Organic and clay amendments to improve the productivity of sandy soils – SA, WA, VIC, NSW (Webpage)
This Soil Cooperative Research Centre (CRC) webpage summarises a factsheet that explores how sandy soil productivity can be improved using organic and clay amendments. The research project, lead by Professor Richard Bell, found that amendments such as zeolite and hydrotalcite helped to retain water and minimise nutrient loss via leaching. Composts can also improve water retention but they may lead to significant nutrient loss since sandy soils still lack the ability to hold onto those added nutrients. The team began by updating the national map of sandy soils in agricultural regions, accessible through the Visualising Australasia’s Soils portal. They developed the sandy soil suitability assessment framework and then conducted a meta-analysis of field responses to sandy soil amendments. Glasshouse pot trials were used to investigate the effects of adding zeolite and compost. These results suggest zeolite is a reliable amendment for reducing nutrient loss, while the effectiveness of compost depends on both particle size and the specific nutrient. The study found that amendment placement was also important. These findings apply to sandy soils in South Australia, Western Australia, Victoria and New South Wales.#
This is a carefully curated database of important soil resources. The data base is not exhaustive but rather a library of the resources we believe are the most useful for the audience. Each resource has been added after careful consideration against our selection criteria, including but not limited to its scientific validity, accessibility, and readability. The library generally does not include most academic research papers but may include some open-source papers written in accessible English.
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SSA reminds users that these resources are a guide only. Our understanding of soil science is improving continuously so it is important to check the suitability of the information for your purpose with an appropriately qualified professional such as a Registered Soil Professional or a Certified Professional Soil ScientistÂ
