eCite Digital Repository
Plant growth regulator use in broad acre crops
Citation
Botwright Acuna, T and Merry, A and Carew, A and Leith, P, Plant growth regulator use in broad acre crops, Proceedings of the 17th Australian Society of Agronomy Conference, 20-24 September 2015, 20-24 September 2015, pp. 1-4. (2015) [Refereed Conference Paper]
 | PDF 336Kb |
Copyright Statement
Copyright 2015 the author
Official URL: http://www.agronomyaustralia.org/
Abstract
There is little reliable information on how, why and on which crops plant growth regulators (PGRs) are
currently used in Australia. Such information is needed to better link research and development with
extension. Currently the four main classes of PGRs used in Australia include Ethephon (ETH), onium-types
(chlormequat, CCC), and second and third generation PGRs; the triazoles (e.g. tebuconazole, TEB) and
trinexapac-ethyl (TE), respectively. Of these, only CCC, TEB, TE are registered for use in cereals and none
for canola. To better understand current usage of PGRs in grain crops, a telephone survey of 142 agronomists
working across Australian grain growing regions was conducted. Participants provided information relating
to PGR usage on the range of crops grown in their area, including, rates of application, reasons for use,
response of crops/effectiveness, and a variety of other variables. The potential economic contribution of PGR
to the grains industry was estimated from analysis of reported yield gains from application of PGR to wheat
in the high rainfall zone (HRZ). Application of PGR with no change in yield from, for example, a 2.38 Mha
area (representing 70% of the HRZ) would lead to a cost of around $70M. In contrast, there was an estimated
net benefit of $35M and $138M for a 5 and 10% increase in grain yield in the HRZ. This research highlights
the need to better understand use of and yield responses to PGRs under a range of climatic, regional and
cultivation situations, through co-ordinated research and extension.
Item Details
| Item Type: | Refereed Conference Paper |
|---|---|
| Keywords: | wheat, PGRs |
| Research Division: | Agricultural, Veterinary and Food Sciences |
| Research Group: | Crop and pasture production |
| Research Field: | Agronomy |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Grains and seeds |
| Objective Field: | Wheat |
| UTAS Author: | Botwright Acuna, T (Professor Tina Acuna) |
| UTAS Author: | Merry, A (Dr Angela Merry) |
| UTAS Author: | Carew, A (Dr Anna Carew) |
| UTAS Author: | Leith, P (Dr Peat Leith) |
| ID Code: | 103199 |
| Year Published: | 2015 |
| Deposited By: | Tasmanian Institute of Agriculture |
| Deposited On: | 2015-09-25 |
| Last Modified: | 2016-05-09 |
| Downloads: | 427 View Download Statistics |
Repository Staff Only: item control page