Illar ciyawa a harkar noma yana da yawa. Nau'in tsire-tsire waɗanda aka ba da matsayin keɓewa sun cancanci kulawa sosai daga manoma, sun fi cutar da ciyawa. Lalacewar noma lokacin da suke yadawa na iya zama babba.
Ana samun ciyawar da aka keɓe daga nau'in dodder a yankin Krasnoyarsk Territory. An rubuta nau'i biyu na wannan nau'in jinsin a cikin yankin - Turai dodder da hop dodder. Dodder kwayar cuta ce kuma tana rayuwa ta hanyar cinye ruwa da abinci mai gina jiki daga shukar mai masaukin, wanda yake jingina tare da taimakon ciyayi na musamman - hastoria. Dodders ba su da ganye; tsire-tsire kamar igiya ce mai launin ja ko launin rawaya kuma an rufe shi da adadi mai yawa na capitate ko racemose inflorescences, wanda yawancin tsaba ke girma. Dodders suna haifuwa duka ta tsaba da vegetatively - ta gutsuttsura mai tushe. Dodders sa na rayuwa cuta, retard girma da kuma ci gaban rundunar shuke-shuke, da kuma sau da yawa kai ga mutuwar dukan sassa na horar da shuke-shuke.
A cikin yankin da ke kusa da yankin Krasnoyarsk - a cikin Altai Territory - wani tsire-tsire na keɓewa yana tsiro - mai rarrafe bitterweed, wanda ke da tsarin tushen ƙarfi wanda ya ratsa zuwa zurfin 10 m. Wannan tsire-tsire ne na perennial, wanda yake kama da wasu nau'ikan. jinsin masara da sarƙaƙƙiya. Ana rarraba 'ya'yan itacen bitterweed tare da gurbataccen kayan iri, hay da bambaro. Itacen shuka yana shuka amfanin gona, lambuna, makiyaya, wuraren kiwo; yana tsiro a kan ƙazantattun hanyoyi da manyan hanyoyi. Yana iya samar da kullu tare da diamita har zuwa 5-6 m a lokacin girma guda ɗaya.
A cikin yankin Altai da yankin Irkutsk akwai nau'in keɓe masu haɗari - trifloral nightshade, wanda yayi kama da sauran wakilan dangin dare. Wannan shuka ce ta shekara-shekara wacce ke haifuwa ta tsaba. Yana mamaye amfanin gona na bazara, gonakin noma da lambunan kayan lambu, filayen da ba a noma da ciyayi. Shuka yana da guba. Idan ya shiga cikin koren abinci, zai iya haifar da guba ga dabbobin gona.
Ba za mu iya yin watsi da tsutsar ragweed a cikin wannan abu ba. Ba a samun wannan nau'in a Siberiya, amma ana iya kawo 'ya'yan itatuwa zuwa sababbin wurare tare da tsaba, abinci da abinci da hatsi, da ƙasa. A baya can, an riga an yi rajistar lokuta na gano barkewar wannan nau'in a cikin yankin Krasnoyarsk, wanda aka kawar da shi nan da nan. Ambrosia wormwood shuka ne na shekara-shekara wanda ya kai tsayi har zuwa mita 2 a lokacin girma kuma yana kama da kamannin wormwood, amma ya fi girma kuma ba shi da wari. Ambrosia da sauri ya zama nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in nau'in phytocenosis). Ambrosia kuma yana da haɗari ga lafiyar ɗan adam: pollen sa yana haifar da cututtuka.
Duk ciyawar keɓewa suna da wahalar kawar da ciyawa. Matakan sarrafawa sun haɗa da yankan lokaci, yankan saiwo, noman amfanin gona na ci gaba, da amfani da maganin ciyawa.
Kwararru daga reshe na Cibiyar Kasafin Kudi ta Tarayya "Rosselkhoztsentr" a yankin Krasnoyarsk suna lura da barkewar ciyawa, gami da mahimmancin keɓewa. A cikin 2021-2022, ma'aikatan reshe sun gano barkewar cutar dodder na Turai da hop dodder a cikin yankin Krasnoyarsk. An mayar da bayanai game da binciken zuwa Hukumar Kula da Yankin Rosselkhoznadzor don yankin Krasnoyarsk.
Mazauna yankunan karkara da masu gidajen rani na iya tuntubar reshen don gano ciyayi, kwari, da cututtukan da aka samu a filayensu domin a samu nasarar shawo kan su a kan kari a nan gaba.