Pamene zowola za bulauni zimachitika pazipatso zokhwima za chitumbuwa, timadontho tating’ono tofiirira timayamba kuonekera pamwamba pa chipatsocho, kenako n’kufalikira mofulumira, kuchititsa kuti chipatso chonsecho chiwole bwino, ndipo zipatso zodwala pamtengowo zimauma ndi kupachika pamtengo.

Zomwe zimayambitsa zowola zofiirira

1. Kukana matenda.Zimamveka kuti mitundu yayikulu ya chitumbuwa yowutsa mudyo, yokoma, komanso yakhungu yopyapyala ndiyomwe imagwidwa ndi matendawa.Mwa mitundu ikuluikulu yamachitumbuwa, Hongdeng ali ndi matenda olimbana bwino kuposa Hongyan, Purple Red, ndi zina zambiri.
2. Malo obzala.Malinga ndi alimi, matendawa ndi ovuta kwambiri m'minda ya zipatso za chitumbuwa m'madera otsika.Izi zitha kukhala chifukwa cha kusayenda bwino kwa ngalande m'malo otsika.Ngati ulimi wothirira uli wosayenera kapena ukukumana ndi mvula yosalekeza, n'zosavuta kupanga malo okhala ndi chinyezi chambiri komanso ngakhale kudzikundikira madzi m'minda, kupanga Pangani malo abwino kuti pakhale zowola za chitumbuwa.
3. Kutentha kwachilendo ndi chinyezi.Chinyezi chochuluka ndichomwe chimayambitsa kufalikira kwa zowola zofiirira, makamaka zipatso zikacha.Ngati pali nyengo yamvula yosalekeza, zowola zofiirira za chitumbuwa nthawi zambiri zimakhala zowopsa, zomwe zimapangitsa kuchuluka kwa zipatso zowola ndikupangitsa kuwonongeka kosasinthika.
4. Munda wa zipatso watsekedwa.Alimi akabzala mitengo ya chitumbuwa, ngati yabzalidwa mothinana kwambiri, izi zimapangitsa kuti mpweya ukhale wovuta komanso kuonjezera chinyezi, chomwe chimathandiza kuti matenda ayambe kuchitika.Kuonjezera apo, ngati kudulira sikuli koyenera, kumapangitsanso kuti munda wa zipatso ukhale wotsekedwa ndipo mpweya wabwino ndi mpweya umakhala wosauka.

 

Njira zopewera ndi kuwongolera
1. Kupewa ndi kuwongolera zaulimi.Tsukani masamba ogwa ndi zipatso pansi ndikuzikwirira kwambiri kuti muchotse magwero a mabakiteriya opitilira muyeso.Dulani bwino ndi kusunga mpweya wabwino ndi kufalitsa kuwala.Mitengo yamatcheri yomwe imabzalidwa m'malo otetezedwa iyenera kupumira mpweya munthawi yake kuti muchepetse chinyezi mu shedi ndikupanga zinthu zomwe sizingathandizire kuti matenda ayambe.
2. Kulamulira kwa mankhwala.Kuyambira pa kumera ndi kukula kwa tsamba, tsitsani tebuconazole 43% SC 3000 nthawi yankho, thiophanate methyl 70% WP 800 nthawi yothetsera, kapena carbendazim 50% WP 600 nthawi yothetsera masiku 7 mpaka 10.