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subsurface soil

Catalogue: GRDC Media
Research has revealed that many Western Australian grain growers may be unwittingly sowing break crops into paddocks with subsurface acidity levels that will limit the productivity of these crops... He says many paddocks sown to other break crops are also likely to have pH levels that limit crop yields... Mr Parker says it is probable that many growers are unknowingly sowing break crops in paddocks with an unmeasured subsurface pH that is below critical levels, limiting the yield potential of these crops...
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Catalogue: GRDC Media
Growers praised for efforts to preserve healthy soils.. On the eve of World Soil Day (December 5), Grains Research and Development Corporation (GRDC) Managing Director John Harvey says it is timely to acknowledge the grains industry's efforts in ensuring the long-term fertility of soils, necessary for essential food production... Scientists involved in the Soil Biology Initiative agree that the program is making considerable progress in understanding the composition of the living fraction of soils which support crop production, and how growers can best manage soils to maximise nutrient capture and defend against crop disease...
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Catalogue: Ground Cover
Image of a soil pit showing lime injection.. Soil pit showing where lime (stained purple) has been injected into the soil... The trial was established in 2001 at South Bodallin in the eastern WA wheatbelt when limesand was injected to a depth of 25 to 30cm, using air to blow the lime down behind a set of deep-ripping tynes...
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Catalogue: GRDC Updates (West)
" Taking soil acidity seriously - results of grower surveys Chris Gazey, Department of Agriculture and Food, Northam, Western Australia James Fisher, Desiree Futures, York, Western Australia Joel Andrew, Precision SoilTech, Belmont, Western Australia KEYMESSAGESFORGROWERS Aim to apply sufficient agricultural lime to achieve the target pH Caof 5.5 in the surface and 4.8 in the subsurface as an integral part of farming practice-this will ensure that soil acidity is removed as a constraint to most farming systems in broadacre WA wheatbelt... Work from facts, don't guess-measure your soil's pH profile by soil testing 0-10, 10-20 and 20-30 cm layers... Improve returns from liming by developing a liming programme to ensure that lime is applied at the right rate in the right place and at the right time...
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Catalogue: GRDC Media
Research has revealed that many Western Australian grain growers may be unwittingly sowing break crops into paddocks with subsurface acidity levels that will limit the productivity of these crops... Mr Parker says it is probable that many growers are unknowingly sowing break crops in paddocks with an unmeasured subsurface pH that is below critical levels, limiting the yield potential of these crops... More information about research into break crops and rotations can be found at the GRDC Break Crop Research Hot Topic at www.grdc.com.au/BreakCropResearch-West ...
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