https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34454 Wed 13 Mar 2019 13:12:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46503 Wed 07 Feb 2024 16:39:31 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33758 3 showed higher correlations (r = 0.91 and 0.96, respectively) with plant K uptake values. Both the chemical and biological methods were able to extract only a portion (12–20%) of total K present in the mineral powder. The results indicated that the mineral powder could be used as a slow release K fertilizer in soils. Further studies in long term applications with exhaustive crops under field conditions are needed to assess its feasibility as a source of K in agriculture.]]> Thu 30 Jan 2020 11:19:11 AEDT ]]>