Results Pot Experiment Dining table 1 gives a synopsis of the results of the pot experiment. The aboveground biomass of knotweed showed many significant variations between CTEP the substrates in 2006 and 2007. The greatest biomass was produced in plants developed on compost in both years. There was also a huge difference observed between crops grown on clay and clayCS in 2007. Similar results were obtained for knotweed produced with melilot. The development of melilot was infinite in 2006, which triggered opposition between melilot and knotweed. The presence of melilot notably decreased the biomass of knotweed grown on loess and compost. Nevertheless, decreasing knotweed biomass was observed in all of the substrates. A significant decrease of knotweed biomass in the existence of melilot was also mentioned in 2007 when melilot growth was restricted, but this was only seen for the two low nutrient substrates, clay and loess. There was a significant big difference in the horizontal division amount of knotweed flowers between 2006 and 2007. Relatively large numbers of lateral branches were present in 2006, and these numbers decreased notably in 2007 to 9 and 5 in crops grown on compost within the absence and presence of melilot, respectively. Skin infection The variety of lateral branches were paid down more to 0 2 in plants grown on the other substrates. The below-ground biomass of knotweed was only measured in 2007. Belowground biomass was significantly lower in plants grown on clay, significantly higher in plants grown on clay enriched with vitamins, and was best in plants grown on compost. The biomass of plants grown on loess was intermediate between plants grown Gemcitabine molecular weight on clay and those grown on clay. The current presence of melilot decreased the underground biomass of knotweed grown on loess, clayC, and clay. The percentage content of resveratrol in knotweed rhizomes and roots was greater in the existence of melilot in 2007, except in the event of knotweed developed on compost and clayC. Similar but non significant trends were noticed in 2006. Generally speaking, the greatest levels of resveratrol were within plants grown on clayCS in the presence of melilot. The best levels were within plants grown on loess without melilot in 2006. Piceid is really a glucoside of resveratrol. The information of the piceid was also significantly higher in the presence of melilot for plants grown on loess and clay. Resveratrol and its derivatives, including the glycosidic and aglyconic stilbenes, resveratrol, piceatannol, piceid and astringin, were somewhat higher in plants grown in the presence of melilot on clayCS, loess and clay. With regards to nitrogen production, the greatest levels in knotweed roots and rhizomes were found when plants were grown on compost and on clayCS.