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Paddock rotation and history

Catalogue: GRDC Media
Maurie Street, Grain Orana Alliance (GOA) chief executive officer says growers who have their winter cropping program planned and ready to go will benefit if they are able to use a potentially short planting window to best effect... "The key to a successful planting this year will be being prepared across the farming system by putting some thought into nutritional requirements, a planting program taking into account wetter paddocks and crop selection," Mr Street said... Mr Street said there was likely to be big canola planting in the central west this year due to depressed wheat prices...
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Catalogue: Ground Cover
Crop sequence trial demonstrates break crop profits.. The effect of rotation is clear - the canola/wheat/wheat rotation (left) had 31 kilograms of nitrogen per hectare applied, while the vetch/canola/wheat rotation (right) had 9kg of N/ha applied... Rotations in the Mallee that have a break crop for two consecutive years are proving more profitable than rotations with only one break crop...
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Catalogue: Ground Cover
Consecutive cereal crops can reduce yields.. Dr Roger Lawes from CSIRO and Associate Professor Michael Renton from the University of Western Australia (UWA) developed the model as part of a project funded by the GRDC and the Department of Agriculture and Food, WA (DAFWA)... Dr Lawes says LUSO indicates that growing two consecutive cereal crops without a break crop can cause yield losses of between 10 and 20 per cent, while three or more such crops result in even higher yield penalties...
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Catalogue: Ground Cover
A project is underway in southern NSW to help growers put broadleaf species into crop rotations to improve grain production and profitability... NSW DPI research scientist Dr Guangdi Li, based at Wagga Wagga Agricultural Institute, says each of the grower groups is responsible for coordinating large-scale studies to compare crop performance with and without broadleaf species, while researchers concentrate on the benefits of break crops on nitrogen nutrition, disease break and weeds aspects... Dr Li says the project aims to identify whether profitable broadleaf cropping rotations are available as alternatives to continuous cereal cropping, and to provide guidelines for grain growers and their advisers on when and where to include what break crops to achieve the best outcome...
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Catalogue: GRDC Updates
Wheat yield 1 year, 2 years and 3 years after break, showing benefit of breaks compared to continuous wheat (dotted 1:1 line)... Cumulative yield of wheat over 3 years after breaks showing benefit of breaks compared to continuous wheat (1:1 line)... Four year cumulative gross margins have been calculated for each soil type x crop sequence combination where breaks were grown in 2009 (Table 2)...
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Catalogue: Ground Cover
Brome grass needs multi-pronged attack.. When herbicides are put under pressure resistant weeds are quickly selected for, such as this population of brome grass... Break crops need to be employed with other management tools including: high seeding rates at sowing for improved competition with brome grass plants; effective herbicide choice with correct rates, droplet size and timing; regular resistance testing if herbicide failure is suspected; retaining or sourcing clean seed for future use; and monitoring brome grass levels in all paddocks while planning future use...
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Catalogue: GRDC Media
A field day inspecting various break options at Minnipa in 2012... A major GRDC-funded project has assessed the profitability of many different break options in five different low rainfall sites across southern Australia over the last four years... Grassy weed control followed a similar trend, though it should be noted that while a one year vetch hay break appeared to give strong weed control (third point from the right), this effect was short lived, and did not persist into 2014...
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Catalogue: Ground Cover
Crop diversity lifts profitability.. Pastures, pulses and oilseed crops not only provide solutions for disease, weed and nitrogen issues in cereal programs - they can also boost your bottom line... This 'break-crop effect' often extends to the second wheat crop (but rarely to a third except under dry conditions), reinforcing the need to consider the economics of break crops across the whole sequence, not in a single year...
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Catalogue: Ground Cover
Consecutive cereal crops can reduce yields.. Dr Roger Lawes from CSIRO and Associate Professor Michael Renton from the University of Western Australia (UWA) developed the model as part of a project funded by the GRDC and the Department of Agriculture and Food, WA (DAFWA)... Dr Lawes says LUSO indicates that growing two consecutive cereal crops without a break crop can cause yield losses of between 10 and 20 per cent, while three or more such crops result in even higher yield penalties...
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Catalogue: GRDC Media
The Grains Research and Development Corporation (GRDC) is on track to continue its substantial investment into northern grains research following last week's release of the GRDC External Investment Plan 2015-16 ... Key areas that will attract GRDC funding include short-term Grower Solution Group (GSG) investments targeting important localised research, development and extension (RD&E) issues; agribusiness trial extension networks; research and farm business updates; and an extensive range of agronomic and farming systems management projects... "We will continue to invest in areas that can help drive profitability improvements for northern growers like soil and crop nutrition, weed seed and herbicide resistance management, break crops, crop rotations, pests, disease, nematodes, frost management and regional research capacity...
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