Topramezone ndiyo mushonga wekutanga wekuuraya zvipembenene mushure mekuchekwa kwembeu neBASF weminda yechibage, unova mushonga unodzivirira zvipembenene une 4-hydroxyphenylpyruvate oxidase (4-HPPD). Kubva pawakatanga muna 2011, zita rechigadzirwa "Baowei" rave riri kunyorwa muChina, zvichikanganisa kuchengetedzeka kwemishonga yekuuraya zvipembenene yeminda yechibage uye zvichikwezva kutariswa kweindasitiri.
Chinhu chinonyanya kukosha che topramezone ndechekuti yakachengeteka pachibage nezvirimwa zvinotevera, uye inoshandiswa zvakanyanya mumhando dzese dzechibage dzakadai sechibage chenguva dzose, chibage chine mafuta akawanda, chibage chinotapira, chibage chemunda, uye popcorn. Panguva imwe chete, ine huwandu hwakakura hwemishonga inouraya zvipembenene, inoshanda zvakanyanya, uye inogona kusanganiswa zvakanyanya, uye ine simba rakanaka rekudzora masora asingarwisi glyphosate, triazine, acetyllactate synthase (ALS) inhibitors, uye acetyl CoA carboxylase (ACCase) inhibitors.
Sekureva kwemishumo, mumakore achangopfuura, sezvo sora rinodzivirira muminda yechibage rave kuoma kudzora, purofiti uye kushanda zvakanaka kwemishonga yefodya nenitrate yetsika kwaderera, uye makambani emishonga yekuuraya zvipembenene emumba akanyanya kutarisisa topramezone. Nekupera kweBASF's patent muChina (nhamba yepatenti ZL98802797.6 yetopramezone yakapera musi wa8 Ndira, 2018), maitiro ekushandisa mushonga wekutanga ari kufambira mberiwo zvishoma nezvishoma, uye musika wawo uchavhurwa zvishoma nezvishoma.
Muna 2014, kutengeswa kwetopramezone pasi rose kwaive mamiriyoni makumi masere nemashanu emadhora ekuAmerica, uye muna 2017, kutengeswa kwepasi rose kwakakwira kusvika pamadhora zana nemakumi maviri nemana emamiriyoni ekuAmerica, zvichiva pechina pakati pemishonga yeHPPD inhibitor herbicides (mitatu yepamusoro iri nitrosulfuron, isoxacloprid, uye cyclosulfuron). Pamusoro pezvo, makambani akadai seBayer neSyngenta asvika pachibvumirano chekugadzira pamwe chete soya dzinoshivirira HPPD, izvo zvakabatsirawo mukukura kwekutengeswa kwetopramezone. Kubva pamaonero ehuwandu hwekutengesa pasi rose, misika mikuru yekutengesa yetopramezone iri munyika dzakadai seUnited States, Germany, China, India, Indonesia, neMexico.
Nguva yekutumira: Gunyana-25-2023