Njengoba isetshenziswa abantu abangaphezu kwezigidi eziyinkulungwane emhlabeni wonke, amazambane sekuyisikhathi eside engenye yezitshalo ezibaluleke kakhulu ekuvimbeleni indlala. Nokho, kwamanye amazwe asele ampofu emhlabeni, uxhaxha lwezithiyo luvimbela lokhu kudla okuyisisekelo ekuletheni uhla oluphelele lwezinzuzo zokulwa nendlala, ubumpofu kanye nokungondleki.
Izindleko eziphezulu zokungeniswa kwembewu kanye nezinhlelo zembewu ezingathuthukisiwe zenza amazambane angafinyeleleki kubalimi nakubathengi emazweni afana neSudan, Yemen, Madagascar, Eritrea kanye ne-Angola.
Okokuqala nje, abalingani bentuthuko kufanele babeke eqhulwini amasu akhulisa ukufinyeleleka kwezimbewu ezithengekayo, ezisezingeni eliphezulu emazweni angenakho ukudla.
Ukwenza ngcono izinhlelo zembewu yamazambane ukuze izinhlobo ezitholakala kalula zisatshalaliswe futhi zinikezwe abalimi abancane kuzovumela amazwe ukuthi akwazi ukuzimela ngokukhiqiza imbewu, futhi kungasiza ekuthuthukiseni umkhakha wamazambane osimeme futhi onenzuzo.
Ngenkathi isekela ukwamukelwa kwamazambane njengesitshalo esibalulekile sokusiza ukuthuthukisa ukuvikeleka kokudla, izinhlangano zentuthuko kufanele futhi zinikeze uqeqesho mayelana nemikhuba emihle ezifundeni lapho lokhu kungathuthukisiwe khona. Isivuno esiphezulu esinezinqubo ezisimeme zokuphatha umhlaba sibalulekile ekusekeleni izimakethe zamazambane ezikhulayo, ikakhulukazi emazweni afana neMadagascar neYemen, lapho abalimi bevame ukungakwazi ukufinyelela ukuqeqeshwa okudingekayo kanye nemikhuba emihle yezolimo.
Okokugcina, ososayensi bezolimo nabafuyi nabo badinga ukwesekwa ukuze bathuthukise futhi bakhuthaze izinhlobo zamazambane ezikwazi ukumelana nesimo sezulu.
Isibonelo, izinhlobonhlobo zamazambane ze-Unica, ezakhiwe ososayensi e-International Potato Centre (CIP), azigcini nje ukumelana namagciwane anganciphisa kakhulu isivuno, kodwa futhi nokucindezeleka okukhulu kwamanzi. Abalimi baseKenya bathole amathani angaba ngu-19 ehektheleni e-Unica enemvula yezinkathi zonyaka engu-118 mm, lapho ngokuvamile imvula engu-450-550 mm idingeka khona ukuze bathole lesi sivuno.
Ngaphezu kwalokho, ukuthuthukiswa kwezimakethe zamazambane kulezi zifunda kusho ukuthuthukiswa kwezinhlelo eziletha ukudla okuningi kubantu. Isibonelo, ukutshala amazambane emhlabathini phakathi kwezitshalo zelayisi kuvumela abalimi ukuthi bahlukanise ukukhiqiza futhi bakhulise umkhiqizo womhlaba.