Kuwonongeka kochedwa ndi matenda oopsa a mbatata, tomato ndi mbewu zowonjezereka. Ngati zowonongeka, zokolola zake zachepetsedwa ndi 70%. Choncho, mankhwala a mbatata tubers asanadzalemo kuchokera ku phytophthora ndi njira yofunika kwambiri yomwe imathandiza kuteteza mbewu zam'tsogolo.
Kulimbana mbatata phytophthora
Pamene matenda a mbatata ndi phytophthora amakhudza ake tubers, masamba ndi zimayambira. Choyamba, zizindikiro za matendawa zimawonedwa pazomera za masamba. Masamba amdima amawoneka m'munsi mwa masamba ndi mbali zosiyana za tsinde, zomwe zimakula mofulumira. Kenaka zimayambitsa kuumitsa ndi kuyanika kwa masamba, ndipo pamakhala chinyezi - kuvuta. Pa tubers, phytophthora imadziwonetsera yokha mwa mawonekedwe a grayish, ndiyeno bulauni, zovuta. Pankhaniyi, necrosis ya dzimbiri imafalikira mkati mwa tuber.
Kukula kwa vuto lochedwa kumabwera mofulumira kwambiri. Mu nyengo yozizira ndi yamvula, matendawa amatha kuwononga zomera pamtunda mu masabata awiri.
Kuletsa kuchitika kwa matenda kumathandiza kuchiza mbewu za mbatata musanabzala phytophthora.
Kodi kuchita mbatata ku phytophthora asanadzalemo?
Njira yoyamba idzayendera bwino mbeu yanu kuti ipeze omwe ali ndi kachilombo koyambitsa matendawa. Kuwonjezera apo, matendawa angakhalepo.
Kuwonjezera pamenepo, chidwi chachikulu chiyenera kulipidwa pamalo oti mubzala mbatata. Malowa ayenera kusankhidwa bwino atakulungidwa ndipo mwamsanga zouma pambuyo mvula. Monga lamulo, nthendayi imathamangira pafupi ndi malo amtanda wa nkhalango, kumalo otsika m'munda. Pa sitepeko sayenera kukhala mitengo yamphamvu. Chifukwa cha maonekedwe a phytophthora mu mbatata akhoza kukhala ndi matenda kuchokera ku phwetekere mbande, zomwe zakhudzidwa ndi matendawa. Choncho, zimalimbikitsa kudzipatula.
Kukonzekera kumera kwa tubers ziyenera kuchitika. Izi zidzathandizira kukonza chitukuko ndikuchepetsa mwayi wowonongeka kwawo pofika poipa.
The processing wa mbatata ku phytophthors ikuchitika ndi zotsatirazi kukonzekera:
- Maxim, KS;
- Phytosporin;
- Ridomil Gold MC;
- Chithunzi;
- Shirlan;
- Ditan M 45.
Chithandizo cha tubers za mbatata ndi zokonzekera zapaderazi zidzachedwa kuchepetsa matendawa kwa masiku 10-14. Izi ndizofunikira kuti muteteze mbewu yanu yamtsogolo.