Allelopathic Effects of Common Ragweed (Ambrosia artemisifolia var. elatior) on the Germination and Seedling Growth of Crops and Weeds

Abstract

Competitive ability, allelopathy, made the common ragweed (Ambrosia artemisiifolia var. elatior) one of the most dangerous weeds in Korea. The aim of this research was to evaluate the role of common ragweed as test species under laboratory bioassay and glasshouse conditions. Inhibition effect of the leaf extract was higher than that of stem and root parts extracts on germination and seedling growth of weeds. The 5% concentration of leaf extract of common ragweed inhibited the germination rate of Echinochloa crus-galli, Digitaria sanguinalis and Cyperus microiria by 68.3, 74.6 and 87.3%, respectively, as compared to the control. Generally, increasing incorporation concentration inhibited seedling growth of weeds. Incorporation of 5% common ragweed residue significantly reduced the plant length of E. crus-galli, D. sanguinalis and C. microiria by 48, 63 and 68%, respectively, as compared to the control. Also, the values of dry weight were 72, 78 and 71%, respectively. Contrarily, the emergence rate of soybean and corn was not affected by the incorporation of 5% concentration of common ragweed residue. However, the dry weight was inhibited by 37 and 28%, respectively. These results suggest that common ragweed had the ability to control some weed species using toxic compounds like natural herbicide.

Allelopathic potential of segetal and ruderal invasive alien plants

“…Pisula and Meiners (2010a) and Csiszár et al (2012) reported the same effect in the treatment with water extract of giant goldenrod, but they also used only leaves for preparation of water extracts. Choi et al (2010) determined the inhibition of germination for 68.3%, 74.6% and 87.3% on different test-species in treatments with leaf extract of ragweed. Šćepanović et al (2007) confirmed the inhibitory effect of velvetleaf and jimsonweed extracts on germination of maize.…”

Common ragweed (Ambrosia artemisiifolia) dry matter allocation and partitioning under different nitrogen and density levels

“…2008). As a result of its early emergence, rapid growth during the juvenile phase, and possible allelopathic effect on neighboring species (Choi et al . 2010; Lehoczky et al .…”

Ambrosia artemisiifolia L.: Common ragweed

“…Zahvaljujući visokoj stopi klijavosti, brzom početnom porastu, visokoj stopi fotosinteze (C3 put) i alelopatskom delovanju na druge vrste u okruženju (Choi et al, 2010;Lehoczky et al, 2010), ambrozija se svrstava u visoko kompetitivne vrste sa velikim potencijalom za širenje (Brandes and Nitzsche, 2006). Njena konkurentska sposobnost zasnovana je na morfološkim osobinama, a pre svega visini, zatim masi pojedinih biljnih delova i rasporedu listova, odnosno distribuciji lisne površine i zavisi od stepena razvijenosti njenih pojedinih organa.…”