Topramezone niyambere yimyanya yatewe ibyatsi byakozwe na BASF kumirima y ibigori, ikaba ari 4-hydroxyphenylpyruvate oxydease (4-HPPD) inhibitor.Kuva yatangizwa mu 2011, izina ry'ibicuruzwa “Baowei” ryashyizwe ku rutonde mu Bushinwa, rikuraho inenge z'umutekano w’ibiti bisanzwe byangiza ibigori kandi bikurura inganda.
Inyungu igaragara cyane ya topramezone numutekano wacyo kubigori nibihingwa byakurikiyeho, kandi ikoreshwa cyane mubwoko bwose bwibigori nkibigori bisanzwe, ibigori bya glutinous, ibigori byiza, ibigori byo mu murima, na popcorn.Muri icyo gihe, ifite ibyatsi byinshi byica ibyatsi, ibikorwa byinshi, hamwe no kutamenya neza, kandi bigira ingaruka nziza zo kurwanya nyakatsi irwanya glyphosate, triazine, synthase ya acetyllactate (ALS), hamwe na inibitori ya acetyl CoA Carboxylase (ACCase).
Nk’uko raporo zibyerekana, mu myaka yashize, kubera ko urumamfu rwihanganira imirima y’ibigori rwarushijeho kugorana kugenzura, inyungu n’igenzura ry’itabi gakondo hamwe n’ibyatsi bya nitrate byagabanutse, kandi n’amasosiyete yica udukoko twangiza udukoko twita cyane kuri topramezone.Igihe ipatanti ya BASF irangiye mu Bushinwa (nimero ya patenti ZL98802797.6 ya topramezone yarangiye ku ya 8 Mutarama 2018), inzira y’ibiyobyabwenge by’umwimerere nayo iragenda itera imbere, kandi isoko ryayo rizakingurwa buhoro buhoro.
Muri 2014, igurishwa rya topramezone ku isi ryari miliyoni 85 z'amadolari y'Amerika, naho muri 2017, kugurisha ku isi kuzamuka kugera ku rwego rwo hejuru mu mateka agera kuri miliyoni 124 z'amadolari y'Abanyamerika, biza ku mwanya wa kane mu byangiza imiti yica HPPD (bitatu bya mbere ni nitrosulfuron, isoxacloprid, na cyclosulfuron).Byongeye kandi, amasosiyete nka Bayer na Syngenta yagiranye amasezerano yo gufatanya guteza imbere soya yihanganira HPPD, nayo yagize uruhare mu kuzamura ibicuruzwa bya topramezone.Urebye umubare w’ibicuruzwa ku isi, isoko nyamukuru yo kugurisha ya topramezone iri mu bihugu nka Amerika, Ubudage, Ubushinwa, Ubuhinde, Indoneziya, na Mexico.
Igihe cyo kohereza: Nzeri-25-2023