Table 2.8.1 Resource status and trends summary for nutrient status (phosphorus) Ag Soil Ag Soil Zone Summary Condition Trend Confidence in Confidence in Zone condition trend number 1 Mid West Soil P fertility well in excess of Well in excess Stable Limited evidence Limited evidence optimal range. Ceasing P application or limited or limited would see P levels very slowly consensus consensus decrease to optimal levels. 2 Mullewa to Soil P fertility well in excess of Well in excess Stable Limited evidence Limited evidence Morawa optimal Ceasing P application or limited or limited would see P levels very slowly consensus consensus decrease to optimal levels. 3 West Midlands Soil P fertility in excess of optimal Excess Stable Limited evidence Limited evidence This could change to well in or limited or limited excess with continued P application; consensus consensus however, ceasing P application would see P levels slowly decrease to optimal levels. 4 Central Northern Soil P fertility in excess of optimal Excess Stable Limited evidence Limited evidence Wheatbelt range. This could change to well in or limited or limited excess with continued P application; consensus consensus however, ceasing P application would see P levels slowly decrease to optimal levels. 5 Swan to Scott Soil P fertility in excess of optimal Excess Stable Limited evidence Limited evidence Coastal Plains range. This could change to well in or limited or limited excess with continued P application; consensus consensus however, ceasing P application would see P levels slowly decrease to optimal levels. 6 Darling Range to Soil P fertility in excess of optimal Excess Stable Limited evidence Limited evidence South Coast range. This could change to well in or limited or limited excess with continued P application; consensus consensus however, ceasing P application would see P levels very slowly decrease to optimal levels.
Table 2.8.1 Resource status and trends summary for nutrient status (phosphorus) Ag Soil Zone number Ag Soil Zone Summary Condition Trend Confidence in condition Confidence in trend 1 Mid West Soil P fertility well in excess of optimal range. Ceasing P application would see P levels very slowly decrease to optimal levels. Well in excess Stable Limited evidence or limited consensus Limited evidence or limited consensus 2 Mullewa to Morawa Soil P fertility well in excess of optimal Ceasing P application would see P levels very slowly decrease to optimal levels. Well in excess Stable Limited evidence or limited consensus Limited evidence or limited consensus 3 West Midlands Soil P fertility in excess of optimal This could change to well in excess with continued P application; however, ceasing P application would see P levels slowly decrease to optimal levels. Excess Stable Limited evidence or limited consensus Limited evidence or limited consensus 4 Central Northern Wheatbelt Soil P fertility in excess of optimal range. This could change to well in excess with continued P application; however, ceasing P application would see P levels slowly decrease to optimal levels. Excess Stable Limited evidence or limited consensus Limited evidence or limited consensus 5 Swan to Scott Coastal Plains Soil P fertility in excess of optimal range. This could change to well in excess with continued P application; however, ceasing P application would see P levels slowly decrease to optimal levels. Excess Stable Limited evidence or limited consensus Limited evidence or limited consensus 6 Darling Range to South Coast Soil P fertility in excess of optimal range. This could change to well in excess with continued P application; however, ceasing P application would see P levels very slowly decrease to optimal levels. Excess Stable Limited evidence or limited consensus Limited evidence or limited consensus
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