[Weed-suppressive effect of phenolic acids].
Allelochemical substitutions salicylic acid, p-hydroxybenzonic acid, cinnamic acid, vanillic acid and ferulic acid were tested in a gyrating regression experiment to study the weed-suppressive effect of phenolic acids on the root growth of barnyardgrass. The results showed that cinnamic acid had a significant inhibitory effect, its square item regression coefficient being -6.18; salicylic acid, p-hydroxybenzonic acid and ferulic acid had the same trend of weed-suppressive potential as cinnamic acid, while vanillic acid had a different weed-suppressive effect from the others. The inhibition rate (IR) on the root growth of barnyardgrass reached its highest level (78.5%) when 0.06 mmol x L(-1) salicylic acid, 0.60 mmol x L(-1) p-hydrobenzonic acid, 0.24 mmol x L(-1) cinnamic acid, 0.02 mmol x L(-1) vannillic acid and 0.02 mmol x L(-1) ferullic acid were mixed together to apply.
He
Huaqin
H
Key Laboratory of Pesticide and Chemical Biology, Ministry of Education, College of Life Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. hehuaqin@pub2.fz.fj.cn
Liang
Yiyuan
Y
Jia
Xiaoli
X
Song
Biqing
B
Guo
Yuchun
Y
Liang
Kangjing
K
Lin
Wenxiong
W
D002934:Cinnamates / Q000494:pharmacology; D006540:Herbicides / Q000494:pharmacology*; D062385:Hydroxybenzoates / Q000494:pharmacology*; D012275:Oryza / Q000737:chemistry / Q000254:growth & development; D010675:Pheromones / Q000737:chemistry*; D012459:Salicylates / Q000494:pharmacology*
D002934:Cinnamates; D006540:Herbicides; D062385:Hydroxybenzoates; D010675:Pheromones; D012459:Salicylates; C029010:cinnamic acid; C017616:phenolic acid