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Catalogue: GRDC Factsheets
KEy points After decades of consistent phosphorus (P) application, many soils in the western region now have adequate P status... The DGT measurement incorporates the initial soil solution P concentration, as well as the ability of the soil to resupply the soil solution pool in response to the removal of P. In this way, it is designed to mimic the action of plant roots so is a better method of predicting plant P requirements than methods based on chemical extractions, for example, Colwell-P... Soil tests conducted by Buntine grower Stuart McAlpine showed P at double the critical levels advised by CSIRO's Mike Wong...
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Catalogue: GRDC Factsheets
Deep ripping not appropriate for all soil types A comprehensive understanding of the cause and location of high soil strength is required before undertaking deep ripping as research has shown it is does not provide an economic solution in some soil types... KEY POINTS Deep ripping of compacted soils is most likely to improve grain yields on sandy soils and where compaction has occurred on upper parts of the soil profile through machinery traffic or livestock trampling... Overall, compacted subsoils impede root growth, causing reduced plant vigour and poorer water-use efficiency as roots have limited access to water and nutrients, especially in the subsoil...
Related categories:
Catalogue: GRDC Factsheets
KEy points After decades of consistent phosphorus (P) application, many soils in the western region now have adequate P status... The DGT measurement incorporates the initial soil solution P concentration, as well as the ability of the soil to resupply the soil solution pool in response to the removal of P. In this way, it is designed to mimic the action of plant roots so is a better method of predicting plant P requirements than methods based on chemical extractions, for example, Colwell-P... Soil tests conducted by Buntine grower Stuart McAlpine showed P at double the critical levels advised by CSIRO's Mike Wong...
Related categories:
Catalogue: GRDC Factsheets
KEy points After decades of consistent phosphorus (P) application, many soils in the western region now have adequate P status... The DGT measurement incorporates the initial soil solution P concentration, as well as the ability of the soil to resupply the soil solution pool in response to the removal of P. In this way, it is designed to mimic the action of plant roots so is a better method of predicting plant P requirements than methods based on chemical extractions, for example, Colwell-P... Soil tests conducted by Buntine grower Stuart McAlpine showed P at double the critical levels advised by CSIRO's Mike Wong...
Related categories:
Catalogue: GRDC Factsheets
KEy points After decades of consistent phosphorus (P) application, many soils in the western region now have adequate P status... The DGT measurement incorporates the initial soil solution P concentration, as well as the ability of the soil to resupply the soil solution pool in response to the removal of P. In this way, it is designed to mimic the action of plant roots so is a better method of predicting plant P requirements than methods based on chemical extractions, for example, Colwell-P... Soil tests conducted by Buntine grower Stuart McAlpine showed P at double the critical levels advised by CSIRO's Mike Wong...
Related categories:
Catalogue: GRDC Factsheets
Deep ripping not appropriate for all soil types A comprehensive understanding of the cause and location of high soil strength is required before undertaking deep ripping as research has shown it is does not provide an economic solution in some soil types... KEY POINTS Deep ripping of compacted soils is most likely to improve grain yields on sandy soils and where compaction has occurred on upper parts of the soil profile through machinery traffic or livestock trampling... Overall, compacted subsoils impede root growth, causing reduced plant vigour and poorer water-use efficiency as roots have limited access to water and nutrients, especially in the subsoil...
Related categories: