Scorch On Pecan Leaves - Kho Ib tsob ntoo Pecan Nrog Kab Mob Kab Mob Kab Mob

Cov txheej txheem:

Scorch On Pecan Leaves - Kho Ib tsob ntoo Pecan Nrog Kab Mob Kab Mob Kab Mob
Scorch On Pecan Leaves - Kho Ib tsob ntoo Pecan Nrog Kab Mob Kab Mob Kab Mob

Video: Scorch On Pecan Leaves - Kho Ib tsob ntoo Pecan Nrog Kab Mob Kab Mob Kab Mob

Video: Scorch On Pecan Leaves - Kho Ib tsob ntoo Pecan Nrog Kab Mob Kab Mob Kab Mob
Video: Spreading Fertilizer On Pecan Trees 2024, Kaum ib hlis
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Cov kab mob scorch ntawm pecans yog ib yam kab mob tshwm sim nyob rau sab qab teb sab hnub tuaj United States xyoo 1972. Scorch ntawm pecan nplooj yog thawj zaug xav tias yog kab mob fungal tab sis xyoo 2000 nws raug txheeb xyuas tias yog kab mob kab mob. Tus kab mob no tau kis mus rau lwm qhov chaw hauv Teb Chaws Asmeskas, thiab thaum pecan kab mob nplooj scorch (PBLS) tsis tua cov ntoo pecan, nws tuaj yeem ua rau poob loj. Kab lus hauv qab no tham txog cov tsos mob thiab kev kho mob rau tsob ntoo pecan nrog cov kab mob nplooj scorch.

Cov tsos mob ntawm tsob ntoo Pecan nrog cov kab mob nplooj Scorch

Pecan kab mob nplooj scorch cuam tshuam ntau tshaj 30 cultivars nrog rau ntau yam ntoo. Scorch on pecan nplooj manifests raws li ntxov ntxov defoliation thiab txo nyob rau hauv ntoo loj hlob thiab kernel hnyav. Cov nplooj hluas tig daj los ntawm lub taub thiab cov npoo mus rau nruab nrab ntawm nplooj, nws thiaj li browning tag nrho. Tsis ntev tom qab cov tsos mob tshwm sim, cov nplooj me me poob. Tus kab mob no tuaj yeem pom ntawm ib ceg lossis ua rau tag nrho tsob ntoo.

Cov kab mob nplooj scorch ntawm pecans tuaj yeem pib thaum ntxov caij nplooj ntoos hlav thiab nyhav dhau los ua kev puas tsuaj ntau dua li lub caij ntuj sov. Rau cov neeg cog hauv tsev, tsob ntoo cuam tshuam nrog PBLS tsuas yog qhov tsis zoo, tab sis raukev lag luam cog qoob loo, kev lag luam poob tuaj yeem yog qhov tseem ceeb.

PBLS yog tshwm sim los ntawm cov kab mob ntawm cov kab mob Xylella fastidiosa subsp. multiplex. Tej zaum nws yuav tsis meej pem nrog pecan scorch mites, lwm yam kab mob, teeb meem khoom noj khoom haus, thiab dej qhuav. Pecan scorch mites tuaj yeem pom tau yooj yim nrog lub lens tes, tab sis lwm yam teeb meem yuav tsum tau sim ua kom paub meej lossis tsis lees paub lawv qhov muaj.

Kev kho mob Pecan Bacterial Leaf Scorch

Ib zaug ib tsob ntoo tau kis kab mob scorch, tsis muaj kev kho mob zoo. Tus kab mob no zoo li tshwm sim ntau zaus hauv qee cov cultivars dua li lwm tus, txawm li cas los xij, txawm tias tam sim no tsis muaj cov cultivars resistant. Barton, Cape Ntshai, Cheyenne, Pawnee, Rome, thiab Oconee yog txhua tus raug tus kab mob no.

Kab mob nplooj scorch ntawm pecans tuaj yeem kis tau ob txoj hauv kev: los ntawm kev kis kab mob lossis los ntawm qee yam xylem pub kab (leafhoppers thiab spittlebugs).

Vim tias tsis muaj txoj kev kho mob zoo nyob rau lub sijhawm no, qhov kev xaiv zoo tshaj plaws yog txo qis qhov tshwm sim ntawm pecan nplooj scorch thiab ncua nws cov lus qhia. Qhov ntawd txhais tau tias yuav cov ntoo uas muaj ntawv pov thawj tsis muaj kab mob. Yog ib tsob ntoo zoo li muaj nplooj scorch, rhuav tshem tam sim ntawd.

Nyob tsob ntoo uas yuav siv rau hauv paus cag yuav tsum tau tshuaj xyuas seb puas muaj cov tsos mob ntawm tus kab mob ua ntej grafting. Thaum kawg, tsuas yog siv scions los ntawm cov ntoo uas tsis muaj kab mob. Saib xyuas tsob ntoo thoob plaws lub caij cog qoob loo ua ntej sau cov scion. Yog hais tias ntoo rau grafting los yog sau ntawm scions tshwmkis kab mob, rhuav tshem tsob ntoo.

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