Jäck, Ortrud
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences
Conference paper2019Peer reviewedOpen access
Chlorophyll Fluorescence Measurement: A New Method to Test the Effect of Two Adjuvants on the Efficacy of Topramezone on Weeds
Zhang, Jinwei; Jack, Ortrud; Menegat, Alexander; Li, Gen; Wang, Xiu
Abstract
To test the effect of adjuvant on the efficacy of herbicides in a fast and non-destructive way is very helpful for selecting a right spray adjuvant for herbicide, which is an important strategy to enhance the efficacy of herbicides, reduce application dose, and enhance environmental safety. Experiments were conducted in the laboratory and greenhouse to study the effect of 2 adjuvants - Methylated seed oil (MSO) and organosilicone on the efficacy of topramezone on grass weed giant foxtail (Setaria faberi Herrm.) and broadleaved weed velvetleaf (Abutilon theophrasti Medik.) using weed leaves chlorophyll fluorescence measurement and whole plant biomass test. The results indicated that the top leaf maximum quantum efficiency (Fv/Fm) of two weeds treated by herbicide mixed with MSO adjuvant was significantly lower than that of treated by herbicide alone from the 2-3 days after treatment, while the difference between treatments of herbicide mixed with organosilicone adjuvant and herbicide applied alone was not significant. Results of the whole-plant pot tests showed biomass of the treatment of topramezone mixed with MSO was significantly lower than that of herbicide applied alone. This is similar to the result of chlorophyll fluorescence test. Chlorophyll fluorescence measurement has proven to be an attractive tool for studying the effect of the adjuvants on the efficacy of herbicide.
Keywords
Weed; Chlorophyll fluorescence test; Adjuvant; Methylated seed oil (MSO); Fv/fm
Published in
IFIP Advances in Information and Communication Technology
2019, Volume: 545, pages: 206-216
ISBN: 978-3-030-06136-4, eISBN: 978-3-030-06137-1
Publisher: SPRINGER INTERNATIONAL PUBLISHING AG, GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND
Conference
11th IFIP WG 5.14 International Conference on Computer and Computing Technologies in Agriculture (CCTA), AUG 12-15, 2017, Jilin, PEOPLES R CHINA
Menegat, Alexander
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences
- Department of Crop Production Ecology, Swedish University of Agricultural Sciences
SLU Authors
UKÄ Subject classification
Agricultural Science
Publication identifier
DOI: https://doi.org/10.1007/978-3-030-06137-1_20
Permanent link to this page (URI)
https://res.slu.se/id/publ/117776