Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests
Proper selection of adjuvant applications is an important strategy to enhance herbicide efficacy and reduce active ingredient input especially under adverse environmental conditions. In this study, a two-factor split-plot-design experiment was conducted to evaluate the effects of two adjuvants on th...
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| Format: | Article |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.920902/full |
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| author | Jinwei Zhang Yaqiong Xie Chunhua Zhang Peng Zhang Chunhong Jia Ercheng Zhao |
| author_facet | Jinwei Zhang Yaqiong Xie Chunhua Zhang Peng Zhang Chunhong Jia Ercheng Zhao |
| author_sort | Jinwei Zhang |
| collection | DOAJ |
| description | Proper selection of adjuvant applications is an important strategy to enhance herbicide efficacy and reduce active ingredient input especially under adverse environmental conditions. In this study, a two-factor split-plot-design experiment was conducted to evaluate the effects of two adjuvants on the efficacy of topramezone on the grassy weed species giant foxtail (Setaria faberi Herrm.) and the broadleaved weed species velvetleaf (Abutilon theophrasti Medik.) under three different temperature conditions. The two tested adjuvants were methylated seed oil (MSO) and organosilicone. Three temperature levels, 35/30°C, 25/20°C, and 15/10°C (day/night), were used in the laboratory and greenhouse experiment. Plant chlorophyll fluorescence measurements shortly after herbicide application and classic whole-plant bioassay methods were used to evaluate the herbicide efficacy among the different treatments. Results indicated that the maximum quantum efficiency (Fv/Fm) of the top leaf of the weeds treated with topramezone mixed with MSO was significantly lower than that of the weeds treated with topramezone mixed with organosilicone and without an adjuvant at 2–3 days after treatment under all three temperature levels. The herbicide response of the plants treated with topramezone mixed with organosilicone and topramezone alone was not significantly different. These results corresponded well with the results of the classic whole-plant test. MSO has been shown to be good at enhancing the efficacy of topramezone on these weed species under all three temperature conditions. The measurement of chlorophyll fluorescence is a promising technique for evaluating the effects of adjuvants on the efficacy of herbicides shortly after herbicide treatment. |
| first_indexed | 2024-12-11T23:43:28Z |
| format | Article |
| id | doaj.art-367429b5436045718de50a854ab0cba9 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-11T23:43:28Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-367429b5436045718de50a854ab0cba92022-12-22T00:45:40ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-07-011310.3389/fpls.2022.920902920902Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence testsJinwei Zhang0Yaqiong Xie1Chunhua Zhang2Peng Zhang3Chunhong Jia4Ercheng Zhao5Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, ChinaMAP Field Crop Division, Sinochem Agriculture Holdings, Beijing, ChinaBeijing Grand Agro Chem Co., Ltd., Beijing, ChinaBeijing Grand Agro Chem Co., Ltd., Beijing, ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, ChinaInstitute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, ChinaProper selection of adjuvant applications is an important strategy to enhance herbicide efficacy and reduce active ingredient input especially under adverse environmental conditions. In this study, a two-factor split-plot-design experiment was conducted to evaluate the effects of two adjuvants on the efficacy of topramezone on the grassy weed species giant foxtail (Setaria faberi Herrm.) and the broadleaved weed species velvetleaf (Abutilon theophrasti Medik.) under three different temperature conditions. The two tested adjuvants were methylated seed oil (MSO) and organosilicone. Three temperature levels, 35/30°C, 25/20°C, and 15/10°C (day/night), were used in the laboratory and greenhouse experiment. Plant chlorophyll fluorescence measurements shortly after herbicide application and classic whole-plant bioassay methods were used to evaluate the herbicide efficacy among the different treatments. Results indicated that the maximum quantum efficiency (Fv/Fm) of the top leaf of the weeds treated with topramezone mixed with MSO was significantly lower than that of the weeds treated with topramezone mixed with organosilicone and without an adjuvant at 2–3 days after treatment under all three temperature levels. The herbicide response of the plants treated with topramezone mixed with organosilicone and topramezone alone was not significantly different. These results corresponded well with the results of the classic whole-plant test. MSO has been shown to be good at enhancing the efficacy of topramezone on these weed species under all three temperature conditions. The measurement of chlorophyll fluorescence is a promising technique for evaluating the effects of adjuvants on the efficacy of herbicides shortly after herbicide treatment.https://www.frontiersin.org/articles/10.3389/fpls.2022.920902/fulltopramezoneadjuvantmethylated seed oilchlorophyll fluorescence testearly efficacy evaluation |
| spellingShingle | Jinwei Zhang Yaqiong Xie Chunhua Zhang Peng Zhang Chunhong Jia Ercheng Zhao Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests Frontiers in Plant Science topramezone adjuvant methylated seed oil chlorophyll fluorescence test early efficacy evaluation |
| title | Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| title_full | Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| title_fullStr | Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| title_full_unstemmed | Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| title_short | Early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| title_sort | early evaluation of adjuvant effects on topramezone efficacy under different temperature conditions using chlorophyll fluorescence tests |
| topic | topramezone adjuvant methylated seed oil chlorophyll fluorescence test early efficacy evaluation |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.920902/full |
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