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This is to certify that your paper entitled «Effect of Solar Ultraviolet-B plus End of Day Light and Its Exclusion on Growth Performance and Dry Weight Accumulation of Two Sweet Potato Cultivars (Ipomoea batatas L.) on Different Altitudes» was indexed with 11 pages, in the CIVILICA citation database, code COI:JR_IJHST-7-1_001, after evaluation and approval of the referees of the "International Journal of Horticultural Science and Technology Vol 7, Issue 1 , Year 2020.

While offering our congratulations on the indexation of your paper, please be informed that this certificate is prepared based on the information submitted by the secretariat of the above journal and the information contained in the CIVILICA database, and the accuracy of its content can be inquired at any time through link provided at the bottom of the page or scanning the code image.