Biomass yield, nutrient concentration and nutrient uptake by SRC willow cultivars grown on different sites in Denmark

Concentration and uptake of N, P and K in harvested biomass in 2nd harvest rotation differed significantly between cultivars and between sites. Across cultivars and sites, nutrient concentration decreased linearly with increasing DM yield, whereas nutrient uptake increased linearly. These results have implications for nutrient balance and fertilization strategies for willow SRC.