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soil datum

Catalogue: Ground Cover
"Growers need to know who controls their data: if individual or aggregated data will be shared with other companies, or if it could be accessed by government agencies, or even used to speculate the commodities market," Ms Thatcher said... Ms Thatcher said the AFBF was first approached by growers two years ago, querying contracts that gave companies access to input and yield-monitoring data... The AFBF also produced a 'read before you sign' guide, outlining what growers should ask including what information is collected, what control growers have over data and if the company will notify them of policy changes...
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Catalogue: Ground Cover
"Growers need to know who controls their data: if individual or aggregated data will be shared with other companies, or if it could be accessed by government agencies, or even used to speculate the commodities market," Ms Thatcher said... Ms Thatcher said the AFBF was first approached by growers two years ago, querying contracts that gave companies access to input and yield-monitoring data... The AFBF also produced a 'read before you sign' guide, outlining what growers should ask including what information is collected, what control growers have over data and if the company will notify them of policy changes...
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Catalogue: GRDC Updates
Surface application of ammonium sulphate fertiliser on alkaline cropping soils of northwest NSW poses a high risk of volatilisation loss, particularly if there is calcium carbonate (lime) at the surface... We are currently testing a range of surface soil samples from across northwest NSW and will present some results of these in the talk... Following this we will assess volatilisation loss potential at a selection of these soils to gauge the potential for losses in typical cropping situations...
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Catalogue: GRDC Updates
We first determined (1) the amount of P applied as fertilisers to crops in WA and (2) the amount of P removed in harvested grains by multiplying grain yield by the P content of the grains... For example, if we removed 5 kg P/ha in the form of P contained in grains and we applied 10 kg P/ha as fertiliser, then the P balance efficiency is 5/10x100 = 50 %. P balance efficiency allows us to assess along with soil test P data if we are building-up, maintaining or depleting soil P... We estimate that about 87% of the wheat paddock soil samples examined are no longer P deficient (exceed their critical values)...
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Catalogue: Ground Cover
Rob McCreath has been testing a prototype of the new soil moisture app on his Darling Downs property... Weather records can be updated daily over the internet soil water can be estimated through the app without having to go into the field... If a grower or agronomist wants to know how much water is likely to be in the soil on any given day, the app makes a calculation based on weather and soil data, including any data provided by existing soil sensors...
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Catalogue: Ground Cover
Rob McCreath has been testing a prototype of the new soil moisture app on his Darling Downs property... Weather records can be updated daily over the internet soil water can be estimated through the app without having to go into the field... If a grower or agronomist wants to know how much water is likely to be in the soil on any given day, the app makes a calculation based on weather and soil data, including any data provided by existing soil sensors...
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Catalogue: GRDC Updates
Soil quality is currently being measured in grain-producing areas across Australia... A selection of the biological, chemical and physical indicators of soil quality measured as part of the Monitoring Program, are shown in Table 1, which also lists how each indicator can be related to soil quality and production... The information on the website is provided in a number of formats including a 'traffic light' snap shot where each measure of soil quality is partitioned into ranges that are assigned green, amber and red status...
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Catalogue: GRDC Final Reports
Whilst managing the water balance of crops is one of the most critical issues in Australian dryland agriculture, there has been limited information available to farm managers that allows the productive capacity of soils to be considered when making crop management decisions... Evaluation of project activities showed that whilst growers were interested in soil water management and were prepared to use Yield Prophet as a tool for in-season crop management, they generally relied on their consultants to undertake the pre-season monitoring and input of data... Whilst the project has had a major influence in promoting the value of soil water in management, there is an on-going need for higher level training as well as the development of increased capacity in soil characterisation and monitoring through the exploration and adoption of new technologies...
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Catalogue: GRDC Updates
Closing the exploitable yield gap (80% of Yw - Ya) would increase yields by 1.2 t/ha to raise the regional average to 2.9 t/ha... There is a strong correlation (r 2 = 0.72) between Yw and Yg (Figure 5) indicating that across all locations and seasons, the higher the yield potential the higher the yield gap... Average annual values of Ya, Yw, Yg and Y % (figure 7) per SLA show that some SLAs have larger yield gaps than others...
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