Isikhunta yizilwanyana ezincane ezingenza umonakalo omkhulu ezitshalweni; empeleni, masinyane lapho sibona ukuthi kukhona okwenzekayo, imvamisa babe nesikhathi esiningi sokuthelela ingxenye enhle yemizimba yabo, njengoba kunjalo ngalabo ababanga isikhutha.
Lesi sifo singesinye sezijwayelekile. Ngakho-ke, Sizokutshela imikhiqizo yokulwa nesikhunta esebenza kahle kakhulu.
Yini isikhutha?
I-Downy isikhutha yiqembu lezifo ezibangelwa ama-oomycetes omndeni wakwaPeronosporaceae. Yize sithi zisikhunta, ngoba sihlukaniswe phakathi kweqembu lezifo ezibangelwa yilezi zinambuzane, empeleni zingumbumbulu-mbumbulu.
Zisakazwa yizinhlamvu ngenkathi yezimvula nezikhathi ezifudumele (ngamazinga okushisa ayi-10-25ºC). Lapho izinhlamvu sezifakwe engxenyeni ethile yezitshalo (amaqabunga, iziqu noma izithelo), ziqala ukukhula ngaphakathi..
Ziyini izimpawu / ukulimala okukubangelayo?
Sizokwazi uma sinezitshalo ezinesikhunta uma sibona okulandelayo:
- Amabala aphuzi engxenyeni engenhla yamaqabunga
- Ukubukeka kwempuphu empunga engaphansi kwamaqabunga, iziqu kanye / noma izithelo
- Leaf kanye / noma ukwehla kwezithelo
- Ukuboshwa kokukhula
- Ukufa
Ungayisusa kanjani?
Imikhiqizo
Imikhiqizo esingayisebenzisa ukuyisusa yile:
- Ama-fungicides ahlelekile (bangena esitshalweni): gcoba izinsuku ezingama-1-2 ngemuva kokuvela kwezimpawu zokuqala, bese uphinda njalo uma lina.
- I-Fosetyl-Al
- I-Metalaxyl
- Isikhunta esingeyona inqubo: I-Chlorthalonil.
- Zokuvimbela: I-oxychloride yethusi.
Ezinye izinto esingazenza
Ukuvikela / ukuqeda ukubonakala kwesikhunta kunezinto eziningi esingazenza, yiziphi:
- Thena izingxenye ezithintekile
- Ungamanzisi amaqabunga, iziqu noma izimbali lapho unisela
- Susa amakhambi asendle ezitshalweni ezizungezile
- Musa ukuthenga izitshalo ezinezifo
Ngakho-ke, impela singavalelisa unomphela kulezi zifo okuthiwa isikhutha mild.