Ubushyuhe bukabije muri Michigan muri iki gihe ntabwo bwigeze bubaho kandi bwatunguye benshi ukurikije uburyo pome ikura vuba.Hamwe n'imvura iteganijwe kuwa gatanu, 23 Werurwe, no mucyumweru gitaha,ni ngombwa ko ubwoko bwibihingwa byanduye bikingira iki cyorezo cyanduye hakiri kare.
Mugihe cyambere cyumwaka wa 2010 (utaracyari kare nkuko bimeze ubu), ibihumyo bya scab byari inyuma gato yibiti bya pome mugutezimbere kuko twagize igihe kinini cyo gutwikira urubura biganisha mugihe cyagumishaga ibihumyo. imbeho ikonje ikonje.Kubura urubura bitwikira iyi "mpeshyi" yo muri 2012 no kubura ubushyuhe bukonje mugihe cyitumba byerekana ko igihumyo cyiteguye kugenda ubu.
Pome mu majyepfo y’iburengerazuba bwa Michigan iri kuri cluster ihamye kandi kuri 0.5-cm yicyatsi kibisi kuri Ridge.Kurinda ibiti muriki gihe cyiterambere ryihuse bidasanzwe nintambwe yambere yingenzi yo gukumira icyorezo cya pome.Turashobora kuba dufite imitwaro myinshi ya spore hanze muriki gihe cyambere cyo kwandura ibisebe.Nubwo nta mubare munini wicyatsi kibisi gihari, kwandura ibisebe hejuru yicyatsi birashobora kugira ingaruka zikomeye mubukungu.Ibi ni ukubera ko ibisebe bitangiriye hafi yicyatsi kibisi bizabyara conidia hagati yijimye nijimye, igihe gakondo iyo ascospores yibanze iri mumibare myinshi.Bizagorana cyane kugenzura ibisebe munsi yumuvuduko mwinshi wa inoculum hamwe no gukura kwibiti mugihe cyakera aho gukura byihuse bivamo ingirabuzimafatizo nyinshi zidakingiwe hagati yimiti ya fungiside.
Fungiside nziza iboneka mugukumira ibisebe muriki gihe cyigihe cyambere ni uburyo bwagutse bwo kurinda: Captan na EBDCs.Birashoboka ko byatinze ku muringa (reba ingingo ibanza, “Gukoresha umuringa mugihe cyambere bizafasha kwirinda kumva 'ubururu' kubyerekeye indwara”).Na none, birashyushye cyane kuri anilinopyrimidine (Scala na Vangard) zifite umusaruro mwiza mubushyuhe bukonje (hejuru muri 60 na munsi).Ikigega-kivanze cya Captan (ibiro 3 / Captan 50W) na EBDC (ibiro 3) nuburyo bwiza bwo kugenzura ibisebe.Uku guhuza kwifashisha imikorere yibikoresho byombi hamwe no kugumana no kugabura kwa EBDCs.Intera intera igomba kuba ikomeye kuruta ibisanzwe kubera ubwinshi bwikura rishya.Kandi, witondere Captan, kuko gukoresha Captan ukoresheje amavuta cyangwa ifumbire mvaruganda ishobora gutera phytotoxicity.
Turimo kumva impungenge nyinshi (zemejwe rwose) kubyerekeye umusaruro wibihingwa muri 2012. Ntidushobora guhanura ikirere, ariko kurwanya ibisebe hakiri kare ni ngombwa.Niba turetse ibisebe bifata hakiri kare, kandi dufite umusaruro, fungus izabona umusaruro nyuma.Igisebe nikintu kimwe dushobora kugenzura muri iki gihe cyambere - reka tubikore!
Igihe cyo kohereza: Werurwe-30-2021