Powdery mildew ndi matenda omwe amawononga tomato.Zimawononga kwambiri masamba, petioles ndi zipatso za phwetekere.

Kodi zizindikiro za tomato powdery mildew ndi ziti?

Kwa phwetekere wolimidwa panja, masamba, masamba, ndi zipatso zazomera zimatha kutenga kachilomboka.Pakati pawo, masamba ndi omwe amakhudzidwa kwambiri, ndikutsatiridwa ndi zimayambira, ndipo zipatso zimakhala zochepa kwambiri.

Kumayambiriro kwa matendawa, mawanga ang'onoang'ono obiriwira amawonekera pa petioles ndi masamba a zomera, kenako amakula pang'onopang'ono, kusonyeza mawanga apinki osakhazikika okhala ndi zoyera zoyera.

Pachiyambi, nkhungu wosanjikiza ndi ochepa, ndiyeno wandiweyani, kusonyeza anamva ngati, matenda mawanga ndipo pang'onopang'ono kufalikira mozungulira.

Matendawa akamakula, masamba a chomeracho adzakutidwa ndi ufa woyera ndipo pang'onopang'ono amalumikizana mzidutswa, ndipo masambawo amasanduka achikasu ndi ofiirira.Nthambi zokha zatsala.

Matenda a Tomato:

1. Chinyezi chachikulu ndicho chinthu chachikulu chomwe chimayambitsa matenda, ndipo nyengo yozizira imakhalanso yoyenera kuti pakhale powdery mildew.Kutentha koyenera koyambira ndi 16-24 ℃.

2. Chinyezi choyenera cha kumera kwa desiccation-resistant conidia ndi 97-99%, ndipo filimu yamadzi si yabwino kumera kwa spores.

3. Mvula ikagwa, nyengo imakhala youma, chinyezi m'munda chimakhala chambiri, ndipo mildew imatha kuchitika.

4. Makamaka pamene kutentha kwakukulu ndi chilala zimasinthasintha ndi kutentha kwakukulu ndi chinyezi chachikulu, matendawa ndi ovuta.

Kodi mankhwala ophera powdery mildew ndi ati?

Pls titumizireni kuti mufunse.