The 3 yellow boxes to the right of the Durum Wheat row are for any durum wheat figures you may have and only for durum wheat.
The yellow box to the far right of the Total row is for your average arable figures (including any durum wheat). These figures should be clear on your Information Statement. If you have no durum wheat then you only need to complete the average yellow box and this will give you a figure on page 11.
The calculator has to differentiate between the total arable (of which durum wheat is a part) and the durum wheat which gains an additional supplement as part of the reference amount calculation.
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