| Researcher(s) |
Rebekah Allen Mick Faulkner Glenn McDonald Kaidy Morgan Sam Trengove |
|---|---|
| Year(s) | 2023 |
| Contributor | Hart Field Site Group |
| Trial location(s) |
Bute, SA
Giles Corner, SA Hart, SA |
| Further information | View external link |
To investigate techniques to improve the effectiveness of dry or early sowing by quantifying effects of sowing depth and rate on plant establishment, growth and yield under varying soil moisture conditions and times of sowing.
• Despite observed differences in establishment between times of sowing (TOS) for wheat and canola, early sown crops resulted in higher yields due to improved water use efficiency (WUE) for biomass and grain production at Hart.
• With a dry subsoil there was no benefit of deep sowing canola or wheat. In general, similar yields were achieved from shallow and standard sowing depths.
• Increasing sowing rates to compensate for anticipated lower establishment did not increase yields of canola and wheat in most cases.
• Preliminary data from Hart suggests that soil moisture at sowing may be an indicator of plant establishment (%), with an approximate 2% reduction in establishment noticed for every 1% decline in soil moisture for both wheat and canola, regardless
of TOS.
| Lead research organisation | N/A |
|---|---|
| Host research organisation | N/A |
| Trial funding source | South Australian Grains Industry Trust (SAGIT) |
| Related program | N/A |
| Acknowledgments |
We would like to acknowledge the SA Drought Hub and South Australian Grains Industry Trust (SAGIT) for their financial |
| Other trial partners | Not specified |
| Crop types | Cereal (Grain): Wheat Oilseed: Canola |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated |
| Sow rate or Target density | 180, 270 plants/m2 |
|---|---|
| Sowing machinery |
Kknife-point press wheel system |
| Sow date | TOS 1: April 21; TOS 2: May 5; TOS 3: May 19 |
| Harvest date | Unknown |
| Plot size | Not specified |
| Plot replication | Not specified |
| Sow rate or Target density | 180, 240 plants/m2 |
|---|---|
| Sowing machinery |
Knife-point press wheel system |
| Sow date | TOS 1: April 21; TOS 2: May 5; TOS 3: June 2 |
| Harvest date | Unknown |
| Plot size | Not specified |
| Plot replication | Not specified |
| Sow rate or Target density | 50, 70 plants/m2 |
|---|---|
| Sowing machinery |
Knife-point press wheel system |
| Sow date | TOS 1: April 21; TOS 2: May 5; TOS 3: June 2 |
| Harvest date | Unknown |
| Plot size | Not specified |
| Plot replication | Not specified |
| Sow rate or Target density | 180, 225, 270 plants/m2 |
|---|---|
| Sowing machinery |
Knife-point press wheel system |
| Sow date | TOS 1: April 27; TOS 2: May 5; TOS 3: June 2 |
| Harvest date | Unknown |
| Plot size | Not specified |
| Plot replication | Not specified |
| Sow rate or Target density | 45, 56, 68 plants/m2 |
|---|---|
| Sowing machinery |
Knife-point press wheel system |
| Sow date | TOS 1: April 21; TOS 2: May 5; TOS 3: June 2; TOS 4: June 20 |
| Harvest date | Unknown |
| Plot size | Not specified |
| Plot replication | Not specified |
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.
