Ukhula lunokumela umngeni omkhulu kubalimi. Zikhula ngokwenyani kwizityalo zakho, zifunxa izondlo kunye nokukhanya kwelanga ebekuya kuthi ngenye indlela ukuya koobuhle abaqwengayo beqokelela ingqolowa. Ukhula lukhula kakhulu ngenxa yokusasazeka ngokukhawuleza kwezityalo ekujoliswe kuzo ezingasempilweni kwaye zincinci kakhulu. Oku kusenokubangela ukuba abalimi bafumane isivuno esinciphileyo - ukutya abanokuthengisa. Ukucombulula lo mba, amafama asebenzisa iindlela ezahlukeneyo zokulawula ukhula nokulunqanda ekulawuleni amasimi abo. Kukho iindlela ezahlukeneyo zokuphelisa ezo zinambuzane, kodwa enye yeendlela ezithandwayo akhethwa ngamafama amaninzi kukusebenzisa uhlobo oluthile lwekhemikhali eyaziwa ngokuba yimichiza yokutshabalalisa ukhula.
Amafama atshiza ngaphezulu kwe-11 lezigidi zeeponti ze-acetochlor, umchiza wokutshabalalisa ukhula oqhelekileyo. Batshiza le khemikhali emasimini apho zikhula khona izityalo zabo. Ngokubulala ukhula olukhuphisana nezityalo, i-acetochlor iyaluphelisa ukhuphiswano. Ithintela ukukhula kokhula nto leyo evumela ukukhula okungcono kwesityalo ngaphandle kokuba nokhula lusibekele. Abalimi baya kuba nesityalo esisempilweni kwaye ukutya okuninzi kunokuveliswa.
Imichiza yokutshabalalisa ukhula iAcetochlor iluncedo kakhulu kumafama njengoko isenza umsebenzi wabo ube lula. Oku kongela abalimi ixesha namandla ebebeya kuwachitha benyamekela ukhula. Amafama amandulo ancothula ukhula ngesandla esebenzisa izixhobo ezifana namagaba nemihlakulo phambi kokusetyenziswa kwemichiza yokutshabalalisa ukhula. Yayingumsebenzi onzima nodinisayo, uthabatha iiyure. Yayilixesha apho abalimi babesebenza iiyure ngeeyure phantsi kwelanga eligqats’ ubhobhoyi, bezama ukugcina ukhula emasimini abo.
Imichiza yokutshabalalisa ukhula efana ne-acetochlor yenze ukuba kube lula kumafama ukulawula ingxaki yokhula emasimini abo. Ngale nto, banokutshiza umchiza wokutshabalalisa ukhula emasimini akho baze baqhubeke neminye imisebenzi ebalulekileyo efama. Bangasebenzisa le yure yongezelelweyo ukutyala, ukunkcenkceshela okanye ukukhathalela izityalo zabo. Ngaphandle koko, imichiza yokutshabalalisa ukhula yenza ukuba izityalo zikhule ngcono kwaye ke ngoko zinokunika abalimi ukutya okuninzi abanokuthengisa kwiimarike. Oku kubaluleke kakhulu kwiinkampani zabo.
Kuyinyani ukuba le acetochlor imangalisayo inceda amafama kakhulu, kodwa kwangaxeshanye ibangela iingxaki zokusingqongileyo kunye nempilo yabantu. Kwizinto ezininzi ezixhalabisayo, enye yezona zinto zibalulekileyo yindlela, ewuchaphazela ngayo umoya nomhlaba kunye namanzi asingqongileyo. Nangona kunjalo, obu butyebi bendalo buthanda ukosulelwa yimichiza yokutshabalalisa ukhula ngokunjalo. Njengaxa iimeko zokubulala ukhula zikhukuliseka ziye emilanjeni nakwimisinga ngexesha lemvula. Oku kuyingozi kwiintlanzi nakwezinye izilwanyana zasemanzini, kwaye kusongela umhlaba oza kulima izityalo kuwo kwixesha elizayo. Kwaye ukuba ezi khemikhali zixubana emoyeni, zinokubeka impilo yabantu emngciphekweni.
Kwiisizini ezimbalwa ezidlulileyo, uninzi lolwazi olutsha kunye nolonwabisayo luye lwavela malunga glyphosate herbicide sebenzisa. Ngoku, iinkampani ezifana neCIE Chemical zenza iinzame zokuzinikela ekudaleni imichiza yokutshabalalisa ukhula ephuculweyo, ekhuselekileyo ukuze amafama ayisebenzise. Basebenzisa izixhobo zokukhangela ezinye izisombululo ezinokwenza iimveliso zabo zisebenze ngakumbi. Kwakhona, iitekhnoloji ezintsha ezinciphisa iziphumo ezibi zemichiza yokutshabalalisa ukhula kwindalo esingqongileyo kunye nempilo yabantu nazo ziyaphuhliswa.
Ngaphandle kwezi nzame nangona kunjalo, abalimi basasokola ngemiba ethile. Eyona nto ixhalabisayo kukuba olunye ukhula luyakwazi ukuxhathisa imichiza yokutshabalalisa ukhula ngokuhamba kweminyaka kwaye alubulawa lula. Oku kuthetha ukuba abalimi banokuba “nokhula olukhulu” oluxhathisayo ekunokuba nzima kakhulu ukululawula. Abalimi kufuneka balawule le meko ngokusebenzisa iindlela ezahlukeneyo zokulawula ukhula. Ukhetho olunjalo lweentlobo ngeentlobo lunokuquka ukulima iintlobo ezahlukeneyo zezityalo okanye iimpawu ezikwaziyo ukunyamezela imichiza yokutshabalalisa ukhula kunye nezinganyamezeliyo imichiza ngokunjalo.
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