Interactive comment on “ Scale and space dependencies of soil Nitrogen variability ”

The manuscript explores the effect of the N fertilizer applied to a previous horticultural crop on the subsequent, unfertilized, wheat crop: the different response of weight and nitrogen content of the cereal. The differences shown by the wheat crop after the fertilization of the previous crop were already examined by several of the authors using the wavelet technique (Milne et al. 2010). The new aspect considered in this manuscript is the separation between the whole plant and the grain. The authors discussed some results like the different answer of grain weight compared to plant weight which might be due to physiological reasons, as for instance an upper threshold for grain yield, which could be similar to what Hawkesford (2014) indicates in his figures 2 and 3.