You are here

soil moisture level

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...
Related categories:
Catalogue: GRDC Media
"Currently only a small proportion of growers test soils to this depth, but it is necessary to provide the information they need to help them decide whether to apply lime before or after mouldboard ploughing or spading," he said... "After mouldboard ploughing or spading, but before seeding, growers should ideally go back and sample soils a second time to a depth of 20cm to help them assess soil nutrition requirements - particularly for phosphorus and potassium... "If growers do not have enough time to do nutrient testing between mouldboard ploughing or spading, and seeding, they need to make sure they test for nutrient levels, as well as pH, when soil testing the first time."..
Related categories:
Catalogue: GRDC Updates
Have a well thought out plan in regard to nitrogen application and amend it as the season unfolds... With the ability to measure starting soil moisture and nitrogen levels and a variety of ways in which we can apply nitrogen to a crop, planning for nitrogen input can start before a seed has hit the ground... A crop should be assessed for disease or other nutrient deficiencies prior to spreading additional nitrogen...
Related categories:
Catalogue: GRDC Final Reports
If opening rains arrive early in the season, it may be advisable to sow the crop seven to 10 days after these rains - as results show that microbial activity remains high at this time, helping in suppression of the disease... Results of our experiments conducted during this project will help in understanding the behaviour of R. solani AG-8 under different soil environments and its interaction with rate of root growth and microbial activity in the development of disease... Our results will also help in the prediction of disease in a season on basis of timing and amount of opening rains...
Related categories:
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...
Related categories:
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...
Related categories:
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...
Related categories:
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...
Related categories:
Catalogue: GRDC Updates
Soil moisture probes like any other component of precision ag can help people confirm decisions or take decision making to another level... Management decisions determining crop type, inputs such as nutrition and disease control are the ones identified where knowledge of deep soil moisture levels may assist with risk management... The objective is to demonstrate the capability of soil moisture monitoring technology with remote communication systems to display soil moisture data from key cropping regions across Victoria and determine how this information can be used by both agronomist and farmers...
Related categories: