Ndaganiza zoyesera mankhwala ophera fungicides pa soya koyamba chaka chino.Kodi ndingadziwe bwanji fungicide yomwe ndiyenera kuyesa, ndipo ndiyenera kuigwiritsa ntchito liti?Ndidziwa bwanji ngati zingathandize?
Gulu la alangizi ovomerezeka a Indiana omwe akuyankha funso ili akuphatikizapo Betsy Bower, Ceres Solutions, Lafayette;Jamie Bultemeier, agronomist, A&L Great Lakes Lab, Fort Wayne;ndi Andy Like, mlimi ndi CCA, Vincennes.
Bower: Yang'anani posankha mankhwala ophera bowa okhala ndi njira zosakanikirana zomwe ziphatikizepo osachepera triazole ndi strobiluron.Ena amaphatikizanso chinthu chatsopano cha SDHI.Sankhani yomwe ili ndi ntchito yabwino pamasamba a frogeye.
Pali nthawi zitatu za soya zomwe anthu ambiri amakambirana.Nthawi iliyonse ili ndi ubwino wake ndi kuipa kwake.Ndikadakhala watsopano kugwiritsa ntchito mankhwala ophera bowa wa soya, ndikanalunjika pagawo la R3, pamene nyemba zimangoyamba kupanga.Panthawi imeneyi, mumapeza bwino masamba ambiri omwe ali padenga.
Ntchito ya R4 ndiyochedwa kwambiri pamasewera koma ikhoza kukhala yothandiza kwambiri ngati tili ndi chaka chochepa cha matenda.Kwa munthu woyamba kugwiritsa ntchito mankhwala ophera bowa, ndikuganiza kuti R2, yotulutsa maluwa, ndiyofulumira kwambiri kugwiritsa ntchito fungicide.
Njira yokhayo yodziwira ngati mankhwala ophera fungasi akukolola bwino ndikuphatikiza cheke chopanda ntchito m'munda.Osagwiritsa ntchito mizere yomaliza pa cheke chanu, ndipo onetsetsani kuti m'lifupi mwake mukupanga cheke kukhala kukula kwa mutu wophatikizira kapena chozungulira chophatikiza.
Posankha mankhwala opha fungicides, yang'anani kwambiri pazinthu zomwe zimawongolera matenda omwe mudakumana nawo m'zaka zapitazi poyang'ana m'minda yanu isanakhudze mbewu komanso ikadzadza.Ngati chidziwitsocho palibe, yang'anani chinthu chamitundumitundu chomwe chili ndi machitidwe angapo.
Bultemeier: Kafukufuku akuwonetsa kuti kubweza kwakukulu pazachuma pakugwiritsa ntchito kamodzi kwa fungicide kumachokera mochedwa R2 mpaka kuyambika kwa R3.Yambani kuyang'ana minda ya soya osachepera sabata kuyambira pachimake.Yang'anani kwambiri pa matenda ndi kukakamizidwa kwa tizilombo komanso siteji yakukula kuti muwonetsetse kuti nthawi yoyenera kugwiritsa ntchito fungicide.R3 imadziwika ngati pali 3/16-inch pod pa imodzi mwa mfundo zinayi zapamwamba.Ngati matenda monga nkhungu zoyera kapena banga la masamba a frogeye awonekera, mungafunikire kuchiritsa pasanafike R3.Ngati mankhwala achitika asanakwane R3, ntchito yachiwiri ingafunike pakadzadza mbewu.Ngati muwona nsabwe za m'masamba, nsikidzi, kachilomboka ka nyemba kapena kafadala za ku Japan, ndiye kuti ndibwino kuwonjezera mankhwala ophera tizilombo pakugwiritsa ntchito.
Onetsetsani kuti mwasiya cheke chosasamalidwa kuti zokolola zifanizidwe.
Pitirizani kuyang'ana m'munda mukatha kugwiritsa ntchito, molunjika pa kusiyana kwa kuthamanga kwa matenda pakati pa magawo omwe athandizidwa ndi omwe sanachiritsidwe.Kuti fungicides iwonjezere zokolola, payenera kukhalapo matenda kuti fungicide ithetse.Yerekezerani zokolola mbali ndi mbali pakati pa mankhwala ndi osapatsidwa mankhwala m'madera angapo a munda.
Monga: Nthawi zambiri, kugwiritsa ntchito mankhwala ophera bowa kuzungulira gawo la kukula kwa R3 kumapereka zokolola zabwino kwambiri.Kudziwa fungicide yabwino kwambiri yoti mugwiritse ntchito matendawa asanayambe kungakhale kovuta.Mwachidziwitso changa, mankhwala opha fungicides okhala ndi njira ziwiri zochitira komanso kuchulukitsa kwambiri pamasamba a frogeye agwira ntchito bwino.Popeza ndi chaka chanu choyamba ndi mankhwala a soya fungicides, ndikusiyirani mizere ingapo kapena magawo ogawa kuti muwone momwe zinthu zikuyendera.
Nthawi yotumiza: Jun-15-2021