Somaye Amini; Majid Azizi; Mohammad Reza Joharchi; Farid Moradinezhad
Abstract
This experiment was conducted in Ferdowsi University of Mashhad, in 2011 to investigate the allelopathic potential of 68 medicinal and wild plant species belong to 19 plant families grown in Iran. Results showed that among examined plants, stigma and style of Crocus sativus,leaves of Artemisia kopetdaghensis, ...
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This experiment was conducted in Ferdowsi University of Mashhad, in 2011 to investigate the allelopathic potential of 68 medicinal and wild plant species belong to 19 plant families grown in Iran. Results showed that among examined plants, stigma and style of Crocus sativus,leaves of Artemisia kopetdaghensis, Mentha piperita, Zhumeria majdae, Frulago subvelutina, flowers bud of Eugenia caryophyllata, flower of Perovskia abrotanoides, fruits of Melia azedarach and Ruta graveolenhad the strongest inhibitory effects on lettuce seedling growth. Interestingly by using of very low amount of plant samples (10 mg)growth inhibitory effects of these plants were observed by more than 70%. Additionally, the leaf of Atriplex canescens and the flower of Achillea millefolium had the strongest inhibitory effect on radicle growth (more than 75%) compare to the growth of hypocotyl (less than 20%). Here we can suggest that plants with inhibitory effects on growth and development of other plants have the potential to be applied as biological herbicides; this finding can be highlighted as new sustainable herbicides for biological control of weeds.
Mohammad Akbari; Noorali Sajedi; Masoud Gomarian; Mohsen Akbari
Abstract
In order to determine aqueous extract effects of cool-season turfgrass mixture clipping on germination and seedling growth of four weed species, laboratory and outdoor pot experiments were done at the experimental laboratory and greenhouse of the Doroud Parks and Landscape Organization, located in Doroud, ...
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In order to determine aqueous extract effects of cool-season turfgrass mixture clipping on germination and seedling growth of four weed species, laboratory and outdoor pot experiments were done at the experimental laboratory and greenhouse of the Doroud Parks and Landscape Organization, located in Doroud, Lorestan, Iran. The first factor was the concentration of sport turfgrass clipping extract (5, 10, 15, 20, 25% and 10, 25, 50, 75% (w/v) at laboratory and outdoor pot experiments, respectively) and the second factor was the type of weeds [dandelion (Taraxacum officinale), plantain (Plantago major), prostrate pigweed (Amaranthus blitoides) and common bermudagrass (Cynodon dactylon)]. A. blitoides was the most sensitive in both experiments. In both of the experiments, roots were more susceptible than shoots. For identifying phenolic acids, gas chromatography mass analysis displayed that this extract contained trans-cinnamic acid, 3,4,5-trimethoxybenzoic acid, syringic acid, p-coumaric acid, caffeic acid, gentisic acid, protocatechuic acid and ferulic acid. The results demonstrated that sport turfgrass clipping extracts have an inhibitory property on germination and initial seedling growth of noxious weed species and could be potentially used as preemergence bioherbicide.
