The herbicidal potential of nine phenolic acids including p-hydroxybenzoic acid, protocatechuic, syringic, vanillic, gallic, salicylic, ferulic, p-coumaric and caffeic acid were evaluated against Corchorus olitorius and Phalaris minor weeds at the concentrations of 5, 10 and 20 mM. The effectiveness of phenolic acids on germination depended on target seed, specific phenolic acid and concentration. The inhibitory effects varied between the two tested seeds, and P. minor was the more sensitive. With few exceptions, phenolic acids at all tested doses did not inhibit seed germination of C. olitorius, but the acids caused great inhibition effects on germination of P. minor. Salicylic acid nearly had a complete inhibition effect on germination of tested seeds when used at 20 mM. P-hydroxybenzoic, protocatechuic, salicylic, vanillic and ferulic acids appeared great inhibition effects on germination of P. minor and nearly had complete inhibition effects when used at high dose. In a greenhouse trial, we found that application of phenolic acids at 5–20 mM did not produce any significant effect on growth on 5‑weeks-old C. olitorius or P. minor plants, after seven days from treatments. The study concluded that phenolic acids had diverse activities on germination and growth of C. olitorius or P. minor weeds.

中文翻译：

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大剂量酚酸对控制桔梗和Ph草次杂草的适宜性

九个酚酸包括除草电位p -羟基苯甲酸，原儿茶酸，丁香醛，香草，没食子酸，水杨酸，阿魏酸，p香豆和咖啡酸对进行评价长蒴黄麻和虉次要在5，10和20mM浓度的杂草。酚酸对发芽的有效性取决于目标种子，特定酚酸和浓度。两种被测种子和P的抑制作用各不相同。 未成年人则更为敏感。除少数例外，所有测试剂量的酚酸均不抑制低聚梭菌的种子萌发，但是酸对P的萌发有很大的抑制作用。 小的。当以20 mM使用时，水杨酸几乎完全抑制了受试种子的发芽。对羟基苯甲酸，原儿茶酸，水杨酸，香草酸和阿魏酸对P的萌发表现出极大的抑制作用。 少量使用时几乎没有完全抑制作用。在温室试验中，我们发现以5-20 mM施用酚酸不会对5周龄C的生长产生任何显着影响。 蒴黄麻或P。 次要处理后的7天后种植。研究得出结论，酚酸对C的萌发和生长具有多种活性。 蒴黄麻或P。 小杂草。