The information contained in this publication is based on knowledge and understanding at the time of writing (July 2017) and may not be accurate, current or complete. The State of New South Wales (including the NSW Department of Industry), the author and the publisher take no responsibility, and will accept no liability, for the accuracy, currency, reliability or correctness of any information included in the document (including material provided by third parties). Readers should make their own inquiries and rely on their own advice when making decisions related to material contained in this publication. The product trade names in this publication are supplied on the understanding that no preference between equivalent products is intended and that the inclusion of a product name does not imply endorsement by the department over any equivalent product from another manufacturer.
| Researcher(s) |
Michael Dal Santo (NSW DPI) Neroli Graham Rick Graham (NSW DPI) Stephen Morphett (NSW DPI) Jim Perfrement (NSW DPI) |
|---|---|
| Year(s) | 2015 |
| Contributor | Department of Primary Industries NSW |
| Trial location(s) |
Terry Hie Hie, NSW
|
| Further information | View external link |
The aim of this experiment at Terry Hie Hie on the north-western plains of NSW was to determine if there were differences between varieties with varying maturity types in terms of grain yield and quality parameters with different plant densities and sowing dates.
Conclusions:
Results from this experiment highlight the importance of timely sowing, particularly for mid–late maturing varieties. Yield reductions of approximately 1.3 t/ha averaged across plant population treatments were recorded for the mid–late maturing varieties LRPB LancerA and EGA GregoryA with delayed sowing, which equates to a 25% and 26% yield decline, respectively. Similarly, the late maturing variety EGA EaglehawkA suffered a yield penalty of around 22% (0.98 t/ha) whilst the mid maturing variety SuntopA suffered a 14% (0.70 t/ha) yield reduction due to delayed sowing. In comparison, the earlier maturing varieties LRPB DartA and LRPB SpitfireA suffered only minimal yield reductions when SD was delayed. Importantly however, the earlier maturing varieties did not exhibit any yield advantage over the later maturing varieties in SD 2 and were significantly lower yielding than these varieties at SD 1. Temperature and plant available water during anthesis/grain fill would also have affected both yield potential and grain quality parameters, with limited effective in-crop rainfall in September/October, and temperatures exceeding 35 °C for an extended period from 4 October. The longer season variety EGA EaglehawkA in particular had high screenings for both SDs, and also produced a low yield in SD 2, reinforcing the need to sow this variety early due to its lack of adaptability under unfavourable conditions. Increasing plant population had a greater influence on GY when SD was delayed, with yield potential optimised at 200 plants/m2 in SD 2 vs. 100 plants/m2 in the earlier SD 1, supporting the principal of increasing targeted plant populations with delayed sowing. These findings further emphasise the advantage of planting early in the sowing window compared to delayed sowing just simply in terms of input seed requirements. Variety selection and sowing date particularly affected grain quality parameters and screenings. There was a significant increase in the level of screenings for all varieties when sowing was delayed. LRPB LancerA was the only variety in this experiment that achieved screenings of <5%, but only at SD 1. All other varieties, including LRPB LancerA in SD 2, exceeded the critical 5% screenings receival standards level. LRPB LancerA appears to have excellent grain stability with significantly lower screenings than either EGA GregoryA or SuntopA. Findings from this experiment indicate that there were differences between varieties in terms of grain stability, due possibly to variations in kernel shape/plumpness and or kernel weight stability. These results also highlight the adaptability of some of the mid–late season 16 | NSW Department of Primary Industries varieties, and the yield and quality advantages of sowing these varieties early, compared with sowing earlier maturing varieties later
| Lead research organisation |
Department of Primary Industries NSW |
|---|---|
| Host research organisation | N/A |
| Trial funding source | GRDC DAN00167 |
| Trial funding source | DPI NSW |
| Related program |
Variety Specific Agronomy Packages for southern, central and northern NSW |
| Acknowledgments |
This experiment was part of the project Variety Specific Agronomy Packages for southern, central and northern NSW (DAN00167), with joint investment by NSW DPI and GRDC. Thanks to the Ledingham family for hosting the site and to Gav McDouall, HMAg for his assistance. Technical assistance provided by Jan Hosking, Peter Formann, Rod Bambach and Richard Morphett (all NSW DPI) is also gratefully acknowledged. |
| Other trial partners | Co-operator: Michael Ledingham |
| Crop type | Cereal (Grain): Wheat |
|---|---|
| Treatment type(s) |
|
| Trial type | Experimental |
| Trial design | Randomised,Replicated,Blocked |
| Sow rate or Target density | Plant population (PP) 1: 50 plants/m2 PP 2: 100 plants/m2 PP 3: 200 plants/m2 |
|---|---|
| Sow date | 8 May 2015 SD 1: 8 May 2015 SD 2: 7 June 2015 |
| Harvest date | 18 November 2015 |
| Plot size | Not specified |
| Plot replication | 3 |
| Plot blocking | A fully factorial, three replicate split plot design. |
| Fertiliser |
40 kg/ha Granulock Z extra and 300 kg urea (140 kg N/ha) side banded at planting |
| Other trial notes |
This research paper is an extract from the publication Northern NSW Research Results 2017, available at |
| @T1: (08-05-2018) | @T2: (07-06-2018) | |||||||
|---|---|---|---|---|---|---|---|---|
| # | Variety |
Screenings (%) | Grain yield (t/ha) | 1000 grain weight (g) | Grain protein (%) | Grain protein (%) | Screenings (%) | Grain yield (t/ha) |
| 1 | █ LRPB Lancer | 3.6a | 5.28a | 31.5a | 12.0b | 13.5b | 11.4a | 3.97bc |
| 1 | █ LRPB Lancer | 8.9c | 5.18a | 31.1a | 11.4c | 12.5d | 14.4b | 4.47a |
| 2 | █ Suntop | 6.4b | 5.09a | 31.2a | 11.3c | 12.6d | 13.9b | 3.77c |
| 2 | █ Suntop | 13.9d | 4.35b | 26.3b | 12.4ab | 13.5b | 23.9d | 3.38d |
| 3 | █ EGA Gregory | 10.1c | 4.11bc | 30.0a | 12.4ab | 13.1c | 19.2c | 4.06b |
| 3 | █ EGA Gregory | 8.6c | 3.89c | 31.4c | 12.8a | 13.9a | 17.9c | 3.73c |
| 4 | █ Ega Eaglehawk | |||||||
| 4 | █ Ega Eaglehawk | |||||||
| 5 | █ LRPB Dart | |||||||
| 5 | █ LRPB Dart | |||||||
| 6 | █ LRPB Spitfire | |||||||
| 6 | █ LRPB Spitfire | |||||||
| Rainfall avg ann (mm) | 603mm |
|---|---|
| Rainfall avg gsr (mm) | 297.2mm |
| Rainfall trial gsr (mm) | 190mm |
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.
Plant Breeders’ Rights (PBR)
Some crop varieties used in research trials may be covered by Plant Breeders' Rights (PBR). Users should confirm PBR status of relevant varieties by searching the IP Australia PBR database, http://pericles.ipaustralia.gov.au/pbr_db/ or Variety Central (http://varietycentral.com.au/) and contacting variety owners for further information if required. Where possible, varieties have been listed according to their registered PBR name, although OFT cannot and does not guarantee that the information is accurate or complete.
Note that PBR cover is administered through the Plant Breeders’ Right Act 1994 (