Cov nag lossis daus loj heev thiab siab lig - lub caij ntuj sov tshav kub ua rau cov qoob loo kom loj hlob sai.
"Yog li npaj txhij sau tsis yog los ntawm daim ntawv qhia hnub, tab sis los ntawm cov qoob loo," said Cody Hornaday, tus kws tshaj lij agronomist nrog Koch Agronomic Services.
"Ib feem ntawm sab qaum teb Illinois thiab sab qaum teb Indiana tau raug hammered kiag li ob peb lub lis piam dhau los, nrog cov ntaub ntawv los nag hauv ntau qhov chaw," Hornaday tau hais nyob rau lub lim tiam dhau los Farm Progress Show. "Tab sis kuv xav tias qhov loj tshaj plaws uas pib tawm thoob plaws hauv cheeb tsam [Midwest] yog cua sov."
Hornaday tau khiav qhov kev loj hlob ntawm chav tsev suav txij lub Peb Hlis 1 txog rau thaum kawg ntawm Lub Yim Hli nyob rau sab qab teb Indiana.
"Raws li cov ntaub ntawv ntawd, peb nyob hauv 50 GDUs ntawm qib siab tshaj plaws ntawm GDU tsub zuj zuj ntawm cov ntaub ntawv," nws hais.
Ib yam li thoob plaws ntau thaj chaw ntawm Midwest, qhov kub thiab txias thaum hmo ntuj tau tsav ntau qhov GDU suav, Hornaday ntxiv.
Cov dej nag ntau tau pab cov qoob loo nrog qhov no, nws hais.
Hornaday tau sau tseg tias "Tab sis qhov cua sov tau nrawm nrawm dua," Hornaday tau sau tseg. "Nyob rau yav qab teb Indiana thiab ib feem ntawm Kentucky, cov neeg ua liaj ua teb yog lub lis piam zoo rau ob lub lis piam ua ntej sau qoob tam sim no, nrog qee tus neeg ua liaj ua teb pib ntxov li ob lub lis piam dhau los."
Variability yog zaj dab neeg
Huab cua variability kuj yog ib feem ntawm cov qoob loo xyoo no.
Stefan Swenson, Syngenta tus thawj coj khoom lag luam tau hais tias "Muaj thaj chaw uas muaj nag ntau dhau thiab [cov cheeb tsam nrog] nag tsis txaus,"
Cov xov xwm zoo yog tias piv nrog 2025, kab mob tsis tau hnyav li thoob plaws Midwest. Txawm li cas los xij, tsis txhob cia koj tus neeg saib xyuas tuaj sau. Cov nag lossis daus thaum ntxov tau txhawb nqa cov nitrogen poob, thaum tom qab - lub caij los nag tuaj yeem ua rau fusarium crown rot.
Ob leeg tuaj yeem ua rau muaj teeb meem kev ruaj ntseg thiab qhov chaw poob thaum sau qoob loo, yog li tsom cov teb no rau kev sau ua ntej.
Swenson tau hais tias "Los ntawm thiab loj, muaj cov kab mob [xws li fusarium crown rot] uas tsis pom zoo li cov kab xeb yav qab teb xyoo tas los," Swenson tau hais. "Cov kab mob no tuaj yeem cuam tshuam rau lig- lub caij sawv cev uas koj tsis tuaj yeem pom tam sim no tab sis yuav pom meej thaum sau qoob loo. Tam sim no yog lub sijhawm zoo tawm mus thiab tshawb nrhiav teb, khawb cov hauv paus hniav thiab txiav cov ceg ntoo kom pom tias puas muaj rot tshwm sim."
Variability txuas mus rau cov nroj tsuag
Kev hloov pauv kuj cuam tshuam rau kev tswj cov noob qoob loo xyoo no.
Sam Breckenridge, ib tug Helena Agri-Tus thawj tswj khoom lag luam tau hais tias "Qee lub teb tau huv si, thaum lwm lub teb tab tom pib muaj plaub hau me ntsis,"
Vim li cas qhov txawv?
Cov teb uas tau txais cov tshuaj tua kab uas seem seem nrog ntau hom kev txiav txim zoo tshaj plaws tswj cov nroj tsuag xws li waterhemp. Nws tseem tshwm sim lig rau lub caij, thiab lub yim hli ntuj nag tuaj yeem ua kom qhov kev nyiam no.
Jim Talbert, tus kws tshaj lij cov khoom lag luam rau Helena Agri -Enterprise hais tias "Waterhemp yog txhoj puab heev thiab tuaj yeem dhau los ntawm [soybean] canopy."
Qhov no kuj siv tau rau Palmer amaranth. Zoo li waterhemp, no pigweed - tam sim no nyob rau hauv Midwestern xeev xws li Iowa - tiv thaiv ntau hom tshuaj tua kab mob.
Talbert tau hais tias "Kev sib tshooj seem uas txwv lawv ua ntej lawv pib yog lub tswv yim zoo tshaj plaws rau kev tswj hwm lawv," Talbert tau hais. "Thaum lawv tawm mus, lawv loj hlob hnyav heev uas koj tsis tuaj yeem ua tau zoo dua lawv tsuas yog siv tshuaj tua kab mob tom qab xwb."
