2024 Tus sau: Chloe Blomfield | [email protected]. Kawg hloov kho: 2023-12-15 23:55
Northern nplooj blight hauv pob kws yog qhov teeb meem loj rau cov liaj teb loj dua li cov neeg ua teb hauv tsev, tab sis yog tias koj cog pob kws hauv koj lub vaj Midwestern, koj yuav pom cov kab mob fungal no. Cov fungus uas ua rau tus kab mob overwinters nyob rau hauv cov khib nyiab thiab proliferates thaum nruab nrab kub thiab ntub tej yam kev mob. Koj tuaj yeem tswj hwm thiab tiv thaiv kab mob fungal lossis siv tshuaj tua kab mob.
Signs of Northern Corn Leaf Blight
Northern corn leaf blight yog ib qho kab mob tshwm sim los ntawm cov kab mob uas tshwm sim nyob rau hauv Midwest, nyob qhov twg pob kws yog zus. Tus kab mob feem ntau tsuas yog ua rau kev puas tsuaj tsawg, tab sis nws yuav ua rau cov qoob loo poob hauv qee yam mob. Qee hom pob kws muaj kev cuam tshuam ntau dua, thiab thaum tus kab mob pib ntxov, kev poob ntau dua.
Tus yam ntxwv ntawm pob kws nrog rau sab qaum teb nplooj blight yog tsim ntawm cov kab mob ntawm nplooj. Lawv yog cov ntev, nqaim lesions uas nws thiaj li tig xim av. Cov kab mob kuj tuaj yeem tsim cov xim greyish ciam teb nyob ib ncig ntawm lawv cov npoo. Cov kab mob pib ua rau ntawm nplooj qis thiab kis mus rau nplooj siab dua thaum tus kab mob loj tuaj. Thaum huab cua ntub, cov kab mob tuaj yeem tsim cov kab mob uas ua rau lawv saib qias neeg lossisplua plav.
Control of Northern Corn Leaf Blight
Kev tswj tus kab mob no feem ntau yog tsom rau kev tswj hwm thiab kev tiv thaiv. Ua ntej, xaiv cov pob kws lossis cov hybrids uas tiv taus lossis tsawg kawg muaj kev tiv thaiv rau sab qaum teb pob kws nplooj blight.
Thaum koj cog pob kws, xyuas kom nws tsis ntub rau lub sijhawm ntev. Cov fungus uas ua rau tus kab mob no yuav tsum tau nyob nruab nrab ntawm rau txog rau 18 teev ntawm nplooj ntub dej los tsim. Cog pob kws nrog rau qhov chaw txaus rau huab cua thiab dej thaum sawv ntxov kom cov nplooj tuaj yeem qhuav txhua hnub.
Cov fungus overwinters nyob rau hauv cov khoom cog, yog li nws tseem ceeb heev rau kev tswj cov nroj tsuag kab mob. Tilling pob kws rau hauv av yog ib lub tswv yim, tab sis nrog lub vaj me me nws yuav ua rau muaj kev nkag siab ntau dua kom tsuas yog tshem tawm thiab rhuav tshem cov nroj tsuag cuam tshuam.
Kho sab qaum teb pob kws nplooj blight yog siv cov fungicides. Rau feem ntau cov neeg ua teb hauv tsev tsis xav tau cov kauj ruam no, tab sis yog tias koj muaj kab mob phem, koj yuav xav sim cov tshuaj no. Tus kab mob feem ntau pib thaum lub sij hawm txhob lo lo ntxhuav, thiab qhov no yog thaum siv tshuaj tua kab mob fungicide.
Pom zoo:
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