Mhedzisiro yeimwe greenhouse miedzo munguva ino yechando neyechirimo uye mhedzisiro yezvidzidzo zvemumunda mumwaka uno wekukura zvakaratidza kuti Palmer Palm yemuriwo dicamba (DR) inoshingirira.Ava vanhu veDR vakagadzwa muCrockett, Gibson, Madison, Shelby neWarren matunhu uye pamwe mamwe akati wandei.
Chiyero chekupikisa dicamba chakaderera, anenge 2.5 nguva.Mune chero munda wakapihwa, dhigirii reinfestation rinotanga nehomwe diki, uko chirimwa chemubereki wechikadzi chinodyarwa muna 2019, uye nzvimbo inovhara akati wandei maeka.Izvi zvinogona kufananidzwa neyokutanga yakanyorwa glyphosate-resistant Palmer mar muriwo wakawanikwa muTennessee muna 2006. Panguva iyoyo, varimi vakawanda vakanga vachiri kutonga zvakanaka glyphosate Palmer mar muriwo, nepo mamwe minda Munhu wacho akaona kutiza mumunda make.
Pakatanga kuoneka zvirimwa zveXtend panzvimbo, zvanga zvisingashamisi kuti miriwo yePalmer mar itize dicamba, iyo yakanga yarasika kwese kwese.Kupukunyuka uku kuchakura kushoma kana kusakura mumasvondo maviri kusvika matatu.Bva, zvizhinji zvezvirimwa zvichavharwa nezvirimwa uye hazvisati zvichizotongoonekwazve.Nekudaro, nhasi mune dzimwe nzvimbo, DR Palmer mar ndiro ichatanga kukura zvakare muhuwandu husati hwamboitika mukati memazuva gumi.
Zvimwe zvezvakakosha zvechidzidzo ichi kutariswa kwemasora eDR mumagreenhouses paYunivhesiti yeTennessee neYunivhesiti yeArkansas.Chidzidzo ichi chinoratidza kuti kushivirira kwePalmer muriwo wakapukunyuka dicamba kubva muminda yakawanda muTennessee muna 2019 ndewePalmer muriwo wakarimwa kubva kumbeu yakatorwa kubva kuArkansas neTennessee makore gumi apfuura.Kupfuura ka2.Ongororo dzakazotevera dzegreenhouse dzakaitwa paTexas Tech University dzakaratidza kuti vanhu vakaunganidzwa kubva kuShelby County, Tennessee vaive neka 2.4 kushivirira dicamba kupfuura Parma a muLubbock, Texas (Mufananidzo 1).
Miedzo yakadzokororwa yemumunda yakaitwa pane vamwe vanofungidzirwa kuti vanhu vePalmer muTennessee.Mhedzisiro yeiyi miedzo yemumunda inoratidza zviratidziro mugreenhouse, zvichiratidza kuti iyo yakanyorwa 1x dicamba application rate (0.5 lb/A) inogona kupa 40-60% Palmer mar yemuriwo kutonga.Mune miedzo iyi, kushandiswa kwakatevera kwedicamba kwakangovandudza zvishoma kutonga (Mifananidzo 2, 3).
Chekupedzisira, varimi vazhinji vanotaura kuti vanofanirwa kupfapfaidza iwowo Palmer mar muriwo 3 kusvika ka4 kuti vadzore.Nehurombo, mishumo iyi inoratidza kuti greenhouse uye zvidzidzo zvemumunda zviri kuratidza izvo vamwe vanachipangamazano, vatengesi uye varimi muTennessee vanoona muminda.
Saka, inguva yekuvhunduka here?Aihwa.Zvisinei, yave nguva yekuongororazve magadzirirwo emasora.Ikozvino, kutonga kwemishonga yesora kwakakosha kupfuura nakare kose.Ichi ndicho chikonzero tinosimbisa kushandiswa kwemishonga yesora mukotoni, yakadai separaquat, glufosinate, Valor, diuron, metazox uye MSMA.
Kana isu tichitarisira ku2021, zvave kufanira kunyatso shandisa PRE spray residue paPalmer.Mukuwedzera, rusununguko runofanira kushandiswa pakarepo mushure mekushandisa dicamba kubvisa kupukunyuka.Chekupedzisira, zvidzidzo zvekutanga zvakaratidza kuti DR Palmer mar inozonyanya kupikisa 2,4-D.
Naizvozvo, izvi zvinoita kuti Liberty ive mushonga wesora wakakoshesesa muhurongwa hwekugadzirisa sora hwezvirimwa zveXtend neEnlist.
Dr. Larry Steckel inyanzvi yesora yekuwedzera paYunivhesiti yeTennessee.Ona nyaya dzese dzevanyori pano.