Kodi mungachite bwanji mawanga akuda pa masamba a duwa?

Olima amalima pamapangidwe awo nthawi zambiri amawoneka mdima pa masamba a duwa, ndipo samadziwa zomwe angachite pazimenezi. Matendawa amachititsa bowa Marssonina rosae, zomwe zimabweretsa pang'onopang'ono tchire kufa.

Kodi zimawoneka bwanji?

Mawanga akuda pa masamba a maluwa amatanthauza matenda omwe amayamba pang'onopang'ono. Choyamba, mdima umapezeka pakati pa tsamba la masamba, ndipo potsiriza kumakhala malo akuluakulu. Pasanapite nthawi, mdima wakuda ndi imvi umayamba kutembenuka chikasu, ndipo tsamba limafota. Vuto la matendawa ndi kuti pang'onopang'ono ngati simutenga kanthu, bowa la masamba lifalikira ku thunthu, ndiyeno ku mizu, motero kuwononga mbewu kuchokera mkati.

Kupewa black spotting

Kuti asamalimbane ndi matenda osokoneza, akhoza kupewa. Kwa izi, pali njira zingapo zomwe mungasinthire mkhalidwe wanu wa tchire:

• malo oyenerera a rosary ndicho chinsinsi cha kupambana; komwe kulibe madzi ndi mthunzi wamasana, zouluka ndizochepa zomwe zimayambitsa matenda;
• Kuwona mtunda wokwanira pakati pa tchire kwa mitundu yosiyanasiyana ya maluwa kudzathandizanso kupeŵa mavuto; mpweya wabwino sungalole kuti bowa kupanga ndi kuwonjezeka;
• Patapita nthawi namsongole samapatsa mvula kapena mame kwa nthawi yaitali kuti asawonongeke m'malo ano ndipo sipadzakhalanso mkhalidwe wabwino wa matendawa.

Kuchiza kwa mdima wakuda wa maluwa

Pali njira zingapo komanso njira zowonetsera mawanga akuda pa masamba a duwa. Monga lamulo, iwo ayenera kuti aziphatikizidwa kuti apeze zotsatira zabwino:

1. Popanda kuyembekezera matendawa, mukhoza kuyamba kugwiritsa ntchito mitundu iwiri ya mankhwala omwe amathandiza kuchotseratu matendawa kapena kupewa kutuluka. Choyamba, kupopera mankhwala ndi mankhwala omwe ali ndi mankhwala a mancozeb adzafunika. Mankhwalawa akuchitidwa masabata usiku uliwonse madontho amame. Pambuyo pake, mankhwala ogwiritsidwa ntchito ndi triazole amagwiritsidwa ntchito.
2. Pambuyo mvula ndi kuthirira izo zimalangizidwa kudzaza mitengo ikuluikulu ndi phulusa.
3. Nthawi zonse kupopera mbewu mankhwalawa ndi kulowetsedwa kwa adyo kudzawonjezera kukana kwa matenda a fungal.
4. Nthaŵi ndi nthawi, nthaka yomwe udzuwu umamera amafunika kuwombera fungicides, kuchotsa tizilombo toyambitsa matenda. Ndizothandiza makamaka kuchita izi patapita mvula yambiri.
5. Masamba okhudzidwa ndi mbali zina za duwa amachotsedwa ndi pruner yoyera. Masamba onse odwala ndi nthambi ayenera kutenthedwa, osasungidwe pa malo.