2.6.4 Choosing to add fertiliser or soil improver
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2.6.4.a What are the criteria when choosing between a fertiliser and a soil improver?
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2.6.4.b Selecting the properties of soil improvers and fertilisers
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2.6.4.c Determining the quantity of soil improvers and fertilisers to apply
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2.6.4.d Foliar application
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2.6.4.e Decision-making review: order of priority of the parameters to be corrected