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soil acidity research

Catalogue: GRDC Media
A study into the use of instantaneous pH probes inserted directly into moist soil to measure pH has found they are capable of making accurate measurements and are cheaper than traditionally used soil tests when many samples are required across a paddock... Soil pH is typically measured in WA by taking a soil sample and sending it to a laboratory where the soil is mixed in a solution of 1:5 CaCl2 and measured with a glass probe... But instantaneous pH probes provide the potential to relatively quickly and cheaply measure soil pH at many sites across a paddock, allowing pH and lime application maps to be drawn...
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Catalogue: GRDC Media
But scientists such as the Department of Agriculture and Food's (DAFWA) Chris Gazey say that despite these big steps in the right direction, 2.5 million tonnes annually is needed over the next ten years to treat existing and ongoing soil acidity, which costs WA agriculture more than $500 million per year in lost productivity... Mr Gazey, who recently completed a Caring for our Country soil acidity research project, says WA soils are continuing to acidify, with mapping of the State's agricultural soils highlighting the severity and extent of soil acidity, including subsurface acidity... Mr Gazey says other evidence supporting the need for sustained efforts to address soil acidity includes re-evaluation of a 1994 trial site in a Mingenew paddock showing that lime rates previously considered adequate do not ameliorate soil pH at depth...
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Catalogue: GRDC Media
But scientists such as the Department of Agriculture and Food's (DAFWA) Chris Gazey say that despite these big steps in the right direction, 2.5 million tonnes annually is needed over the next ten years to treat existing and ongoing soil acidity, which costs WA agriculture more than $500 million per year in lost productivity... Mr Gazey, who recently completed a Caring for our Country soil acidity research project, says WA soils are continuing to acidify, with mapping of the State's agricultural soils highlighting the severity and extent of soil acidity, including subsurface acidity... Mr Gazey says other evidence supporting the need for sustained efforts to address soil acidity includes re-evaluation of a 1994 trial site in a Mingenew paddock showing that lime rates previously considered adequate do not ameliorate soil pH at depth...
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