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moisture

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Catalogue: GRDC Media
WATERLOGGING drained about 80 kilograms a hectare of nitrogen from soils in parts of southern New South Wales in autumn last year... This caused lower yields and lower protein in crops harvested, which has driven many growers to want to know more about last year's N story and whether it will have any implications for this year... The level of soil total N is extremely sensitive to moisture - in lower rainfall areas, changes in total soil N are equal to the N removed by crops but in wetter areas, denitrification means more soil N is lost than crops remove...
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Catalogue: Ground Cover
Merredin grain grower Mick Caughey has fine-tuned his summer weed management to conserve soil moisture... This includes retaining stubble and spraying summer weeds (to conserve stored soil moisture) and using precision-farming principles to better care for the soil... Other on-farm changes to deal with a changing climate include a timely approach to spraying summer weeds using a contract sprayer...
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Catalogue: GRDC Media
WATERLOGGING drained about 80 kilograms a hectare of nitrogen from soils in parts of southern New South Wales in autumn last year... This caused lower yields and lower protein in crops harvested, which has driven many growers to want to know more about last year's N story and whether it will have any implications for this year... The level of soil total N is extremely sensitive to moisture - in lower rainfall areas, changes in total soil N are equal to the N removed by crops but in wetter areas, denitrification means more soil N is lost than crops remove...
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Catalogue: GRDC Media
How close a crop is to running out of available soil moisture... "PAWC is the difference between the drained upper limit (DUL), also known as the field capacity, which is the highest moisture content the soil can store before water runs off or drains away, and the crop lower limit (CLL), which is the lowest moisture content that plant roots can extract from soil," he said... "If soil moisture is above the DUL, no more water can be held in the soil so additional rain or irrigation will not be of benefit and can lead to waterlogging and surface runoff...
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Catalogue: GRDC Media
How close a crop is to running out of available soil moisture... "PAWC is the difference between the drained upper limit (DUL), also known as the field capacity, which is the highest moisture content the soil can store before water runs off or drains away, and the crop lower limit (CLL), which is the lowest moisture content that plant roots can extract from soil," he said... "If soil moisture is above the DUL, no more water can be held in the soil so additional rain or irrigation will not be of benefit and can lead to waterlogging and surface runoff...
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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 Media
Results from technology that measures soil moisture across the Western Australian grainbelt indicates that nitrogen fertiliser 'top-ups' applied in coming weeks could have variable yield benefits, depending on location... "Analysis of sites hosting new soil moisture probes suggests that potential benefits range from nil to more than 0.5 tonnes per hectare," Precision Agronomics Australia's Frank D'Emden said... " the modelling suggested that responses to top-up nitrogen ranged from nil at the Beacon, Bonnie Rock, Southern Cross and Merredin sites - where soil moisture is marginal - to at least 0.5t/ha at the Coomberdale, Bindi Bindi, Dowerin, Lake Grace and Jerramungup sites - where soil moisture levels are reasonable," he said...
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Catalogue: GRDC Updates
To give us a better understanding of how much water was remaining in the soil if we wanted to undertake forward marketing decisions for our crops... We wanted a tool to give us a better understanding of how much moisture we had remaining in the soil profile (and where it was located) before making a decision to spread N. The soil moisture probes give us this ability... Following our experience with forward marketing we wanted a better decision tool to help us decide if we had enough moisture to grow a crop and make forward sales and probably more importantly following 2007, know when the crop is about to run out of moisture and if options such as purchasing grain contracts back needs to be carried out...
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Catalogue: GRDC YouTube channel
" GRDC Grains Research Updates 22-23 February 2012, Southern Region, Adelaide SA. Kym I'Anson 19 September 2013 Grain producer Kym I'Anson talks about why monitoring moisture is important, with particular emphasis on soil moisture probes and their effect on management... An accurate measurement of soil water is a valuable tool when estimating yield... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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