Figure 1

Response of sweetpotato storage root yield of two cultivars (XS22 and SS19) to different N treatments. Different letters indicate statistical difference (P < 0.05) among the N treatments in each cultivar.

Response of sweetpotato storage root yield of two cultivars (XS22 and SS19) to different N treatments. Different letters indicate statistical difference (P < 0.05) among the N treatments in each cultivar.