The use of low energy 680nm LASER alone or in combination with photosynthetic electron transport chain inhibitors in the management of weeds
Wright, L. (2021) The use of low energy 680nm LASER alone or in combination with photosynthetic electron transport chain inhibitors in the management of weeds. Doctoral thesis, Harper Adams University.
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Abstract
This thesis outlines the evidence detailing the potential of the use of low energy LASER energy, in particular, LASER diodes emitting 680nm light as a novel approach in the management of weeds in agriculture. The data presented quantifies the changes in plant cellular biochemistry upon use of the 680nm LASER alone or in combination with selected photosystem II inhibitors and for comparison, a herbicide of an alternative mode of action. Changes in the state of photosystem II are quantified, as is plant membrane stability quantified by percentage relative conductivity measurements and reactive oxygen species production and the biochemical response to this. One main focus of the thesis is the OJIP parameter reading outputs. This includes the commonly used Fv.Fm ration and a range of other parameters which are less commonly used but form detailed evidence of the changes in photosystem II upon application of the 680nm LASER and herbicide treatment. The culmination of linking the aforementioned measurement areas provides a clear image of the plant responses to treatment which can form a basis on which to design further studies and decisions as to the suitability of LASER energy in the management of weeds can be made.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Divisions: | Agriculture and Environment (from 1.08.20) |
| Depositing User: | Ms Kath Osborn |
| Date Deposited: | 19 Nov 2021 13:15 |
| Last Modified: | 19 Nov 2021 13:15 |
| URI: | https://hau.repository.guildhe.ac.uk/id/eprint/17770 |
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