Brown Leaf Spot In Sweet Corn: Yuav Ua Li Cas Tswj Brown Nplooj Spot Ntawm Pob Kws

Cov txheej txheem:

Brown Leaf Spot In Sweet Corn: Yuav Ua Li Cas Tswj Brown Nplooj Spot Ntawm Pob Kws
Brown Leaf Spot In Sweet Corn: Yuav Ua Li Cas Tswj Brown Nplooj Spot Ntawm Pob Kws

Video: Brown Leaf Spot In Sweet Corn: Yuav Ua Li Cas Tswj Brown Nplooj Spot Ntawm Pob Kws

Video: Brown Leaf Spot In Sweet Corn: Yuav Ua Li Cas Tswj Brown Nplooj Spot Ntawm Pob Kws
Video: Complying with Pesticide Laws and Regulations in California Modules 1-9 (Hmong) 2024, Hlis ntuj nqeg
Anonim

pob kws qab zib tsuas yog pob kws. Tsis muaj dab tsi zoo li chomping rau hauv cov kua txiv hmab txiv ntoo ntawm cov pob kws buttered ntawm lub cob rau lub caij ntuj sov hnub. Kev cog qoob loo thiab cog pob kws qab zib yog qhov yooj yim, tab sis muaj qee yam uas koj tuaj yeem saib thaum lub caij cog qoob loo, xws li nplooj nplooj xim av ntawm pob kws, uas yuav ua rau koj cov pob kws-fused. Yog tias koj txhua lub pob ntseg kom paub ntau ntxiv txog cov pob kws qab zib nrog nplooj nplooj, nyeem ntawv - Kuv cog lus tias yuav tsum tsis txhob ua pob kws-y.

Dab tsi yog pob kws qab zib xim av?

Nws yooj yim heev los kuaj pom cov nplooj xim av hauv cov pob kws qab zib, uas yog tshwm sim los ntawm cov kab mob Physoderma maydis. Bands ntawm me me puag ncig los yog oblong daj los yog xim av me ntsis yuav pom nyob rau hauv cov nplooj, thaum lub midrib ntawm nplooj yuav tso saib pawg ntawm tsaus purplish mus rau dub oval me ntsis. Tom qab kev tshuaj xyuas ntxiv, koj tuaj yeem pom cov xim tsaus nti uas muaj nyob rau ntawm nplooj, nplooj nplooj, thiab husks.

Qee cov nplooj tej zaum yuav tsim hlwv zoo li pustules uas muaj cov hmoov sporangia, uas overwinter nyob rau hauv cov pob kws muaj kab mob. Nws tau hais tias lawv tuaj yeem muaj sia nyob hauv cov av thiab cov qoob loo pov tseg rau 2-7 xyoo. Lub sporangia muaj peev xwm tso tawm ntau yam zoospores nrog tails. Cov zoospores no mam li ua luam dej kom nkag mus thiab kis mus rau tom ntej no unsuspecting pob kws cog thaum cov xwm txheej yog.

Cov xwm txheej zoo li cas, koj nug? Zoo li feem ntau cov kab mob fungal, noo noo thiab kub kub yog cov catalysts. Qhov no feem ntau tshwm sim thaum nag los nag, thaum cov spores tau txaws rau hauv thaj chaw ntawm cov nroj tsuag uas muaj dej noo mus rau hauv pas dej, xws li ntawm lub hauv paus ntawm nplooj nplooj los yog whorls. Nws yog nyob rau ntawm cov chaw no uas cov tsos mob ntawm cov nplooj xim av nyob rau hauv cov pob kws qab zib yuav muaj ntau tshaj.

Thiab pob kws qab zib nrog nplooj nplooj

Cov pob kws qab zib xim av tsis yog qhov kev hem thawj tiag tiag, uas txhais tau tias kev lom zem ntawm koj lub caij ntuj sov pob kws ntawm cob tsis yog qhov txaus ntshai tiag tiag. Kev kis kab mob ntawm pob kws qoob loo feem ntau tshwm sim nrog cov txiaj ntsig tsis zoo ntawm cov qoob loo.

Muab cov pob kws qab zib xim av yog cov kab mob fungal, tej zaum koj yuav xav tias kev siv tshuaj tua kab mob yog cov lus teb. Hauv qhov no, tsis tas li ntawd. Muaj, raws li kev sau ntawv no, tsis muaj kev tshawb fawb meej txog qhov ua tau zoo ntawm kev kho mob fungicide rau cov pob kws qab zib xim av los yog cov lus qhia ntawm qhov zaus lossis tus nqi ntawm daim ntawv thov.

Txoj hauv kev zoo tshaj plaws los tswj cov nplooj nplooj xim av ntawm pob kws yog los ntawm kev tillage (kom faus tus kab mob inoculum) thiab kev cog qoob loo.

Pom zoo: