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Catalogue: GRDC Publications
" Goondiwindi GRDC Grains Research Update Day 1 - Tuesday 4 th March Time Topic Speaker (s) 10:00 AM James Clark (Chair Northern Welcome Panel GRDC) 10:10 AM General plenary (Supported by North West Local Land Services) 10:10 AM 10:40 AM.. Overall, both models are acceptable for modelling soil evaporation over a range of soils and seasons provided accurate soil physical properties and starting water states are known... Overall, populations increased five times compared to before planting the summer crops, but remained below 250/kg soil (Figure 4)...
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Catalogue: GRDC Updates
At a trial site near Yallaroi in 2012, a range of crops and varieties were grown where performance was evaluated in strips with contrasting starting levels of Pt ... All varieties evaluated in all 9 trials except CICA0912 (only 6 trials).. Differences in Pt populations following a range of crops assessed at two sampling times during the fallow, Yallaroi 2012..
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Catalogue: GRDC Updates
Crop rotations must be selected according to the species of root-lesion nematode present on your farm... Summer crops offer a means of reducing the populations of root-lesion nematodes but only when you know which species of root-lesion nematode is present... Results from a field experiment show that populations at 0-15 cm increased after harvest compared to the populations at planting (striped bar)...
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Catalogue: GRDC Final Reports
RLN cause substantial yield losses, particularly in wheat, but they reproduce on numerous summer and winter crops... The resistance experiments also demonstrated the large range of susceptibility within crops, even for barley, providing an additional benefit from this work... We conducted a targeted survey of nine farms in the northern grain region to gain knowledge about the presence of the stunt nematode and zoosporic fungi such as Olpidium (zoosporic fungi are characterised by the production of spores called zoospores which have flagella and are motile in water)...
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Catalogue: GRDC Updates
Summer crops that are resistant to root-lesion nematodes can be used to reduce nematode populations... In an experiment in 2011 at Formartin, several varieties of summer crops were grown and P. thornei populations were assessed before planting and after harvest... Means of several varieties within each crop are presented...
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Catalogue: GRDC Publications
Nematodes reduce yields in intolerant wheat cultivars Nematodes reduce the amount of water available for plant growth Nematodes impose early stress that reduces yield potential despite the availability of water and nutrients Maintaining a low nematode population improves crop yields.. Overall, populations increased five times compared to before planting the summer crops, but remained below 250/kg soil (Figure 4)... Data is presented as an average of the added CR and no added CR treatments for this site...
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Catalogue: GRDC Media
Nematode management critical to preserving wheat yields.. "The research found that growing one resistant crop, such as sorghum, maize or sunflower did not provide a quick fix in a field that started with damaging levels of 2500 P. thornei /kg soil... Populations of P. thornei increased after growing mungbean or soybean compared to sunflower, sorghum, maize or clean fallow and there were significant differences between the soybean and mungbean varieties...
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Catalogue: GRDC Media
Nematode populations following the summer crop rotation hold important implications for wheat variety selection and yield performance... "The research found that growing one resistant crop, such as sorghum, maize or sunflower did not provide a quick fix in a field that started with damaging levels of 2500 P. thornei /kg soil... Populations of P. thornei increased after growing mungbean or soybean compared to sunflower, sorghum, maize or clean fallow and there were significant differences between the soybean and mungbean varieties...
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Catalogue: GRDC Media
Know your nematodes and set up a crop defence system in 2014.. WA growers are encouraged to find out what species and levels of root lesion nematodes (RLN) are present in their soils during the growing season... DAFWA research has indicated crops that are resistant to P. penetrans are often highly susceptible to P. neglectus or P. teres, highlighting the importance of knowing which species of RLN is present - as management of one RLN species may be causing an increase in another...
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Catalogue: GRDC Media
Know your nematodes and set up a crop defence system in 2014.. WA growers are encouraged to find out what species and levels of root lesion nematodes (RLN) are present in their soils during the growing season... DAFWA research has indicated crops that are resistant to P. penetrans are often highly susceptible to P. neglectus or P. teres, highlighting the importance of knowing which species of RLN is present - as management of one RLN species may be causing an increase in another...
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