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 (kitari kikiri kare nkuko bimeze ubu), igihumyo cya scab cyari inyuma gato yibiti bya pome mugutezimbere kuko twagize igihe kinini cyurubura rwa shelegi biganisha mugihe cyogukomeza ibihumyo mubibabi bikonje bikonje. Kubura urubura bitwikiriye 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 mugihe asosiporo 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 yo gukoresha 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"). Nanone, birashyushye cyane kuri anilinopyrimidine (Scala na Vangard) zifite umusaruro mwiza ku bushyuhe bukonje (hejuru cyane muri za 60 na munsi) bisanzwe kubera ubwinshi bwikura rishya Nanone, witondere Captan, kuko gukoresha Captan hamwe namavuta cyangwa ifumbire mvaruganda bishobora gutera phytotoxicity.
Turimo kumva impungenge nyinshi (zemejwe rwose) kubyerekeye umusaruro wumwaka wa 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