Isoxaflutole HPPD inhibitor inhibitor poletsa udzu
Mafotokozedwe Akatundu
Isoxaflutole ndi systemic herbicide - imasamutsidwa muzomera potsatira kuyamwa kudzera mumizu ndi masamba ndipo imasinthidwa mwachangu kukhala diketonitrile yogwira biologically, yomwe imachotsedwa ku metabolite yosagwira ntchito, 2-methylsulphonyl-4-trifluoromethylbenzoic acid.Ntchito ya mankhwalawa ndi kudzera mu kuletsa kwa enzyme p-hydroxy phenyl pyruvate dioxygenase (HPPD), yomwe imasintha p-hydroxy phenyl pyruvate kukhala homogentisate, sitepe yofunika kwambiri mu plastoquinone biosynthesis.Isoxaflutole imateteza udzu wambiri ndi udzu wambiri poyeretsa udzu kapena udzu wophukira potsatira kumera kwa mankhwala ophera udzu kudzera mumizu.Kutsatira kutengera kwa foliar kapena mizu, isoxaflutole imasinthidwa mwachangu kukhala chotengera cha diketonitrile (2-cyclopropyl-3-(2-mesyl-4-trifluoromethylphenyl) -3-oxopropanenitrile) potsegula mphete ya isoxazole.
Isoxaflutole ingagwiritsidwe ntchito isanameke, isanayambe kubzala kapena kubzala isanayambe kuphatikizidwa mu chimanga ndi kumera kapena kumera msanga mu nzimbe.Kukwera kwakukulu kumafunikira pakugwiritsa ntchito mbewu musanabzale.M'mayesero am'munda, isoxaflutole idapereka milingo yofananira pamankhwala wamba a herbicide koma pamitengo yotsika pafupifupi nthawi 50.Imaletsa namsongole wosamva triazine ikagwiritsidwa ntchito yokha komanso yosakaniza.Kampaniyo imalimbikitsa kuti igwiritsidwe ntchito mosakaniza, komanso mozungulira kapena motsatizana ndi mankhwala ena ophera udzu kuti achedwetse kuyambika kwa kukana.
Isoxaflutole, yomwe imakhala ndi theka la moyo wa maola 12 mpaka masiku atatu, kutengera mtundu wa dothi ndi zinthu zina, imasinthanso kukhala diketonitrile m'nthaka.Isoxaflutole imasungidwa pamwamba pa dothi, kulola kuti itengedwe ndi njere zaudzu zomwe zamera pamwamba, pomwe diketonitrile, yomwe imakhala ndi theka la moyo wa masiku 20 mpaka 30, imalowa m'nthaka ndikutengedwa ndi mizu ya zomera.Muzomera zonse komanso m'nthaka, diketonitrile imasinthidwa kukhala benzoic acid ya herbicidally inactive.
Izi siziyenera kupakidwa ku dothi lamchenga kapena lotayirira kapena dothi lokhala ndi zinthu zosachepera 2%.Pofuna kuthana ndi kawopsedwe ka nsomba, zomera za m'madzi ndi zamoyo zopanda msana, malo otchinga mamita 22 akufunika kuteteza malo ovuta, monga madambo, maiwe, nyanja ndi mitsinje.
