Ko Topramezone te patu taru tuatahi i muri i te whakatipu i whakawhanakehia e BASF mō ngā māra kānga, he aukati 4-hydroxyphenylpyruvate oxidase (4-HPPD). Mai i tōna whakarewatanga i te tau 2011, kua whakarārangihia te ingoa hua "Baowei" ki Haina, e pakaru ana i ngā hapa haumaru o ngā patu taru māra kānga tuku iho, ā, e kukume ana i te aro o te ahumahi.
Ko te painga nui o te topramezone ko tōna haumaru mō te kānga me ngā hua o muri mai, ā, e whakamahia whānuitia ana i roto i te nuinga o ngā momo kānga pēnei i te kānga noa, te kānga piri, te kānga reka, te kānga mara, me te pōporo. I taua wā anō, he whānui te whānuitanga o ngā patu taru, he nui te mahi, he kaha te whakauru, ā, he pai ngā pānga whakahaere ki ngā taru e ātete ana ki te glyphosate, te triazine, ngā aukati acetyllactate synthase (ALS), me ngā aukati acetyl CoA carboxylase (ACCase).
E ai ki ngā pūrongo, i ngā tau tata nei, i te mea kua uaua haere te whakahaere i ngā taru ātete i roto i ngā māra kānga, kua heke te hua me te whai huatanga o ngā patu taru tupeka me te nitrate tuku iho, ā, kua nui haere te aro o ngā kamupene patu taru ā-rohe ki te topramezone. I te paunga o te mana patene a BASF i Haina (i pau te nama patene ZL98802797.6 mō te topramezone i te 8 o Hānuere, 2018), kei te haere tonu te tukanga kimi i te rongoā taketake, ā, ka puare haere tōna mākete.
I te tau 2014, ko te hokonga o te topramezone i te ao ko te 85 miriona tāra US, ā, i te tau 2017, i piki ake ngā hokonga o te ao ki te taumata teitei o te hītori o te 124 miriona tāra US, ko te tuawhā o ngā patu taru HPPD (ko ngā mea nui e toru ko te nitrosulfuron, te isoxacloprid, me te cyclosulfuron). Hei tāpiri, kua tae ngā kamupene pēnei i a Bayer me Syngenta ki tētahi whakaaetanga ki te whakawhanake tahi i ngā pīni soya e manawanui ana ki te HPPD, ā, kua whai wāhi hoki tēnei ki te tipu o ngā hokonga o te topramezone. Mai i te tirohanga o te rahinga hokonga o te ao, ko ngā mākete hoko matua o te topramezone kei ngā whenua pēnei i te United States, Tiamana, Haina, Īnia, Initonīhia, me Mehiko.
Wā tuku: Hepetema-25-2023