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stored water

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Catalogue: GRDC Factsheets
a realistic understanding of the soil's capacity to store water will improve decisions about the potential return on crop inputs and other management practices... improving water use efficiency may require effort over several years to improve the soil's ability to capture and store water, or to make stored water available to plants... Water use efficiency (WUE) is a measure of a crop's capacity to convert water into plant biomass or grain...
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Catalogue: GRDC Factsheets
a realistic understanding of the soil's capacity to store water will improve decisions about the potential return on crop inputs and other management practices... improving water use efficiency may require effort over several years to improve the soil's ability to capture and store water, or to make stored water available to plants... Water use efficiency (WUE) is a measure of a crop's capacity to convert water into plant biomass or grain...
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Catalogue: GRDC Factsheets
a realistic understanding of the soil's capacity to store water will improve decisions about the potential return on crop inputs and other management practices... improving water use efficiency may require effort over several years to improve the soil's ability to capture and store water, or to make stored water available to plants... Water use efficiency (WUE) is a measure of a crop's capacity to convert water into plant biomass or grain...
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Catalogue: GRDC Updates
My aim is not to provide a recipe for planting summer crops in north-western NSW, but to provide some insight and tools to assist in the decision making process... Table 1 shows that when planting between October and the 1 st of January, there is an 80% chance of receiving at least 110-120mm of in-crop rainfall this calculation does not consider the impact of rainfall timing on crop demand... Figure 3 supports the back of the envelope calculation suggesting the 150mm of starting water is the minimum required to achieve a 3t yield 5 years in 10 while if you have 200mm of stored water the probabilities improve to 6-8 years in 10...
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Catalogue: GRDC Media
Research funded by the Grains Research and Development Corporation (GRDC) shows that early control of fallow weeds can lead to significant increases in the levels of stored plant-available water and increased availability of nutrients (especially nitrogen), benefiting crop yield and grain quality... Mr Cameron, who co-authored the GRDC's Summer Fallow Weed Management manual, said soil water saved by killing fallow weeds was often stored deep in the profile and its value is often far higher than that of in-crop rainfall... In the right soil, deep stored soil water can have a water use efficiency of up to 60 kilograms of grain/millimetre of stored water...
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Catalogue: GRDC Media
Research funded by the Grains Research and Development Corporation (GRDC) shows that early control of fallow weeds can lead to significant increases in the levels of stored plant-available water and increased availability of nutrients (especially nitrogen), benefiting crop yield and grain quality... Mr Cameron, who co-authored the GRDC's Summer Fallow Weed Management manual, said soil water saved by killing fallow weeds was often stored deep in the profile and its value is often far higher than that of in-crop rainfall... In the right soil, deep stored soil water can have a water use efficiency of up to 60 kilograms of grain/millimetre of stored water...
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Catalogue: GRDC Updates
Figure 1: Locations of the key centres used in the simulation study... In the update we report on a detailed simulation study that explored the effects of row configuration on production risk in sorghum using the 100+ years of historical climate data available... Results associated with east-west transects in CQ (Biloela-Emerald-Longreach), SQ (Dalby-Miles-Roma-Mitchell-Augathella), and NNSW (Moree-Walgett-Bourke) are reported ...
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Catalogue: GRDC Updates (West)
The decline in profitability of the high rainfall farm is driven by declining terms of trade rather than the yield reductions under predicted climate change... Farmers and advisors still require a simple method to estimate yield potential using a simple spreadsheet or 'back of the envelope' type calculations... The soil moisture values calculated by STIN XL for sowing dates later than 1 April were seen as an underestimate...
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Catalogue: GRDC Updates
Sowing time is a major determinant of crop yield because, in partnership with the variety chosen, it determines the timing of key development stages and the environmental stresses at these key stages... Changes in crop management have also given farmers more flexibility in sowing time... The results show that decisions about sowing time and maturity type need not be altered according to the amount of stored water at sowing time...
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Catalogue: GRDC Final Reports
Left uncontrolled, weed flushes impact on soil water storage... The effects of different summer fallow management practices on soil water storage were studied using a replicated field trial with five treatments: (1) stubble harvested for straw with strict weed control, (2) stubble left standing after harvest with or (3) without weed control, and (4) stubble flattened (as with Coolamon harrow) with or (5) without weed control... We used a simulation study to generate a range of different starting subsoil water contents by changing the simulated weed management during the summer fallow...
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