TITLE:
Allelopathic Effects of Water Extracts of Sweet Potato (Ipomoea batatas) on Seed Germination of Ageratum conyzoides
AUTHORS:
Shuangshuang Zhang, Wenlei Cheng, Ye Chen, Mingxing Jiang, Genshen Yin
KEYWORDS:
Sweet Potato, geratum conyzoides, Water Extracts, Allelopathic Effect
JOURNAL NAME:
Journal of Agricultural Chemistry and Environment,
Vol.12 No.2,
May
12,
2023
ABSTRACT: Sustainable weed management strategies are essential to reduce chemical and labor inputs. This study aimed to evaluate the effect of water extracts from sweet potato [Ipomoea batatas (L.) Lamarck] on seed germination of Ageratum conyzoides L. under controlled conditions. The aqueous was produced from plant parts i.e., roots, stems, and leaves of sweet potato at concentrations of 0.025, 0.050, 0.075, and 0.100 g·mL-1. The results showed that the plant parts of sweet potato all contained allelopathic substances, which showed high-concentration inhibition and low-concentration promotion of seed germination of A. conyzoides. When the aqueous extract concentrations were 0.050, 0.075, and 0.100 g·mL-1, the germination of A. conyzoides seeds was inhibited, while the germination was promoted at a concentration of 0.025 g·mL-1. This shows that when the planting density of sweet potato is large, it can form an obvious prevention and control effect on A. conyzoides, and thus improve herbicide resistance management.