In-field film antitranspirants application shows potential yield protection from flowering 1 stage drought periods in winter canola (Brassica napus L.)
Faralli, M., Grove, I.G., Hare, M.C. and Kettlewell, P.S. (2017) In-field film antitranspirants application shows potential yield protection from flowering 1 stage drought periods in winter canola (Brassica napus L.). Crop and Pasture Science, 68 (3). pp. 243-253.
|
Text
Ivan Grove in-field antitranspirants 4 Mar 17 upload.pdf - Accepted Version Download (903kB) | Preview |
Abstract
Crop-management solutions that simulate plant water-saving strategies might help to mitigate drought damage in crops. Winter canola (Brassica napus L.) is significantly drought-sensitive from flowering to mid-pod development, and drought periods lead to significant yield losses. In this study, the drought-protection efficacy of different chemicals with antitranspirant activity applied just before key drought-sensitive phenological stages was tested on field-grown canola in two years. Drought was artificially imposed with rain shelters. The results suggest that in-field application of 1 L ha–1 of antitranspirant (Vapor Gard (VG), a.i. di-1-p-menthene) at GS6.0 (BBCH growth scale, initiation of flowering) mitigated drought-induced yield loss leading to a 22% seed-yield benefit on average over 2 years of experiments compared with the unsprayed unirrigated plots. No significant yield responses were found from application at GS7.0, with increasing VG concentrations (i.e. 2 and 4 L ha–1), or with an antitranspirant with short-lasting effectiveness. The data suggest that in field conditions where drought occurs during the flowering stage, application of 1 L ha–1 of VG just before the drought event can reduce yield loss. This result should encourage further work on water-saving management strategies during key drought-sensitive phenological stages as drought mitigation tools in canola and under different environments.
| Item Type: | Article |
|---|---|
| Keywords: | crop management, grain yield, oilseed rape, stomatal conductance, water stress |
| Divisions: | Crop and Environment Sciences (to 31.07.20) |
| Depositing User: | Ms Kath Osborn |
| Date Deposited: | 04 May 2017 15:29 |
| Last Modified: | 31 Aug 2018 12:15 |
| URI: | https://hau.repository.guildhe.ac.uk/id/eprint/15632 |
Actions (login required)
 |
Edit Item |