I-Isoxaflutole HPPD inhibitor inhibitor yokulawula ukhula

Incazelo yomkhiqizo

I-Isoxaflutole iyi-systemic herbicide - ithuthwa kuso sonke isitshalo kulandela ukumuncwa ngezimpande namahlamvu bese iguqulwa ngokushesha ibe yi-planta ibe yi-biologically active diketonitrile, bese ikhishwa ibe yi-metabolite engasebenzi, i-2-methylsulphonyl-4-trifluoromethylbenzoic acid.Umsebenzi womkhiqizo ungokuvimbela i-enzyme i-p-hydroxy phenyl pyruvate dioxygenase (HPPD), eguqula i-p-hydroxy phenyl pyruvate ibe i-homogentisate, isinyathelo esibalulekile ku-plastoquinone biosynthesis.I-Isoxaflutole ilawula inqwaba yotshani kanye nokhula olunamaqabunga abanzi ngokuxubha ukhula olusakhulayo noma olusahlumayo kulandela ukumuncwa kwe-herbicide ngokusebenzisa uhlelo lwezimpande.Ngemva kokuthatha i-foliar noma impande, i-isoxaflutole iguqulwa ngokushesha ibe kokuphuma kwe-diketonitrile (2-cyclopropyl-3-(2-mesyl-4-trifluoromethylphenyl) -3-oxopropanenitrile) ngokuvula indandatho ye-isoxazole.

I-Isoxaflutole ingasetshenziswa ngaphambi kokuhluma, ukutshala ngaphambi kokutshala noma ukutshalwa kwangaphambili okuhlanganiswe nommbila nangaphambi kokuhluma noma ukuhluma kwangaphambi kokuhluma kumoba.Izinga eliphezulu liyadingeka ekufakweni kwangaphambi kokutshala.Ezivivinyweni zasensimini, i-isoxaflutole inikeze amazinga afanayo okulawula ekwelashweni okujwayelekile kokubulala ukhula kodwa ezilinganisweni zokusetshenziswa cishe izikhathi ezingama-50 eziphansi.Ilawula ukhula olumelana ne-triazine kokubili uma lusetshenziswa lodwa nasezingxubeni.Inkampani incoma ukuthi isetshenziswe ezixubeni, futhi ngokushintshana noma ukulandelana neminye imithi yokubulala ukhula ukubambezeleka ukuqala kokungazweli.

I-Isoxaflutole, enesigamu sempilo yamahora angu-12 kuya ezinsukwini ezingu-3, ​​kuye ngohlobo lwenhlabathi nezinye izici, iphinde iguqule ibe yi-diketonitrile emhlabathini.I-Isoxaflutole igcinwa phezu komhlabathi, ivumela ukuthi ithathwe yimbewu yokhula emila phezulu, kuyilapho i-diketonitrile, enesigamu sempilo yezinsuku ezingama-20 kuya kwezingu-30, ingena emhlabathini futhi ithathwe yizimpande zezitshalo.Kuzo zombili izitshalo nasemhlabeni, i-diketonitrile iguqulwa ibe i-benzoic acid engasasebenzi.

Lo mkhiqizo akumele ufakwe enhlabathini enesihlabathi noma evundile noma enhlabathini enezinto eziphilayo ezingaphansi kuka-2%.Ukuze kuliwe nobuthi obungaba khona ezinhlanzini, ezitshalweni zasemanzini nasezilwanyaneni ezingenamgogodla, kudingeka indawo evikelekile engamamitha angama-22 ukuze kuvikelwe izindawo ezibucayi, njengamaxhaphozi, amachibi, amachibi nemifula.