Welcome to the latest NGA newsletter and a snapshot of the 2012 Winter program. The program is very diverse with a range of nutrition, weed, disease and nematode trials already underway or planned.
We hope you find the information useful. Once again, if you have feedback (positive or negative) we would be glad to hear from you.
2012 Winter Trial Snapshots
1. Nitrogen Timing for Protein
Six small plot trials are being conducted, comparing nitrogen application timings and methods. Three of the trials will also compare the equivalent level of additional nitrogen applied at planting or split between planting and early stem elongation. NSW DPI are also conducting three trials, with a number of common treatments, over a range of wheat varieties.
2. Root-Lesion Nematodes
A multi-crop site has been planted at Yallaroi to compare the impact of Pratylenchus thornei (Pt) on crop yield and nematode multiplication. ‘Low’ Pt strips have ~2,000 Pt/kg soil whilst ‘High’ Pt strips averaged ~19,000 Pt/kg soil. A CSIRO trial is also included at this site to generate detailed data for modelling of nematode impacts.
3. Canola Agronomy
Trials have been planted at Yallaroi and Bellata to investigate the impact of N, P and S levels on crop yield and oil content. Similar nutrition trials are being conducted by NSW DPI at Moree, Spring Ridge and Coonamble.
Six trials will evaluate both knockdown and subsequent residual control of key in-crop winter cereal herbicides. The aim is to identify robust winter crop strategies to limit or avoid the difficulty of controlling fleabane ‘escapes’ in the summer fallow.
5. Feathertop Rhodes Grass (FTR)
Four trials will evaluate residual winter crop herbicides for useful activity against spring germinating FTR. Herbicides are being applied as per in-crop recommendations but with trial sites maintained as fallows to maximise the emergence of FTR in the spring.
6. Nitrogen Application in Chickpeas
Field observations have suggested yield responses in chickpeas when planted into higher nitrogen situations. Six small plot trials are being conducted to assess for any evidence of nitrogen yield responses in chickpeas and to allow for economic analysis. Trials are already planted at Yallaroi, Tulloona, Walgett and Felton with sites still to be planted at Bellata and Allora.
7. Barley Leaf Rust
Four small plot trials are planned to fine tune the fungicide management strategies. This is expected to complete our barley leaf rust project activity. Greg Platz of DAFF is evaluating similar fungicide strategies on a range of varieties with varying resistance levels.
8. Yellow Leaf Spot (YS)
Similar to the barley leaf rust project. Four small plot trials will be conducted to test fungicide timing against YS in EGA Gregory. This is expected to complete the YS fungicide management project.
9. Botrytis Grey Mould (BGM) in Chickpeas
BGM is a sporadic issue in chickpeas but can cause major yield and economic impacts as seen in 2010. Fungicide screening work has been planned to enable four small plot trials to be rapidly established if seasonal conditions are conducive to disease development in 2012.
10. Fababean Diseases
Disease data on chocolate spot and leaf rust was not able to be generated in 2011. Two trials are planned to test a range of fungicides for the management of these issues if seasonal conditions are conducive to disease development in 2012.
11. Botryosphaeria – White Grain Disorder
One small plot screening trial will be conducted to assess for fungicide efficacy against this disease. The trial will use approaches that have been moderately effective against Fusarium head blight in wheat.
If you have trouble opening these links our website address is www.nga.org.au