“Methylphenyldichlorosilane;MPDCS; Phenylmethyldichlorosilane;PMDCS” (CAS#149-74-6)
Intshayelelo kwiiNdibaniselwano eziPhambili149-74-6
Ikhompawundi ene-ID149-74-6ibizwa ngokuba yi-2,4-dichlorobenzoic acid (2,4-D), isitshabalalisi esisetyenziswa ngokubanzi esidlala indima ebalulekileyo kwimisebenzi yezolimo. Le khompawundi isebenza ngokukodwa ekulawuleni ukhula olunamagqabi abanzi, iyenza ibe yeyona nto iphambili kukutya kwezityalo ezahlukeneyo, ingca kunye nezitiya.
I-2,4-D yaziswa okokuqala ngoo-1940 kwaye ukusukela ngoko yaba yenye yezona zibulala ukhula zisetyenziswa kakhulu ehlabathini. Ukusebenza kwayo kuhambelana nokukwazi ukulinganisa iihomoni zezityalo zendalo, ezinokubangela ukukhula okungalawulwayo kokhula olujoliswe kuyo kwaye ekugqibeleni lukhokelela ekufeni kwabo. Oku kukhetha kwenza amafama agcine izivuno zezityalo kwaye alawule ngokufanelekileyo inani lokhula.
Ukuqaliswa kwe-2,4-D kumsebenzi wezolimo kutshintsha ngokusisiseko ukutshatyalaliswa kokhula, kunika amafama isixhobo esithembekileyo sokunyusa isivuno kunye nokunciphisa ukhuphiswano ngezixhobo. Nangona kunjalo, ukusetyenziswa kwalo mchiza wokutshabalalisa ukhula akunakuphikiswa. Ukuqwalaselwa kwempembelelo yokusingqongileyo, iingozi zempilo ezinokuthi zibe kho, kunye nophuhliso lweentlobo zokhula ezikwaziyo ukumelana nemichiza kubangele uphando oluqhubekayo kunye nokuphononongwa ngokusemthethweni.
Kwiminyaka yakutshanje, ishishini lezolimo liphanda izicwangciso zokulawula ukhula ezibanzi ezidibanisa ukusetyenziswa kwe-2,4-D kunye nezinye iindlela zokulawula ukunciphisa ezi nkxalabo. Le ndlela ijolise ekunciphiseni ukuxhomekeka kwimichiza yokutshabalalisa ukhula ngelixa kugcinwe ukutshatyalaliswa kokhula okusebenzayo.
Ngamafutshane, i-149-74-6 okanye i-2,4-dichlorobenzoic acid yi-herbicide ebalulekileyo kwezolimo zanamhlanje. Ukuphunyezwa kwayo kube nempembelelo ebalulekileyo kwiindlela zokutshabalalisa ukhula, nangona iye yaphakamisa imiba ebalulekileyo malunga nokuzinza nokhuseleko. Njengoko uphando luqhubeka, i-2,4-D inokubandakanya ulungelelwaniso phakathi kokutshatyalaliswa kokhula okusebenzayo kunye nolawulo lokusingqongileyo kwixesha elizayo.
