Kuv tau txiav txim siab sim tshuaj fungicides ntawm soybeans thawj zaug xyoo no.Yuav ua li cas kuv thiaj paub tias fungicide sim, thiab thaum twg kuv yuav tsum tau siv nws?Kuv yuav paub li cas yog nws pab?
Lub koom haum Indiana tau lees paub qoob loo teb cov lus nug no suav nrog Betsy Bower, Ceres Solutions, Lafayette;Jamie Bultemeier, agronomist, A&L Great Lakes Lab, Fort Wayne;thiab Andy Like, neeg ua teb thiab CCA, Vincennes.
Bower: Saib xaiv cov khoom siv tshuaj tua kab mob nrog cov qauv sib xyaw uas yuav suav nrog yam tsawg kawg yog triazole thiab strobiluron.Qee qhov tseem suav nrog cov khoom xyaw tshiab SDHI.Xaiv ib qho uas muaj kev ua haujlwm zoo ntawm qhov chaw frogeye nplooj.
Muaj peb lub sijhawm soybean theem uas ntau tus neeg sib tham.Txhua lub sijhawm muaj nws qhov zoo thiab qhov tsis zoo.Yog tias kuv yog tus tshiab siv cov tshuaj tua kab mob taum, kuv yuav tsom mus rau theem R3, thaum cov pods nyuam qhuav pib tsim.Nyob rau theem no, koj tau txais kev pab zoo ntawm feem ntau ntawm cov nplooj hauv canopy.
Daim ntawv thov R4 yog qhov zoo nkauj lig hauv qhov kev ua si tab sis tuaj yeem ua tau zoo heev yog tias peb muaj kab mob tsawg xyoo.Rau cov neeg siv tshuaj tua kab mob thawj zaug, kuv xav tias R2, tag nrho cov paj, yog ntxov dhau los siv cov tshuaj tua kab mob fungicide.
Tib txoj hauv kev kom paub yog tias cov tshuaj tua kab mob txhim kho cov txiaj ntsig zoo yog suav nrog cov ntawv txheeb xyuas uas tsis muaj daim ntawv thov hauv thaj teb.Tsis txhob siv cov kab kawg rau koj daim tshev strip, thiab nco ntsoov ua qhov dav ntawm daim tshev strip tsawg kawg qhov loj ntawm lub taub hau sib txuas lossis ib qho sib txuas.
Thaum xaiv cov fungicides, tsom mus rau cov khoom uas tswj cov kab mob uas koj tau ntsib nyob rau xyoo dhau los thaum tshawb xyuas koj cov teb ua ntej thiab thaum lub sij hawm sau qoob loo.Yog tias tsis muaj cov ntaub ntawv ntawd, nrhiav cov khoom siv dav dav uas muaj ntau tshaj ib hom kev ua.
Bultemeier: Kev tshawb fawb qhia tau hais tias qhov zoo tshaj plaws rov qab los ntawm peev rau ib daim ntawv thov ntawm fungicide tshwm sim los ntawm lig R2 mus rau thaum ntxov R3 daim ntawv thov.Pib scouting soybean teb yam tsawg kawg ib lub lim tiam pib ntawm Bloom.Tsom ntsoov rau kab mob thiab kab siab nrog rau theem kev loj hlob kom ntseeg tau tias lub sijhawm siv tshuaj tua kab mob zoo tshaj plaws.R3 tau sau tseg thaum muaj 3/16-nti pod ntawm ib qho ntawm plaub ntawm sab saud.Yog tias cov kab mob xws li pwm dawb lossis frogeye nplooj tshwm, koj yuav tsum tau kho ua ntej R3.Yog tias kev kho mob tshwm sim ua ntej R3, daim ntawv thov thib ob yuav xav tau tom qab thaum lub sij hawm sau qoob.Yog tias koj pom cov noob qoob loo tseem ceeb, stinkbugs, taum nplooj kab los yog cov kab Japanese, qhov sib ntxiv ntawm cov tshuaj tua kab rau daim ntawv thov yuav raug pom zoo.
Nco ntsoov tawm ib qho kev kuaj tsis kho kom cov txiaj ntsig tuaj yeem sib piv.
Txuas ntxiv mus saib tom qab daim ntawv thov, tsom mus rau qhov sib txawv ntawm cov kab mob siab ntawm qhov kho thiab tsis kho.Txhawm rau tiv thaiv cov kab mob fungicides, yuav tsum muaj cov kab mob fungicides los tswj.Sib piv cov txiaj ntsig ntawm ib sab ntawm kev kho thiab tsis kho hauv ntau tshaj ib cheeb tsam ntawm thaj chaw.
Zoo li: Feem ntau, daim ntawv thov fungicide nyob ib ncig ntawm R3 kev loj hlob theem muab cov txiaj ntsig zoo tshaj plaws.Paub qhov zoo tshaj plaws fungicide siv ua ntej pib ntawm tus kab mob yuav nyuaj.Hauv kuv qhov kev paub dhau los, fungicides nrog ob hom kev ua haujlwm thiab kev ntsuas siab ntawm frogeye nplooj tau ua haujlwm zoo.Txij li thaum nws yog koj thawj xyoo nrog soybean fungicides, kuv yuav tawm ob peb daim tshev los yog cais teb los txiav txim siab txog kev ua haujlwm ntawm cov khoom.
Post lub sij hawm: Jun-15-2021