Txawm hais tias qhov nrov ornamental shrub lilac suav hais tias yog cov muaj zog thiab muaj zog, nws tsis tiv thaiv kab mob thiab kab tsuag. Tshwj xeeb tshaj yog yog tias xim av tshwm rau ntawm nplooj lilac, koj yuav tsum xub xav txog cov kab mob kab tsuag thiab xyuas cov hav txwv yeem rau nws. Koj tuaj yeem pom cov kab tsuag tshwj xeeb tshaj plaws ntawm lilacs thiab koj tuaj yeem ua dab tsi txog lawv hauv cov ntsiab lus meej no.
Cov kab tsuag twg tuaj yeem tua lilacs?
Cov kab ntau tshaj plaws ntawm lilacs yog cov nplooj lilac nplooj miner (Gracillaria syringella), lilac nplooj weevil (Otiorhynchus rotundatus), hornets (Vespa crabro) thiab gall mites (Eriophyes loewi). Txhawm rau tiv thaiv nws, peb pom zoo kom sau, daim ntawv thov neem lossis tua txau.
Lilac leafminer, leafminer lossis lilac npauj (Gracillaria syringella)
Cov nplooj miner yog qhov tsis pom tseeb, npauj npaim me me uas nws cov pupae overwinter ncaj qha rau ntawm lilac. Lub larvae thaum kawg hatch nyob rau hauv lub Tsib Hlis thiab noj feem ntau ntawm nplooj. Lawv kuj tsis tshua pom nyob rau hauv cov mos tua axes. Nplooj miners tsis tsuas yog muaj ntau heev ntawm lilacs, txawm hais tias thawj tiam feem ntau tawm me ntsis kev puas tsuaj tom qab.
- Cov tsos mob: txiv ntseej-xim av me ntsis ntawm nplooj, tuag thiab browning cheeb tsam, nplooj nplooj puas lawm, yellowish larvae nyob rau hauv nplooj
- Control: ib txwm tsis tsim nyog, txau thaum budding
Lilac nplooj weevil, dub weevil (Otiorhynchus rotundatus)
Nov yog cov kab liab-xim av txog li rau millimeters ntev uas tsuas yog noj hmo ntuj thiab siv sijhawm nruab hnub hauv qab nplooj thiab lwm qhov chaw nkaum hauv av. Nws cov larvae kuj nyob hauv cov av thiab tuaj yeem ua rau cov hauv paus hniav puas tsuaj heev vim lawv tshaib plab. Kev kis kab mob tsuas yog txiav txim siab los ntawm kev siv dag zog: Muab lub lauj kaub av nplaum uas muaj ntoo shavings hauv qab lilac, cov kab dub dub yuav siv qhov no ua qhov chaw nkaum thiab koj tuaj yeem sau tau.
- Symptoms: eroded nplooj edges
- Kev sib ntaus sib tua: sau, yog tias muaj kab mob hnyav, kev kho mob nrog neem yog ua tau, siv cov nematodes xws li roundworms ntawm genus Heterorhabditis
Hornets (Vespa Crabro)
Hornets feem ntau siv ntoo lossis tawv ntoo los tsim lawv lub zes, uas lawv tev ntawm cov ntoo lawv tus kheej - piv txwv li los ntawm lilacs.
- Cov tsos mob: tev lossis noj cov pob txha ntawm cov tua, tsis tshua muaj nplooj wilting thiab cov ceg tuag
- Control: tsuas yog siv tau thaum muaj kab mob loj heev. Hornets raug tiv thaiv thiab yog li ntawd yuav tsum tau nyob ib leeg
Gall mites (Eriophyes loewi)
Cov no yog cov mites me me, tsuas yog li 0.2 txog 0.5 millimeters loj, uas yog cov arachnids thiab pub rau cov kua txiv hmab txiv ntoo.
- Cov tsos mob: lub teeb ntsuab nplooj tsis muaj xim, tuab buds, luv tua, tsim ntawm "witches' brooms"
- Control: tshem tawm cov nplooj, tsuag tua thaum ntxov caij nplooj ntoos hlav nrog rapeseed roj npaj (neem), loosen lub hauv paus disc, cog qej qus
Tip
Yog tias tsis muaj kab tsuag tuaj yeem pom txawm tias muaj kev puas tsuaj rau lilac, feem ntau muaj kab mob fungal tom qab nws.
