Tlhaloso ea Bo-ramahlale: Litapole ke sejalo sa bohlokoa lefatšeng ka bophara, empa li kotsing ea ho hlaseloa ke livaerase tse fapaneng tse ka bakang tahlehelo e kholo ea chai. Sengoliloeng sena se tla fana ka kakaretso ea livaerase tse amang litapole, phello ea tsona tlhahisong ea lijalo, le mekhoa ea ho laola le ho thibela ho ata ha tsona. Ke tataiso ea bohlokoa bakeng sa lihoai, litsebi tsa temo, lienjiniere tsa temo, beng ba mapolasi le bo-rasaense ba sebetsang temong. Litapole li hlaseloa habonolo ke livaerase tse 'maloa, ho kenyeletsoa sweet potato feathery mottle virus (SPFMV), sweet potato chlorotic stunt virus (SPCSV), le sweet potato mild mottle virus (SPMMV). Ho ea ka lintlha tsa morao-rao tse tsoang Setsing sa Machaba sa Litapole, likokoana-hloko tsena li ka baka tahlehelo ea lihlahisoa tse fihlang ho 80% haeba li sa laoloe hantle. Hangata li fetisoa ke likokoanyana, tse kang lintsintsi tse tšoeu le hoaba, hape li ka fetisoa ka lintho tse jalang tse nang le tšoaetso. Ho thibela ho ata ha livaerase tsena, ho bohlokoa ho sebelisa lisebelisoa tsa ho jala tse se nang mafu le ho sebelisa mehato e nepahetseng ea likhoerekhoere, joalo ka ho tlosa limela tse nang le tšoaetso le lisebelisoa tsa ho hloekisa lipakeng tsa tšebeliso. Lihoai le tsona li lokela ho sebelisa meriana e bolaeang likokoanyana ho laola bongata ba likokoanyana tse ka jalang livaerase. Mokhoa o mong oa ho laola livaerase tsa litapole ke ho sebelisa mefuta e hanyetsanang. Bo-rasaense ba hlahisitse mefuta ea litapole tse tsoelipanang le likokoana-hloko tse ling tse tloaelehileng, tse kang mofuta oa Beauregard, o hanyetsanang le SPCSV. Ho lema mefuta ena ho ka thusa ho fokotsa kotsi ea tšoaetso le ho fokotsa tahlehelo ea chai. Qetellong, livaerase ke tšokelo e kholo lijalong tsa litapole mme li ka baka tahlehelo e kholo ea moruo ho lihoai. Ho sebelisa lisebelisoa tsa ho jala tse se nang maloetse, ho sebelisa mekhoa e metle ea likhoerekhoere, le ho sebelisa meriana e bolaeang likokoanyana le mefuta e manganga ke mekhoa e sebetsang ea ho laola le ho thibela ho ata ha livaerase tsa litapole.