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crop water use

Catalogue: GRDC Research Summaries
Biomass production by wheat crops can often be high, but yields are well below potential... In combination with the high rainfall, this leads to a low WUE for grain production... Wheat and canola are the two major crops in the HRZ of WA. Wheat crops in the area have considerable potential driven by the higher rainfall and longer growing season relative to traditional cropping areas...
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Catalogue: Ground Cover
Zones based on water use efficiency and variable rate inputs are helping Peter Kuhlmann remain viable on his low-rainfall property near Ceduna, South Australia... At the SPAA Expo in South Australia in February, Peter explained the farming practices he uses to collect and conserve the limited rainfall received by his property... One tool to help maximise crop water use and minimise water loss is stubble retention, using: no-till with knife points - tillage beneath the row is used to help reduce the root disease Rhizoctonia; presswheels; wider row spacing - less crop competiton and allows inter-row sowing to improve seedling establishment due to protection from wind; and early and dry sowing with good seed and nutrient placement...
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Catalogue: Ground Cover
Zones based on water use efficiency and variable rate inputs are helping Peter Kuhlmann remain viable on his low-rainfall property near Ceduna, South Australia... At the SPAA Expo in South Australia in February, Peter explained the farming practices he uses to collect and conserve the limited rainfall received by his property... One tool to help maximise crop water use and minimise water loss is stubble retention, using: no-till with knife points - tillage beneath the row is used to help reduce the root disease Rhizoctonia; presswheels; wider row spacing - less crop competiton and allows inter-row sowing to improve seedling establishment due to protection from wind; and early and dry sowing with good seed and nutrient placement...
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Catalogue: GRDC Media
A young scientist who has been highly influential in driving improvements in the productivity and sustainability of mixed farming systems throughout Australia has been officially recognised for his efforts and achievements in communicating the outcomes of research... The Seed of Light award was presented to Dr Hunt at the GRDC Grains Research Update in Adelaide this week... In 2009, Dr Hunt moved to CSIRO Agriculture in Canberra where his primary role was co-ordinator of the GRDC's five-year $17.5 million National Water Use Efficiency Initiative, providing scientific advice to 16 regional agronomic research teams investigating new agronomic innovations to improve productivity and water use efficiency of mixed farming systems in Australia...
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Catalogue: GRDC Media
A young scientist who has been highly influential in driving improvements in the productivity and sustainability of mixed farming systems throughout Australia has been officially recognised for his efforts and achievements in communicating the outcomes of research... The Seed of Light award was presented to Dr Hunt at the GRDC Grains Research Update in Adelaide this week... In 2009, Dr Hunt moved to CSIRO Agriculture in Canberra where his primary role was co-ordinator of the GRDC's five-year $17.5 million National Water Use Efficiency Initiative, providing scientific advice to 16 regional agronomic research teams investigating new agronomic innovations to improve productivity and water use efficiency of mixed farming systems in Australia...
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Catalogue: GRDC Final Reports
Through the project, and other work by the Liebe Group, growers were able to review their fertiliser use, understand plant nutrition and recognise the need to protect gross margins and reduce their financial risks in a variable climate... Through previous research conducted in the area, there was an understanding that growers could improve their systems by optimising time of sowing, managing soil types more effectively, increasing their understanding of crop N use and better understanding soil water dynamics to make more informed and flexible decisions as seasons unfold... The short term objective of the project was to deliver quality information to growers and industry about adaptation options...
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Catalogue: Ground Cover
Six years ago, the GRDC put out a challenge to growers and researchers to work together to tackle one of the fundamental constraints on grain production in this country - better use of plant-available water... Past studies have shown that our industry has only been achieving half of the yield potential from any given season's rainfall - in other words, it generally has not been lack of rainfall that has been holding us back, but the efficiency with which rainfall is captured, stored and used by crops... The concerted effort has delivered new, and more clearly defined, management approaches - to making better use of summer rain via stubble and tillage management and weed control, to crop rotations, in-crop spatial variability and other in-crop decisions, such as nitrogen inputs and foliar spray options...
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Catalogue: GRDC Research Summaries
Biomass production by wheat crops can often be high, but yields are well below potential... Wheat and canola are the two major crops in the HRZ of WA. Wheat crops in the area have considerable potential driven by the higher rainfall and longer growing season relative to traditional cropping areas... We aim to quantify the impact of temporal variation in N supply on canopy development, crop water use, development of grain yield, and WUE of wheat crops in the HRZ. Cropping in the HRZ has been dominated by cereals...
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Catalogue: GRDC Updates
Take home message Wide and skip row configurations can improve sorghum grain yield in dry seasons by limiting crop water use prior to anthesis.. In some seasons, more soil water may be left at harvest in wide and skip row configurations than in narrow or solid row configurations and this may benefit following crops Uneven stubble distribution following wide and skip-row sorghum crops can lead to reduced fallow efficiency and difficulties in establishing the following crop... Figure 1: Effect of row configuration on pre anthesis water use and biomass at flowering for sorghum at Dalby (Source: Whopper Cropper: Sorghum at Dalby, planted 15 Oct, PAWC = 150 mm, 2/3 full at planting)..
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Catalogue: GRDC Publications
Assuming a single soil evaporation parameter to benchmark water use efficiency is a very coarse simplification, and possibly the main source of error in estimating water use efficiency using the French and Schultz approach... Selecting a variety to match to a time of sowing so that flowering occurs during the flowering window is an important management decision to improve yield and water use efficiency... The effect of sowing rate on water use efficiency in winter cereals is strongly influenced by the amount of soil moisture leading into spring...
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