Iron uptake has generally seen a negative effect from the Poly fertiliser, but this is only slight compared to the untreated results. The Buckwheat has seen almost 50% increase in uptake, while the N Fixer has seen only a small increase in uptake.
Buckwheat has again seen the biggest increase in uptake of Copper. Whilst the single species have very little difference and mixes have seen a slightly negative uptake. The Soil improver has the most significant decrease in uptake from the Poly.
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