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Livestock & Forage
Soil Samples P question
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<blockquote data-quote="mezz" data-source="post: 3342652" data-attributes="member: 57672"><p>I'm no expert but I suspect it is more likely that the P is being locked up rather than leached, if the FibroPhos was working. Grassland Agro in Ireland was pushing a similar product called PhysAlg, to people who had a similar problem, which was protected P, to prevent being locked up, like FibroPhos it was an awful price. </p><p></p><p>The P is more likely to get locked up if the pH is either too high or too low. However recently I've been reading about the Albrecht soil test, which looks as base saturation. As I understand it, it matters whether you raise the pH with Magnesium or Calcium. So raising pH with Calcium still won't have the soil performing to its potential if Magnesium is required, although the pH reading will be correct and nutrients will be locked up as a result.</p><p></p><p>Spreading N in March/April apparently doesn't affect the Clover, as it isn't really growing then, however you're likely to have the same problem with DAP.</p></blockquote><p></p>
[QUOTE="mezz, post: 3342652, member: 57672"] I'm no expert but I suspect it is more likely that the P is being locked up rather than leached, if the FibroPhos was working. Grassland Agro in Ireland was pushing a similar product called PhysAlg, to people who had a similar problem, which was protected P, to prevent being locked up, like FibroPhos it was an awful price. The P is more likely to get locked up if the pH is either too high or too low. However recently I've been reading about the Albrecht soil test, which looks as base saturation. As I understand it, it matters whether you raise the pH with Magnesium or Calcium. So raising pH with Calcium still won't have the soil performing to its potential if Magnesium is required, although the pH reading will be correct and nutrients will be locked up as a result. Spreading N in March/April apparently doesn't affect the Clover, as it isn't really growing then, however you're likely to have the same problem with DAP. [/QUOTE]
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Soil Samples P question
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