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Catalogue: GRDC Updates (West)
year 1 )3 a h / t2.5 ( d l e i2 y n i a r1.5 g 1 nil gypsum gypsum rain limited potential 0.5.. Cascade soils after 20 years conductivity profiles EC 0.5 1 1.5.. use 'pre-washed' sodium confirm likely response adsorption ratio to gypsum works in subsoils as well as topsoils gypsum moves to depth rapidly and is effective for many years (not winter grazing) Questions?..
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Catalogue: GRDC Media
Subsoil manuring comes of age in HRZ.. "What we end up getting after subsoil manuring is a larger bucket size and soil capable of holding three times its original capacity of plant-available water, which can be stored deep in the profile to be used in the spring grain-fill period achieving much higher water use efficiency.".. While results are still inconclusive as to which manure or organic matter might be best to use, Dr Peries says they do need to find a material that is more abundantly available should the popularity of subsoil manuring increase...
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Catalogue: GRDC Publications
Soil organic matter contributes to a range of biological, chemical and physical properties of soil and is essential for soil health... Soils rarely reach their theoretical potential for organic matter storage (see Figure 1.7)... In soils with low clay content the amount of humus and resistant soil organic matter is increasingly important to nutrient exchange because its large surface area gathers (adsorbs) cations from the soil solution, holding nutrients that would otherwise leach...
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Catalogue: GRDC Publications
Soil organic carbon makes up about 58 per cent of the mass of organic matter and is usually reported in a soil analysis report as the concentration (i.e. per cent) of organic carbon in soil (see Chapter 1 for more detail)... If a soil has a significant amount of gravel or stone material, this fraction is removed before analysis with the final soil carbon or nutrient assessment being only representative of the mineral component of the remaining soil... Understanding how organic matter cycles through the soil and what drives its accumulation and loss is critical to maintaining it at optimal levels within agricultural systems...
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Catalogue: GRDC Updates (North)
Quirindi Grains Research Update Nutrition on black soil.. Grains Research Update - Quirindi August 2002 there is drought prior to flowering and a low number of kernels are set then the kernels which are produced will tend to be larger... In summary controlled traffic and conservation tillage will assist in protecting the surface of the soil and will maximise the activity of soil animals, increasing the infiltration and the water holding capacity of the soil...
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Catalogue: GRDC Updates (South)
Quirindi Grains Research Update Nutrition on black soil.. Grains Research Update - Quirindi August 2002 there is drought prior to flowering and a low number of kernels are set then the kernels which are produced will tend to be larger... In summary controlled traffic and conservation tillage will assist in protecting the surface of the soil and will maximise the activity of soil animals, increasing the infiltration and the water holding capacity of the soil...
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Catalogue: GRDC Updates (North)
Delaying the onset of stripe rust within a crop is the key to significantly reducing the risk of yield loss to this disease in 2005... Stripe rust specific seed treatments are not required and crops should simply be monitored early for the development of stripe rust and a foliar fungicide applied if severe early infection warrants it... With the exception of the 2002 drought year, yields were always higher in the LB treatment (Figure 3)...
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Catalogue: GRDC Updates (South)
Delaying the onset of stripe rust within a crop is the key to significantly reducing the risk of yield loss to this disease in 2005... Stripe rust specific seed treatments are not required and crops should simply be monitored early for the development of stripe rust and a foliar fungicide applied if severe early infection warrants it... With the exception of the 2002 drought year, yields were always higher in the LB treatment (Figure 3)...
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Catalogue: GRDC Updates (North)
Trangie Grains Research Update Precision farming, controlled traffic & farming systems.. Grains Research Update - Trangie August 2002 of weathering of Australian soils, resulting in a lower soluble mineral concentration in the soil water... Other issues Given the above results from our demonstration sites and issues raised concerning direct seeding and controlled traffic in the context of conservation farming, we believe more work still needs to be conducted to enable us and the machinery / adviser industry to more adequately offer advice to farmers on machinery / farming systems options...
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Catalogue: GRDC Updates (South)
Trangie Grains Research Update Precision farming, controlled traffic & farming systems.. Grains Research Update - Trangie August 2002 of weathering of Australian soils, resulting in a lower soluble mineral concentration in the soil water... Other issues Given the above results from our demonstration sites and issues raised concerning direct seeding and controlled traffic in the context of conservation farming, we believe more work still needs to be conducted to enable us and the machinery / adviser industry to more adequately offer advice to farmers on machinery / farming systems options...
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