Ucwaningo olusha oluvela eNyuvesi yaseClarkson enyakatho neNew York lubheka ukuthi amagciwane angahamba kanjani esuka ezindaweni ezifaka umquba aye ekukhiqizeni phansi umoya. Ithimba labacwaningi, eliholwa ngu Shane Rogers, isekela likaprofesa wobunjiniyela bomphakathi nezemvelo, walinganisa ukuthi amagciwane avamile kangakanani—kuhlanganise I-Salmonella futhi E. coli— kungenzeka bahambe benomoya besuka ezindaweni zokufaka umquba.
"Inhloso yethu bekuwukuhlinzeka ngohlaka olunengqondo lokufunda le ndlela," kusho uRogers.
Ithimba lisebenzise idatha yasendle ukuze liqonde ukuthi la magciwane ahamba kanjani esuka ezindaweni zokufaka umquba ukuze akhiqize. Ucwaningo lwathatha iminyaka emithathu. Bathatha amasampula ebangeni elithile ezindaweni zokufaka umquba futhi bakala ubukhona bamagciwane abangela ukugula.
Abacwaningi basebenzisa amamodeli wekhompiyutha ukwandisa ukuqonda kwabo.
"Akunakwenzeka ukuthola izilinganiso zazo zonke izimo ezingaba khona," kusho uRogers. "Amamodeli asivumela ukuthi sibikezele ukungcola okungaphezu kwenani elikhulu lezimo ezingaba khona kunezilinganiso zethu ezingavuthiwe."
Lokhu kufaka phakathi uhlobo lomquba, indawo yepulazi, kanye nezimo zezulu ngesikhathi kufakwa umquba.
Ithimba liphinde lahlola ubungozi bokugula. Lokhu kwanikeza iqembu ukuqonda kangcono ukuthi maningi kangakanani amathuba okuthi umuntu agule ngenxa yomkhiqizo lapho inani elithile lamagciwane likhona.
Lihlanganisa yonke leyo datha, ithimba lathola ukuthi amasimu okukhiqiza kufanele abuyiselwe emuva ezindaweni okufakwe kuzo umquba okungenani ngamamitha ayi-160. Lelo banga kufanele lisize ekwehliseni ingcuphe yokugula okubangelwa ukudla ifinyelele emazingeni amukelekayo (1 kwabayi-10,000). URogers ukugcizelele ukuthi iseluleko esokuhlehla kancane.
"(amamitha angu-160) yibanga eliphansi okumele abalimi abakhiqizayo baligcine phakathi kwemisebenzi yokufaka umquba futhi bakhiqize izindawo ezikhulayo," kusho uRogers.
Ibanga elingeziwe nokubambezeleka phakathi kokufaka umquba nokuvuna kuzonikeza ukuvikeleka okwengeziwe.
The cwaningo ivela kuJournal of Environmental Quality. Le phrojekthi isekelwe yiNational Research Initiative Competitive Grant kanye ne-Agricultural Food and Research Initiative (AFRI) evela kwa Isikhungo Sikazwelonke Sokudla Nezolimo (i-NIFA) Uhlelo Lwekhwalithi Yomoya.