| Researcher(s) |
Geoff Dean (SFS/TIAR) Regan Parkinson (SFS/TIAR) |
|---|---|
| Year(s) | 2007 |
| Contributor | Southern Farming Systems |
| Trial location(s) |
Cressy, TAS
|
The aim of this study was to determine the optimal animal production and economic stocking rate for lambs grazing dual purpose wheat crops over winter and to assess the effects of different stocking rates and grazing intensity on subsequent plant growth and final
grain yield.
Individual liveâ€weight gains were highest at the lower stocking rates, but income per hectare was considerably greater at the higher stocking rates with income over $1000/ha at rates of 40 and 50 lambs/ha. Grain yields tended to be higher for the lowest stocking rate but it is likely this was largely due to increased populations of ryegrass with higher grazing pressure.
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Related program | N/A |
| Acknowledgments |
Ian and AG Morrison for land and assistance with weighing lambs. |
| Other trial partners | Not specified |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Demonstration |
| Trial design | Unreplicated |
| Sow date | 12 March 2007 |
|---|---|
| Harvest date | Not specified |
| Plot size | Not specified |
| Plot replication | Not specified |
| # | Variety |
Treatment 1
|
Grain yield (t/ha) | Weeds (plants/m2) |
|---|---|---|---|---|
| 1 | █ Mackellar | █ average of 30, 40 and 50 lambs/ha | 5.44 | 21 |
| 2 | █ Mackellar | █ 20 lambs/ha | 5.08 | 17 |
| 3 | █ Mackellar | █ 10 lambs/ha | 6.3 | 3 |
SILO weather estimates sourced from https://www.longpaddock.qld.gov.au/silo/
Jeffrey, S.J., Carter, J.O., Moodie, K.B. and Beswick, A.R. (2001). Using spatial interpolation to
construct a comprehensive archive of Australian climate data , Environmental Modelling and Software, Vol
16/4, pp 309-330. DOI: 10.1016/S1364-8152(01)00008-1.
