Effects of Different Weeding Frequencies and Methods on the Yield and Quality of Radix bupleuri
- Received Date: 13/05/2021
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Key words:
- bupleurum (Radix bupleuri) /
- weed survey /
- weeding /
- weeding method /
- saikosaponin
Abstract: In a study reported in this paper,weeds species in the experimental field of bupleurum (Radix bupleuri) of Wangcang County were surveyed,and the effects of weeding frequencies and methods on the yield and qualityof bupleurum wereinvestigated.A total of 16 species of weeds belonging to 11 families were recorded,of which broad-leaved weeds accounted for 87.5% of the total,and Setaria viridis (L.) Beauv., a weed grass,had a relative abundance of 56.89%.Compared with the no-weeding control,one or two times of weeding did not affectthe root weight of bupleurum,three times of weeding and complete artificial weedingsignificantly increasedits root weight. The root weight of bupleurum was significantly different from that of local farmers' weeding treatment after the four weeding treatment methods (application of quizalofop-P-ethyl,haloxytop-R-mithyl,mixed application of quizalofop-P-ethyl+haloxytop-R-mithyl and black plastic film mulching). Blackplastic filmmulching gave the highestyield,with an average root weightof 3.64 g.HPLC (high performance liquid chromatography) showed that there was no significant difference in the total amount of saponin A and saponin D between different weeding times and different weeding methods.In conclusion,covering with black mulching can effectively improve the yield of bupleurum,and has no significant effect on its quality,so it is recommended as the main green control technology for weedsin bupleurum production.