Effects of Foliar Application of Uniconazole on the Storage Quality of Tuberous Roots in Sweetpotato

Uniconazole (UCZ), as a plant growth regulator, has been extensively applied in sweetpotato (Ipomoea batatas (L.) Lam) to increase tuberous root yield and quality. It is usually used the production of by foliar spray. The post-harvest storage stage crucial for forming quality sweetpotato’s root. Few studies have focused on spraying UCZ-affected during pro-harvest storage. To examine effects application UCZ root, this study mainly analyzed influence quality, with (K2 K4) without (K1 K3) 100 mg·L−1 UCZ, at period normal fertilizing treatments K2) rich (K3 K4), three representative varieties (Z13, Z33 J26). Compared no-use treatments, decay rate K2 was lowest any time. all 0.0% before 45 DAS. Only increased 4.4% 60 DAS (p < 0.05). dry matter K4 still higher than that K1 15–60 Z13 J26 treatment 30–60 In Z33, springiness no 45–60 These results indicate had effect decreasing sharply, it sometimes kept stable.