Khothi la ku Brazil lalamula kuti mankhwala ophera tizilombo a 2,4-D aletsedwe m'madera ofunikira a vinyo ndi maapulo kum'mwera.

Khoti kum'mwera kwa Brazil posachedwapa lalamula kuti 2,4-D, imodzi mwa zomwe zimagwiritsidwa ntchito kwambiri, iletsedwe nthawi yomweyo.mankhwala ophera udzupadziko lonse lapansi, m'chigawo cha Campanha Gaucha kum'mwera kwa dzikolo. Chigawochi ndi malo ofunikira kwambiri opangira vinyo wabwino ndi maapulo ku Brazil.

Chigamulochi chinaperekedwa kumayambiriro kwa Seputembala poyankha mlandu wa anthu wamba womwe bungwe la alimi la m'deralo linapereka. Bungwe la alimi linati mankhwalawo anawononga minda ya mpesa ndi minda ya maapulo chifukwa cha kufalikira kwa mankhwala. Malinga ndi chigamulochi, 2,4-D siyenera kugwiritsidwa ntchito kulikonse m'dera la Campanha Gaucha. M'madera ena a Rio Grande do Sul, n'koletsedwa kupopera mankhwala ophera tizilombo awa mkati mwa mamita 50 kuchokera ku minda ya mpesa ndi minda ya maapulo. Chiletsochi chidzakhalabe chogwira ntchito mpaka boma la boma litakhazikitsa njira yonse yowunikira komanso yokakamiza malamulo, kuphatikizapo kukhazikitsa madera osagwiritsidwa ntchito m'madera omwe ali pachiwopsezo chachikulu.

Akuluakulu a boma adapatsidwa masiku 120 kuti agwiritse ntchito njira yatsopanoyi. Kulephera kutsatira malamulowa kudzapangitsa kuti pakhale chindapusa cha 10,000 reais (pafupifupi madola 2,000 aku US), chomwe chidzasamutsidwira ku thumba la ndalama zolipirira zachilengedwe la boma. Chigamulochi chikufunanso kuti boma lifalitse chiletsochi kwa alimi, ogulitsa mankhwala a agrochemical komanso anthu onse.

2,4-D (2, 4-dichlorophenoxyacetic acid) yakhala ikugwiritsidwa ntchito kwambiri kuyambira m'ma 1940, makamaka m'minda ya soya, tirigu ndi chimanga. Komabe, kusinthasintha kwake komanso chizolowezi chake chopita kumadera apafupi kwapangitsa kuti ikhale chinthu chachikulu pakati pa alimi a tirigu ndi opanga zipatso kum'mwera kwa Brazil. Minda ya mpesa ndi minda ya maapulo imakhudzidwa kwambiri ndi mankhwala awa. Ngakhale kusuntha pang'ono kungakhudze kwambiri mtundu wa zipatso, zomwe zimabweretsa mavuto azachuma kumakampani ogulitsa vinyo ndi zipatso. Alimi amakhulupirira kuti popanda kuyang'aniridwa mokhwima, zokolola zonse zidzakhala pachiwopsezo.

Ino si nthawi yoyamba kuti Rio Grande do Sul ikangane pa 2,4-D. Akuluakulu am'deralo adayimitsa kale kugwiritsa ntchito mankhwala ophera udzu, koma iyi ndi imodzi mwa malamulo okhwima kwambiri omwe akugwiritsidwa ntchito ku Brazil mpaka pano. Akatswiri a zaulimi amati mlanduwu ukhoza kukhala chitsanzo cha malamulo okhwima ophera udzu m'maiko ena aku Brazil, kuwonetsa kusamvana pakati pa mitundu yosiyanasiyana yaulimi: kulima tirigu wambiri ndi mafakitale a zipatso ndi vinyo omwe amadalira mtundu wa zinthu komanso chitetezo cha chilengedwe.

Ngakhale kuti chigamulochi chikhoza kupidwabe, lamulo la 2,4-D lidzakhalabe logwira ntchito mpaka Khoti Lalikulu litapanga zisankho zina.