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Catalogue: Online Farm Trials
To demonstrate what clay rate is required for claying to be successful and to look at how this is affected by the degree of clay incorporation... Key messages - As the clay rate increased with shallow incorporation using offset discs the yield benefit tends to decline (Table 1), with essentially no difference in yields at the two highest rates of 360 and 450 t clay/ha... - Trial confirms expectation that the degree of incorporation needs to be commensurate with the rate of clay applied - determining this relationship based on the clay content of the subsoil being spread and the level of incorporation to be used is likely to be the key to more reliable claying success...
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Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
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Catalogue: GRDC Publications
Overall, soil CEC and SOC content was greatest in the 0.2 and 0.2-2 m fraction, indicating that size, and probably type, of SOM influenced CEC... Kaiser et al. (2003) found that soils with a high content of black carbon showed increased sorption ability compared with plant- and microbial-derived SOM... Addition of organic amendments can increase P availability to plants by decreasing the P adsorption capacity of soils...
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Catalogue: GRDC Media
Remediating sandy soils with clay-rich subsoil can often generate substantial crop yield improvements, providing appropriate methods are followed... The Grains Research and Development Corporation (GRDC) has just produced a new publication in which eight growers - including three from WA - share their stories about their use of clay in improving their soils and productivity... According to the GRDC, the millions of hectares of deep sand or sand over clay-rich subsoils which are used for agricultural production, mainly in SA and WA, present a range of challenges due to their poor water-holding capacity, inherent low fertility, extremes of pH, low levels of microbial activity and vulnerability to wind erosion...
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Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
Related categories:
Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
Related categories:
Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
Related categories:
Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
Related categories:
Catalogue: GRDC Factsheets
Clay spreading or delving can significantly improve yields of sandy soils but it is vital that the process is performed correctly... Poor root exploration into the subsoil caused by a distinct separation between the spread/delved soil and the layer below and by not addressing fertility and low plant available water in bleached subsoils... The clay content of a soil can be estimated by taking a handful of the soil, adding water and working it into a ball until it is smooth, and then squeezing it out into a ribbon about 2-3 millimetres thick...
Related categories:
Catalogue: GRDC Media
New resource delves into the issue of claying Remediating sandy soils with clay-rich subsoil can generate substantial crop yield improvements, provided that appropriate methods are followed... The Grains Research and Development Corporation (GRDC) has just produced a new publication in which eight growers - including four from SA and one from Victoria - share their stories about their use of clay in improving their soils and productivity... It is critical that growers plan in detail each stage of the process and follow the best practice. "..
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