Abstract
This study examined the growth promotion effects of selected water extracts on Peucedanum japonicum. As secondary considerations, the mineral nutrition levels were measured in both the extracts and the test plant. In addition, the levels of chlorophyll and the photosynthetic efficiency in the test plant were analyzed after the treatment of selected plant extracts. Finally, the total phenol, flavonoid contents, and DPPH (2,2′-diphenyl-1-picrylhydrazyl) radical scavenging activity in Peucedanum japonicum leaves were determined after the extract treatments. The shoot fresh weight of Peucedanum japonicum increased in response to all the extracts used, and in some cases increased at rates of 16–49% after extract treatments. Compared to the control, the photosynthetic efficiency and chlorophyll content of the Peucedanum japonicum plants did not vary significantly. In measuring the macro and microelements in the extracts, those with the highest levels were not necessarily the most effective growth promotors of Peucedanum japonicum plants. However, nutrition levels increased significantly in Peucedanum japonicum leaves after extract treatments. The total phenol contents in the Peucedanum japonicum leaves increased significantly when treated with the soybean stem extracts at 3%, Chinese chive extract at 0.5–3%, onion extract at 0.5%, or tomato extract at 3%. The total flavonoid contents in the Peucedanum japonicum leaves treated with the soybean leaf extracts at 0.5 to 3% increased by 23–36% compared to the control, but there were no differences with other extracts. Thus, the plant extracts tested in this study showed improved growth promotion, mineral contents, total phenol, total flavonoid contents, and DPPH radical scavenging activity.
Highlights
Organic agricultural practices are becoming more popular because of increased consumer interest and the demand for safer agricultural products [1]
The plant extracts tested in this study showed improved growth promotion, mineral contents, total phenol, total flavonoid contents, and DPPH radical scavenging activity
One of the characteristic responses to seaweed extract treatments is an increase in chlorophyll content in the treated plants, which has been observed in a wide range of crops, including grapevine and strawberry [12,13,25]
Summary
Organic agricultural practices are becoming more popular because of increased consumer interest and the demand for safer agricultural products [1]. Owing to its increasing popularity, this study examined this plant to determine how its growth levels might be improved with the application of liquid fertilizers made using extracts from organic materials. This study examined both the chlorophyll and mineral content as well as the plant photosynthetic efficiency because these have been linked to growth promotion in previous studies Secondary metabolites, such as phenolic acids and flavonoids, play a large part in determining a plant’s nutritional benefits as well as their ability to resist disease. There are no studies on how phenolic acids and flavonoids might be increased in Peucedanum japonicum after the application of soybean leaves and stems, Chinese chive, onion, and tomato water extracts. The total phenol and flavonoid contents, and DPPH radical scavenging activity in Peucedanum japonicum leaves were determined after various extract treatments
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call