Varimi vanoda kuchengeta marestail uye mamwe mwaka wechando egore senge henbit uye yepepuru yakafa nettle kubva pamusoro peminda yavo ye2021 vanogona kutanga kutanga kudonha uku.
"Marestail iri nyore kwazvo kudzora mukudonha zvichienzaniswa nechirimo kana mu-mwaka," anodaro John Pawlak, mukuru weValent USA maneja wezvekuvandudza chirongwa. Kudonha herbicide kunyorera kunogona kubatsira nix yechirimo saradhi mbiya yemasora kubva mukugadzira uyezve kudzima zvirimwa-kumashure zvirevo zvinofambidzana nemuchirimo burndown kurapwa.
"Haingoderedze huwandu hwehuswa chete asiwo kurimwa kwembeu yemasora," anodaro Jake Hoxmeier, nyanzvi yezvevapurazi mumunda wePioneer. "Zvakanakawo kudzoka muchirimo [nemishonga yekuuraya sora yemwaka wekukura] uye usakundwa nekukura kwemasora."
Zvichakadaro, hapana chakafukidzwa nemasora chinoreva kuti ivhu rinodziya nekukasira mukati megore, izvo zvinobatsira kuona kudyara kwekutanga, inowedzera Pawlak.
"Rimwe dambudziko ratinaro nderekuti isu [muIllinois] takakura pakuisa anhydrous ammonia mukudonha," anodaro Aaron Hager, University of Illinois Extension nyanzvi yesora. "Varimi vazhinji uye vanoshandisa tsika vanoisa pfungwa pazviri kwete pagore rechando."
Zvakadaro, nguva inowanzo kuvepo yekudonha herbicide kurapwa kunyangwe varimi vaisa anhydrous ammonia. "Makore mazhinji, panogona kuve nekubudirira kwakanaka mukudzora mwaka wechando nezvikumbiro zvakagadzirwa kuKutenda," Hager anowedzera.
KUSVIRA KWEPAGORE KWEZVAKA
Mwaka wechando wegore haugone kuunganidza kutaridzika kwemasora senge waterhemp uye Palmer amaranth, asi ivo vanogona kudzora kugadzirwa kwezvirimwa. Kazhinji chickweed inogona kugadzira dense mat iyo inovhara ivhu uye inononoka kuomesa munda, zvichikonzera kudyara kunonoka. Makore echando anopawo nzvimbo yekuchengetedza makonye matema anoisa mazai ayo anotungamira kukurumwa nemakonye, ayo anokuvadza chibage mushure mekumera.
Ditto yesoybean cyst nematode (SCN). Kunyangwe pasina gore rezhizha senge waterhemp inomiririra SCN, iri nyaya yakasarudzika ine mwaka wechando gore senge henbit uye munda pennycress, iyo inogona kutsigira akakosha eSNN ekuberekesa mazinga.
"Hazvireve kuti zvinokwezva cyst nematode ye soya nekuti haigoni kufamba zvakanaka pachayo," anodaro Greg Tylka, weIowa State University Extension nematologist. Imwe SCN painenge yave mumunda, zvakadaro, nguva yechando masora egore rose anogona kuve anochengeterwa tupukanana. "Vanoomesera dambudziko nekuvapa chikafu chematode, kunyangwe varimi vachirima chirimwa chisingaite sechibage," anodaro Tylka. Nhamba dzeSCN dzicharamba dzichikwira, kunyangwe mune rimwe gore rekurima mukutenderera kwechibage-soya.
"Pakutanga isu tinodzora ivo, zvirinani kuve tiri panguva yekukura mwaka," anowedzera Hager.
ZVIMWE ZVINODAWA mukudonha
Sezvo vazhinji marestail vanhu iye zvino vachiramba glyphosate, kudonha kunyorera kweiyo herbicide kunenge kusingashande kupfuura chitubu kana zhizha. Nekudaro, 2,4-D inoshanda mushe senge isingadhuri application yekudonha, anodaro Hager. Izvo zvakare haina manomwe- kusvika-makumi matatu-mazuva-ekudyara-kudzora masosi kune ma soya uye mashanu- kusvika kumanomwe-mazuva manomwe ezviyo zvinofambidzana nechitubu 30-D kunyorera.
Varimi vanogona zvakare kushandisa yakakwira 2,4-D mitengo mukudonha, izvo zvinogona kukonzeresa kune inoshanda kudzora marestail uye mamwe mwaka wechando gore, anodaro Hager. Mune ma soya, kunyorera kwekupedzisira kwechirimo kunogona kungoshandisa 1 pint ye2,4-D, uye mazuva manomwe anofanira kupfuura kusati kwatanga kudyara, anodaro Hager. Sezvo kudyara isiri nyaya mukudonha, varimi vanogona kukwira 2,4-D mitengo kusvika ku1 quart paeka.
“Kana iwe ukanyorera 2,4-D vhiki kana maviri mushure mekunge chibage chakachengetwa pakati- kusvika mukupera kwaGunyana, uye mwaka wechando hausati wanyatsobuda mukatikati mekupera kwaGumiguru, ungangoda kuwedzera zvakasara senge metribuzin [Boka 5, Sencor] kana chlorimuron [Boka 2, Chakarebesa], ”anodaro Hager.
Kana mamiriro ekunze akanganisa zvirongwa zvekushandisa, varimi vanogona kugara vachishandisa ekutanga-echinyakare mishonga yekuuraya herbicide pachinzvimbo, anodaro Ron Geis, nyanzvi yeCorteva Agriscience yekusimudzira musika.
"Hapana chakanakira kuita chirongwa chekudonha," anodaro Geis. “Tinogona kusakwanisa kuita chirongwa ichi, asi unogona kungoisundira shure muchirimo kana usingakwanise. Chaunowana mukudonha kuri nyore kudzora sora nekuti idiki. ”
Kusiyana kwenzvimbo kunogona kuitika, anodaro Geis. MuIowa, semuenzaniso, Interstate-80 inzvimbo inoshanduka.
"Kuchamhembe kweI-80, isu tinokwanisa kuzadza burndown yekudonha nemabasa akasara ayo anogona kutipa mwaka wakachena wekudyara uye masvondo akati wandei ekudzivirira zvisaririra pasati paitwa application postemergence, tichifunga kuti inzvimbo yekusarima," anodaro. "Chatakachinja inguva chete."
Nekudaro, chechipiri preemergence kunyorera kumaodzanyemba kwetambo iyi kuchazodiwa, nekuda kwekukura kwemasora zvinogona kukurudzirwa nechirimo chakambosvika, anodaro.
Varimi vanofanirwa kufunga nezvezvinonetsa carryover pavanosarudza zvigadzirwa zvinosara, zvinoyeuchidza Hager. Mishonga yakawanda inouraya mishonga haina kunyorerwa kunyorera application, saka tarisa mavara kutanga. Semuenzaniso, atrazine inoshandiswa zvakanyanya pamberi uye mushure mekubuda kwechibage, asi haina kunyorerwa kudonha kunyorera. Mimwe mishonga inouraya sora inobvumidzwa kunyorera application ine nguva yekushandisa uye maganho enzvimbo, anodaro Hager.
Dambudziko rakaoma apo varimi veMidwestern varimi vanodyara soya kutanga kwaApril kuMidwest, Hager anodaro. Kunyangwe kudyara kwekutanga kwesoya kunogona kuwedzera mukana wegoho, kudyara kwekutanga kunogona kuita kuti soya inyanye kutapukira kune herbicide carryover pane yakazodyarwa gare gare, anodaro Hager.
HAPANA garandi
Masora-emahara ematsutso eminda anogadzirwa nemishonga yekudonha haigone kugara uchiguma.
"Kunonoka kushanda mumwaka wechirimo kunogona kupa kuti minda igare yakasvibira goho risati radyarwa," anodaro Hager. Chimwe chinokatyamadza ndechekuti zhizha regore senge zvakajairika makwayana uye smartweed inogona kubuda nekukurumidza kupfuura kana mwaka wechando gore raive richiripo.
Kudonha kunyorera hakuzodzikise zhizha repagore musoro wehuswa senge waterhemp, chero.
Ndosaka varimi vachifanira kurangarira hunhu hwesora preemergence inosara sora, anodaro Lance Tarochione, an Asgrow / DeKalb technical agronomist. Izvo zvakanyanya zvaive chokwadi mugore rakanyorova senge 2019, apo kunaya kukuru kwemvura kwakadzivirira kunyorera panguva yekumira kunyorera.
"Iri raive gore rakanakisa rekusara nezvigadzirwa zvekutanga, sezvo minda isina marapirwo akasara kuita sango," anodaro.
DZIMWE DZIMWE PASI STEROIDS
Kutinhira hakusi iko chete chinhu chinofamba kubva kumadokero kuenda kumabvazuva. Varimi muMontana nekumadokero kweNorth Dakota vari kuona chiitiko chakafanana neiyo nguva yechando yegoridhe rakamanikana.
"Ndinofunga nezvayo sedandelion pane steroids," anodaro Bridgette Readel, Corteva Agriscience nyanzvi yekuvandudza musika. “Iwe unofunga kuti ingori dandelion, uye zvichave nyore kudzora ne clopyralid [Stinger] kana 2,4-D [ese maGriki 4 mishonga inouraya mishonga), uyezve inokurumidza kukura uye yotunga misoro yemaruva yakawanda inomira pamusoro pe chirimwa. ”
Parizvino, zvave kungogumira kuzviyo uye kupuriza zvirimwa senzungu uye mapizi emunda. Narrowleaf hawksbeard yakabuda muSaskatchewan uye zvakare kuburikidza neMontana uye kumadokero kweNorth Dakota. Readel anotarisira kuti irambe ichienda kumabvazuva gore rino kuNorth Dakota.
Parizvino, mishonga yesora ine mashoma basa pairi, anodaro. Kudonha kurapa inzira, asi funga kurambidzwa kwezvirimwa pakusarudza mishonga yesora, taura North Dakota State University (NDSU) masayendisiti wesora. NDSU nhungamiro dzekudonha kurapwa dzinosanganisira zvinotevera:
- Glyphosate + Express (kana Panoflex) +/- 2,4-D
- Glyphosate + Rodza +/- 2,4-D
- Glyphosate + 2,4-D
- Glyphosate + dicamba
- Glyphosate + Hwakakosha +/- 2,4-D