Extensive testing of LAMP (Loop Mediated Isothermal Amplification) has shown a high sensitivity and specificity in detecting sweet potato feathery mottle virus (SPFMV), sweet potato chlorotic stunt virus (SPCSV), and begomoviruses comparable to using quantitative polymerase chain reaction (RT-QPCR). On-site detection of SPFMV, SPCSV, and begomoviruses was simple to perform in different geographical regions. LAMP assay has potential as a rapid diagnostic tool for SPFMV, SPCSV, and begomoviruses. At a current cost of $6.5 per assay, we anticipate the tool when used with bulked samples, which will be highly cost-competitive compared to biological, serological and molecular techniques.