Ndasankha kuyesa mankhwala ophera fungicide pa soya koyamba chaka chino. Ndingadziwe bwanji kuti ndigwiritse ntchito mankhwala ophera fungicide ati, ndipo ndiyenera kuwagwiritsa ntchito liti? Ndingadziwe bwanji ngati angathandize?
Gulu la alangizi a mbewu ovomerezeka ku Indiana omwe akuyankha funsoli ndi Betsy Bower, Ceres Solutions, Lafayette; Jamie Bultemeier, katswiri wa zaulimi, A&L Great Lakes Lab, Fort Wayne; ndi Andy Like, mlimi ndi CCA, Vincennes.
Bower: Yang'anani kusankha mankhwala ophera fungicide okhala ndi njira zosiyanasiyana zogwirira ntchito zomwe zikuphatikizapo triazole ndi strobiluron. Ena alinso ndi mankhwala atsopano ogwiritsira ntchito SDHI. Sankhani imodzi yomwe ili ndi ntchito yabwino pa tsamba la frogeye.
Pali nthawi zitatu zoyambira soya zomwe anthu ambiri amakambirana.Nthawi iliyonse ili ndi zabwino ndi zovuta zake.Ndikanakhala watsopano kugwiritsa ntchito mankhwala ophera tizilombo toyambitsa matenda a soya, ndikanayang'ana pa gawo la R3, pamene nyemba zikuyamba kupangika. Pa gawoli, mumapeza kuphimba bwino masamba ambiri omwe ali padenga.
Kugwiritsa ntchito R4 kwachedwa kwambiri pamasewerawa koma kungakhale kothandiza kwambiri ngati matenda athu sakuchepa chaka chino. Kwa munthu amene amagwiritsa ntchito mankhwala ophera fungicide koyamba, ndikuganiza kuti R2, yomwe ndi maluwa onse, ndi yoyambirira kwambiri kugwiritsa ntchito mankhwala ophera fungicide.
Njira yokhayo yodziwira ngati mankhwala ophera fungicide akuwonjezera phindu ndikuphatikiza mzere woyesera wopanda ntchito m'munda. Musagwiritse ntchito mizere yomaliza pa mzere wanu woyesera, ndipo onetsetsani kuti mwapanga m'lifupi mwa mzere woyesera kukhala wofanana ndi mutu wosakaniza kapena wosakaniza.
Posankha mankhwala ophera fungicide, yang'anani kwambiri mankhwala omwe angathandize kuchepetsa matenda omwe mwakumana nawo m'zaka zapitazi mukamafufuza minda yanu musanayambe komanso nthawi yodzaza tirigu. Ngati chidziwitso chimenecho sichikupezeka, yang'anani mankhwala osiyanasiyana omwe amapereka njira zingapo zogwirira ntchito.
Bultemeier: Kafukufuku akusonyeza kuti phindu lalikulu kwambiri pa ndalama zomwe zimagwiritsidwa ntchito poika mankhwala ophera fungicide kamodzi limachokera ku R2 mpaka R3 yoyambirira. Yambani kufufuza minda ya soya osachepera sabata iliyonse kuyambira nthawi yophukira. Yang'anani kwambiri matenda ndi tizilombo komanso nthawi yokulira kuti muwonetsetse kuti mankhwalawa akugwiritsidwa ntchito nthawi yoyenera. R3 imadziwika pamene pali thumba la mainchesi 3/16 pa imodzi mwa mfundo zinayi zapamwamba. Ngati matenda monga nkhungu yoyera kapena malovu a tsamba la frogeye aonekera, mungafunike kuchiza R3 isanafike. Ngati chithandizo chikuchitika R3 isanafike, mungafunike kugwiritsanso ntchito kachiwiri pambuyo pake panthawi yodzaza tirigu. Ngati muwona nsabwe za soya zazikulu, tizilombo toyamwa, tizilombo toyambitsa matenda a nyemba kapena tizilombo toyambitsa matenda aku Japan, kuwonjezera mankhwala ophera tizilombo pa mankhwalawa kungakhale koyenera.
Onetsetsani kuti mwasiya cheke chosachiritsidwa kuti muyerekezere phindu.
Pitirizani kufufuza munda mukamaliza kugwiritsa ntchito, poyang'ana kwambiri kusiyana kwa kuthamanga kwa matenda pakati pa magawo omwe achiritsidwa ndi omwe sanachiritsidwe. Kuti mankhwala ophera fungicide apereke kuchuluka kwa zokolola, payenera kukhala matenda kuti mankhwala ophera fungicide athetsedwe. Yerekezerani zokolola mbali imodzi pakati pa omwe achiritsidwa ndi omwe sanachiritsidwe m'madera angapo a munda.
Monga: Kawirikawiri, kugwiritsa ntchito mankhwala ophera tizilombo toyambitsa matenda pa nthawi ya kukula kwa R3 kumapereka zotsatira zabwino kwambiri. Kudziwa mankhwala ophera tizilombo toyambitsa matenda abwino kwambiri oti mugwiritse ntchito musanayambe matenda kungakhale kovuta. Malinga ndi zomwe ndakumana nazo, mankhwala ophera tizilombo toyambitsa matenda okhala ndi njira ziwiri zogwirira ntchito komanso zotsatira zabwino kwambiri pa frogeye leaf spot agwira ntchito bwino. Popeza ndi chaka chanu choyamba ndi mankhwala ophera tizilombo toyambitsa matenda a soya, ndingasiye mizere ingapo yowunikira kapena minda yogawanika kuti ndidziwe momwe zinthu zikuyendera.
Nthawi yotumizira: Juni-15-2021