Ubushushu obuzinzileyo eMichigan ngoku abukho ngaphambili kwaye bubambe abaninzi ngokumangala malunga nendlela ama-apile akhula ngayo ngokukhawuleza. Ngeemvula ezixelwe kwangaphambili ngoLwesihlanu, ngoMatshi 23, nakwiveki ezayo,Kubalulekile ukuba imihlanganiselwa enokuchaphazeleka ukhwekhwe ikhuselwe kwesi siganeko silindelekileyo sosulelo lokhwekhwe.
Ekuqaleni kuka-2010 (eyayingekabikho kwangoku sinjalo ngoku), ukhoko lokungunda lwalusemva kancinane kwemithi yama-apile ekuphuhliseni ngenxa yokuba siye sanexesha elide lokugqunywa kwekhephu elikhokelela kwixesha lonyaka elaligcina ukungunda kukho kumagqabi obusika obubandayo. Ukungabikho kwesigqubuthelo sekhephu kule "ntwasahlobo" ka-2012 kunye nokungabikho kwamaqondo okushisa okwenene ngexesha lasebusika kubonisa ukuba i-scab fungus ilungele ukuhamba ngoku.
Ama-apile akumzantsi-ntshona weMichigan akwiqela eliqinileyo kunye nencam eluhlaza eyi-0.5-intshi kwiRidge. Ukukhusela imithi ngeli xesha lophuhliso olukhawulezayo ngendlela emangalisayo linyathelo lokuqala elibalulekileyo lokuthintela ubhubhane wokhwekhwe. Sinokuba nomthwalo ophezulu wespore phaya kweli xesha lizayo lokuqala losulelo lokhwekhwe. Nangona kungekho sixa sikhulu sezicubu eziluhlaza ezikhoyo, usulelo lwe-scab kwincam eluhlaza lunokuba neziphumo ezibi kwezoqoqosho. Oku kungenxa yokuba izilonda zokhwekhwe eziqalwa malunga nencam eluhlaza zihlala zivelisa iconidia phakathi kwepinki kunye nepetali yokuwa, ixesha lesiqhelo apho ii-ascospores eziphambili zingamanani aphezulu. Kuya kuba nzima kakhulu ukulawula ukhwekhwe phantsi koxinzelelo oluphezulu lwe-inoculum kunye nokukhula komthi kwixesha elizayo apho ukukhula okukhawulezileyo kubangela izicubu ezingakhuselekanga phakathi kokufakwa kwemichiza yokungunda.
Eyona michiza yokungunda ekhoyo yokulawula ukhwekhwe ngeli xesha lexesha lokuqala lonyaka zizikhuseli ezibanzi: iCaptan kunye ne-EBDCs. Kunokwenzeka ukuba lide kakhulu ixesha lobhedu (jonga inqaku elidlulileyo, "Ukusetyenziswa kobhedu ngexesha lokuqala kuya kunceda ukunqanda ukuziva 'ubuhlungu' malunga nezifo") Kwakhona, kushushu kakhulu kwi-anilinopyrimidines (i-Scala kunye neVangard) enokusebenza kangcono kumaqondo okushisa apholileyo (aphezulu kwi-60s ephantsi nangaphantsi) I-tank-mix ye-Captan (3 lbs / A Captan 50W) kunye ne-EBDC (3 lbs) yinto egqwesileyo yokulawula ukhwekhwe indibaniselwano kunye ne-efficaition ithatha i-advanteji yolawulo kunye ne-efficai Ukusasazwa ngokutsha kwe-EBDCs kufuneka kube nzima kunesiqhelo ngenxa yobungakanani bokukhula okutsha kwakhona, qaphela i-Captan nge-oyile okanye ezinye izichumisi ze-foliar zingakhokelela kwi-phytotoxicity.
Siva inkxalabo eninzi (eqinisekisiweyo ngokupheleleyo) malunga nethemba lesityalo sika-2012. Asikwazi ukuqikelela imozulu, kodwa ukulawula ukhwekhwe kwangethuba kubalulekile. Ukuba sivumela ukhwekhwe ukuba lubambe kwangoko, kwaye sinesityalo, umngundo uya kufumana isityalo kamva. Ukhwekhwe yenye yezinto esinokuzilawula kweli xesha lonyaka lokuqala – masiyenze!
Ixesha lokuposa: Mar-30-2021