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Catalogue: Ground Cover
Alan Bowring who is researching the role of head and flag leaf development in contributing to wheat yield... New research is suggesting lower leaves contribute more to wheat yield than is currently the "accepted norm" - under which protection of the flag leaf is the principal determinant of grain yield... In similar cool long season conditions in Australia this also seems to be the case in more difficult hot, dry seasons in northern Australia, Alan Bowring's results suggest that the importance of the flag leaf is about half of what is accepted in the UK. His data indicates that in these dry conditions the earlier leaves preceding the flag leaf (especially the preceding two; flag leaf -1 and -2) have a similar overall contribution to yield as the flag leaf, at least in environments such as northern NSW. Contribution to yield of pre-flowering stem reserves was assessed in the research and is believed to contribute between 16 and 21 per_cent by remobilisation of sugars and proteins to the grain...
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Catalogue: Ground Cover
NSW DPI pulse research agronomist Dr Eric Armstrong has been looking at the residual effects of having a pulse cropping phase in farming systems in southern NSW... Research from the New South Wales Department of Primary Industries (DPI) has found that in 2013 and 2014 brown manuring had no clear yield advantage in the following wheat crop over harvesting pulses for grain... "There was also strong evidence that manuring pulses compared with those harvested for grain leads to a further increase in grain protein of between 1 and 1.5 per cent, but this is unlikely to negate the opportunity cost of manuring the previous crop for yield and protein gains alone," he says...
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Catalogue: Ground Cover
NSW DPI pulse research agronomist Dr Eric Armstrong has been looking at the residual effects of having a pulse cropping phase in farming systems in southern NSW... Research from the New South Wales Department of Primary Industries (DPI) has found that in 2013 and 2014 brown manuring had no clear yield advantage in the following wheat crop over harvesting pulses for grain... "There was also strong evidence that manuring pulses compared with those harvested for grain leads to a further increase in grain protein of between 1 and 1.5 per cent, but this is unlikely to negate the opportunity cost of manuring the previous crop for yield and protein gains alone," he says...
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Catalogue: Ground Cover
Researchers have detected a new leaf rust pathotype on samples of the Naparoo wheat variety collected in northern New South Wales in early August... As a consequence of the discovery, Professor Park has urged grain growers to be vigilant in checking their crops for leaf rust, and submit plant samples they suspect are infected with the disease for testing... He says the new pathotype found near Gragin and Graman, east of Moree, is a mutation of an existing pathotype that has added virulence for the leaf rust resistance gene, Lr24...
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Catalogue: Ground Cover
Trials deliver frost-susceptibility data.. Frost is said to cost the Australian grains industry $360 million in yield losses annually.. Researchers have assessed wheat and barley varieties' relative susceptibility to frost at the reproductive stage..
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Catalogue: Ground Cover
Workshops investigate early season frost impact.. Mr Faulkner was one of the presenters at the recent frost-management workshops, which provided practical advice on how to look for frost damage and best manage affected crops... Initiated by the GRDC Southern Panel following input and feedback from consultants across the region, the workshops were attended by hundreds of growers and advisers who were provided with information on how to identify frost damage and the likely success of a range of management strategies...
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Catalogue: Ground Cover
A group of people in a field (From left) David, Graham, Adam, Jason and Heidi Gooden plan to sow EGA Wedgetail wheat in April this year, if moisture conditions allow, on their farm near Osborne in southern New South Wales... If there is sufficient soil moisture, the Gooden family in southern New South Wales will be among an increasing number of grain growers starting the season early and sowing in April... Season 2015 will be their third year of sowing EGA Wedgetail wheat in April, if conditions allow...
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Catalogue: Ground Cover
"As a team we aim to better understand the complexities of frost in different environments, to determine whether there is genetic variation for frost tolerance in the field, to explore potential genetic and environmental interactions between regions, and to provide a focus on methods," Dr Biddulph says... "If there is variation - and preliminary results suggest that some genotypes may be more sensitive than others - we can assist breeding programs to develop varieties less sensitive to frost.".. While frost-tolerant crops are the ultimate goal, in order to get to that distant point we need a better understanding of how different frost events affect different cereals in different environments...
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Catalogue: Ground Cover
"As a team we aim to better understand the complexities of frost in different environments, to determine whether there is genetic variation for frost tolerance in the field, to explore potential genetic and environmental interactions between regions, and to provide a focus on methods," Dr Biddulph says... "If there is variation - and preliminary results suggest that some genotypes may be more sensitive than others - we can assist breeding programs to develop varieties less sensitive to frost.".. While frost-tolerant crops are the ultimate goal, in order to get to that distant point we need a better understanding of how different frost events affect different cereals in different environments...
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Catalogue: Ground Cover
Frost research to refine management.. National research is investigating: the influence of burning, raking, harvesting low and stubble retention on frost damage in cereals; frost responses to soil inversion by way of mouldboard ploughs and rotary spaders; the influence of crop canopy architecture on frost; and the role of grazing in delaying flowering and exposure to frost... Crop canopies have been manipulated in a variety of ways, including skip rows to create different bandwidths of crop canopies and various nitrogen and seeding rates to create different biomasses to evaluate their impact on the severity and duration of frost...
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