Ib tsob ntoo sequoia yog ib yam tshwj xeeb thiab feem ntau yog kev khav theeb thiab kev xyiv fab ntawm nws tus tswv. Yog tias cov tsos mob ntawm tus mob tshwm sim tam sim ntawd, muaj kev txhawj xeeb loj. Kev saib xyuas tsis raug yog feem ntau raug liam. Hauv tsab xov xwm no koj yuav pom tias yuav ua li cas kom tsis txhob ua yuam kev, paub txog kab mob thiab yuav ua li cas los tiv thaiv lawv lossis tiv thaiv lawv zoo dua.
Cov kab mob dab tsi tuaj yeem cuam tshuam cov ntoo sequoia thiab yuav tiv thaiv li cas?
Sequoia tsob ntoo kab mob xws li tua tuag feem ntau tshwm sim los ntawm ascomycete Botryosphaeria dothidea. Cov tsos mob muaj xws li cov koob xim av, cov ceg tuag, qhov nyob hauv lub kaus mom, tsim cov resin thiab bark necrosis. Kev Tiv Thaiv: Tsis txhob raug mob, dej txaus thiab tiv thaiv dej.
Sequoia tua tuag - kab mob ntau tshaj ntawm Sequoia
tsob ntoo sequoia muaj tawv tawv heev uas tiv thaiv nws los ntawm hluav taws kub hav zoov. Txawm li cas los xij, tus loj heev tsis tiv taus Botryosphaeria dothidea, ib qho fungus uas ua rau tua tuag. Qhov tsis yooj yim ntawm cov kab tsuag yog tias nws tsuas tshwm sim tom qab lub hlis. Txawm li cas los xij, koj tuaj yeem paub cov cim qhia ntawm tus kab mob ua ntej.
Symptoms
Tus tua tuag tshwm sim los ntawm Botryosphaeria dothidea manifests nws tus kheej raws li nram no:
- cov koob tig xim av ntawm cov lus qhia
- Txoj kev tuag ntawm cov ceg ntoo cuam tshuam
- cov no poob tawm, tawm qhov pom ntawm lub crown
- muaj zog resin tsim
- Bark necrosis ntawm lub cev
Note: tsis txhob confuse lub browning ntawm koob nrog lub caij nplooj zeeg ntawm nplooj. Tsuas yog nyob rau hauv ntug dej hiav txwv evergreen redwood yog qhov hloov pauv pom tseeb ntawm kev mob.
Caus
Kub kub thiab dej me me ua rau tsob ntoo sequoia yooj yim rau cov kab tsuag. Kev ywg dej tsis txaus lossis qhov kev xaiv tsis raug ntawm qhov chaw yog kev saib xyuas yuam kev. Txawm li cas los xij, thaum waterlogging tshwm sim, hauv paus rot tshwm sim.
Combat
Yog tias koj pom cov tsos mob ntawm koj tsob ntoo sequoia, koj yuav tsum ua sai sai ua ntej cov fungus nkag mus rau hauv. Hauv qhov no, nws pab tshem tawm cov tua uas twb muaj xim av.
Kev tiv thaiv
Botryosphaeria dothidea nkag mus rau hauv lub cev ntawm tsob ntoo sequoia los ntawm qhov txhab ntawm cov tawv ntoo. Yog tias koj pom tias muaj kev raug mob, koj yuav tsum kaw lawv nrog ntawv ci. Nco ntsoov khaws cov av noo txhua lub sijhawm. Tshwj xeeb tshaj yog nyob rau lub caij ntuj sov, nws yog ib qhov tsim nyog los dej sequoia ob peb zaug hauv ib hnub. Kev lim dej pab tiv thaiv dej.
