Stalk Rot In Sweet Corn - Kho Kho Pob Kws Qab Zib Nrog Rotting Stalks

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Stalk Rot In Sweet Corn - Kho Kho Pob Kws Qab Zib Nrog Rotting Stalks
Stalk Rot In Sweet Corn - Kho Kho Pob Kws Qab Zib Nrog Rotting Stalks

Video: Stalk Rot In Sweet Corn - Kho Kho Pob Kws Qab Zib Nrog Rotting Stalks

Video: Stalk Rot In Sweet Corn - Kho Kho Pob Kws Qab Zib Nrog Rotting Stalks
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Tsis muaj ib yam dabtsi yuav poob siab li ntxiv ib tsob ntoo tshiab rau lub vaj xwb thiaj li tsis muaj kab mob los yog kab mob. Cov kab mob xws li txiv lws suav los yog cov pob kws qab zib stalk rot feem ntau ua rau cov neeg ua teb tsis txhob sim cog cov nroj tsuag no dua. Peb coj cov kab mob no ua rau tus kheej tsis ua haujlwm tab sis qhov tseeb, txawm tias cov neeg ua liaj ua teb tau ntsib cov teeb meem no. Stalk rot nyob rau hauv cov pob kws qab zib muaj ntau heev uas nws ua rau 5-20% kev lag luam tawm los poob txhua xyoo. Dab tsi ua rau pob kws qab zib stalks rot? Mus nyeem ntawv rau cov lus teb.

About Stalk Rot in Sweet Corn

Rotting pob kws stalks tuaj yeem tshwm sim los ntawm cov kab mob fungal lossis kab mob. Feem ntau ua rau cov pob kws qab zib nrog rotting stalks yog kab mob fungal hu ua anthracnose stalk rot. Cov kab mob fungal no tshwm sim los ntawm cov kab mob Colletotrichum graminicola. Nws cov tsos mob feem ntau yog ci ntsa iab dub qhov txhab ntawm lub stalk. Spores ntawm anthracnose stalk rot thiab lwm yam fungal rots sai loj hlob nyob rau hauv kub, av noo. Lawv tuaj yeem kis tau los ntawm kev sib cuag, kab kab, cua, thiab txaws rov qab los ntawm cov av muaj kab mob.

Lwm hom kab mob fungal qab zib pob kws rot yog fusarium stalk rot. Ib qhoCov tsos mob ntawm fusarium stalk rot yog liab kab mob ntawm cov pob kws kab mob. Cov kab mob no tuaj yeem cuam tshuam rau tag nrho cov nroj tsuag thiab tuaj yeem pw tsaug zog hauv cov pob kws. Thaum cov noob no cog, tus kab mob tseem kis mus ntxiv.

Ib yam kab mob kab mob qab zib stalk rot kab mob yog tshwm sim los ntawm cov kab mob Erwinia chrysanthemi pv. Zeae. Cov kab mob kab mob nkag mus rau cov pob kws cog qoob loo los ntawm qhov qhib los yog qhov txhab. Lawv tuaj yeem kis tau los ntawm cov nroj tsuag mus rau cog los ntawm kab.

Thaum cov no tsuas yog qee yam ntawm cov kab mob fungal thiab kab mob uas ua rau stalk rot nyob rau hauv cov pob kws qab zib, feem ntau muaj cov tsos mob zoo sib xws, loj hlob nyob rau tib qhov kub, av noo, thiab feem ntau kis los ntawm tsob ntoo mus rau tsob ntoo. Cov tsos mob ntawm cov pob kws qab zib stalk rot yog discoloration ntawm stalk; grey, xim av, dub, los yog liab kab mob ntawm lub stalk; dawb fungal loj hlob ntawm stalks; wilting los yog distorted pob kws nroj tsuag; thiab hollow stalks uas khoov, tawg, thiab topple.

Kev kho mob pob kws qab zib nrog Rotting Stalks

pob kws cov nroj tsuag uas raug mob lossis ntxhov siab yog cov kab mob rot ntau dua.

Cov nroj tsuag uas muaj nitrogen tsawg dhau thiab/lossis cov poov tshuaj yog qhov ua rau muaj kab mob stalk, yog li kev fertilization kom zoo tuaj yeem pab kom cov nroj tsuag tsis muaj kab mob. Kev cog qoob loo tuaj yeem ntxiv cov khoom noj uas xav tau rau hauv av thiab txwv tsis pub kis kab mob.

Ntau yam kab mob uas ua rau cov pob kws rotting tej zaum yuav pw dormant hauv av. Sib sib zog nqus tilling teb ntawm cov qoob loo tuaj yeem tiv thaiv kev kis kab mob los ntawm txaws rov qab.

Vim kab kab feem ntau ua lub luag haujlwm sib kis cov kab mob no, kev tswj kab tsuag yog ib feem tseem ceeb ntawm kev tswjqab zib pob kws stalk rot. Cov kws cog qoob loo kuj tau tsim ntau yam kab mob tshiab uas tiv taus cov pob kws qab zib.

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