob rau theem no, ua ntej lub qe hatch thiab thib ob tiam npaj ua noj nqaij los ntawm dab tsi yog tshuav. Thiab ib ooj ntawm kev tiv thaiv? Zoo, koj paub dab tsi nws muaj nqis.

1. Saib xyuas koj cov nroj tsuag cabbage kom ze thiab nquag, ob qho tib si sab nraud thiab hauv qab nplooj. Tshem tawm cov tshaib plab, qeeb-crawling larvae thiab co tawm lub qe ua ntej lawv pib tshwm sim. Txhawm rau kom yooj yim pov tseg, cov larvae tuaj yeem poob rau hauv ib lub hub ntawm xab npum dej.
2. Cabbage looper larvae yog ib qho yooj yim thiab pom prey rau predators. Ua kom zoo dua ntawm nws cov yeeb ncuab ntau yam los ntawm kev nyiam cov noog thiab cov kab muaj txiaj ntsig rau koj lub vaj. Qee cov tshuaj ntsuab, suav nrog zaub txhwb qaib, dill, fennel, coriander thiab qab zib alyssum, nyiam kab thiab lwm yam tsiaj uas tua cov kab mob.
3. Siv pheromone ntxiab los qhia txog qhov tuaj txog ntawm npauj hauv koj lub vaj.
4. Npog cov nroj tsuag nrog cov kab ntab kom tsis txhob txav cov butterflies los ntawm kev tsaws thiab tso qe. Qhov no tuaj yeem ua rau muaj qhov txawv txav yog tias lub sijhawm raug.
5. Wasps yog cov yeeb ncuab ntuj ntawm cov zaub qhwv loopers, yog li nws pom zoo kom tso Trichogramma wasps los rhuav tshem cov qe.
6. Ntuj av kab mob Bacillus thuringiensis yog ib yam kab mob or BT-kev Tshwj xeeb tshaj yog zoo tiv thaiv inchworms ntawm txhua hom. Siv cov tshuaj tsuag yooj yim los tswj cov kab mob thiab tiv thaiv nplooj ntawm thawj qhov kev puas tsuaj. BTK Cov tshuaj tsuag tsis ua mob rau honeybees lossis noog thiab muaj kev nyab xeeb rau siv nyob ib puag ncig cov tsiaj thiab menyuam yaus.
7. Spinosad, lwm yam tshuaj lom neeg ua los ntawm fermentation, kuj zoo heev. Nws yog cov khoom muaj nyob rau hauv Monterey Garden Bug Spray, ib yam khoom cais raws li cov organic los ntawm USDA National Organic Program thiab teev rau kev siv cov organic los ntawm Organic Review Institute.
8. Lwm cov tshuaj tua kab mob botanical, xws li Safer Txiv lws suav thiab Zaub Zaub Repellent lossis pyrethrin spray, tuaj yeem siv ua qhov kawg.
9. Tom qab sau qoob, faus siv cov qoob loo qoob loo kom rhuav tshem cov cocoons ua ntej cov neeg laus tuaj rau lub caij nplooj ntoos hlav.

Rotating cabbage qoob loo nyob rau hauv ib tsev neeg lub vaj yog ib lub tswv yim zoo, tab sis tsis tas yuav ua tau zoo los tiv thaiv cov nroj tsuag loops. Nightflying npauj nthuav dav thiab yuav pom koj cov zaub txawm tias koj txav mus deb npaum li cas. Qhov no yog vim li cas nws yog ib lub tswv yim zoo los npog cov kab ntab kom tsis txhob npauj tsaws ntawm nplooj thiab tso qe.