Matenda osasangalatsawa amawadetsa nkhaŵa ambiri wamaluwa, chifukwa panthawi zovuta, mwachitsanzo - mvula ndi yozizira chilimwe, zimabwera pafupi ndi malo onse.
Powdery mildew ndi matenda a fungal etiology. Zimayambitsa maonekedwe oyera kapena ofiira kumbuyo kwa masamba, zomwe zimawatsogolera. M'nkhani yosanyalanyazidwa, bowa limayambitsa matenda, maluwa ndi zipatso za nkhaka. Pofuna kuteteza ndiwo zamasamba kuti asapite kudzikoli, muyenera kudziwiratu momwe mungagwiritsire ntchito powdery mildew nkhaka.
Chithandizo cha nkhaka ku powdery mildew
Ndikofunika kwambiri kumayambiriro kwa matendawa kuti asiye kufalikira. Panthawi imeneyi, njira zothetsera anthu zingagwiritsidwe ntchito:
- tincture wa marigolds - wosweka maluwa (theka la chidebe) ayenera kuumirizidwa m'madzi ofunda (lembani chidebe pamoto) mkati mwa masiku awiri ndikuwonjezera sopo yotsuka (40 g) ku njira yothetsera;
- Kutayidwa kwa mahatchi - zouma (100 g) kapena mahatchi atsopano (1 makilogalamu) ndi madzi (10 l) kwa tsiku, ndiye wiritsani kwa maola awiri, ozizira, kupsyinjika ndikugwiritsire ntchito pa 1: 5;
- mullein - mu chiŵerengero cha 1: 3 kuchepetsani ndi madzi, kunena masiku atatu ndi katatu kusungunuka ndi madzi musanagwiritse ntchito.
Zonsezi zimatanthawuza kuti aziwaza mosakaniza nkhaka kamodzi pa sabata mpaka zizindikiro ziwonongeke. Koma ngati powdery mildew pa nkhaka yayamba kale, ndipo kukonzekera zachilengedwe sikuthandiza, njira zamagetsi zimagwiritsidwa ntchito. Izi ndi izi:
- yankho la soda phulusa (0.5%) ndi sopo;
- yankho la Bordeaux madzi (1%);
- yankho la ferrous sulphate (5%).
Kwathu kunyalanyaza powdery mildew wa nkhaka amachiritsidwa ndi poizoni mankhwala. Ndizo zokha zomwe zingagwiritsidwe ntchito pokhapokha kuti palibe zipatso za zipatso. Pakati pa mankhwala atsopano, yankho la "Karatan" linasakanizidwa mu malita 10 a madzi okonzeka bwino. Muyenera kukambirana sabata iliyonse kapena awiri.