Deep banding of phosphorus and nitrogen enhances Rosa multiflora growth and nutrient accumulation by improving root spatial distribution

Plant roots show morphological plasticity to adapt heterogeneous nitrogen (N) and phosphorus (P) distribution, but how fertilizer placement affects root growth nutrient uptake of perennial non-herbaceous species (including Rosa multiflora Thunb. ex Murr. that was the subject this study) is not understood. A pot experiment conducted with five N P fertilization rates determine appropriate application rates. Then, a soil column trial (using selected rates) four placements, including applied alone or in combination either 0–15 cm 15–30 layer, NP mixed throughout as control. The results showed 80 mg kg−1 were for trunk expansion multiflora. Deep banding layer increased first-order lateral length density fertilized zone well accumulation compared other treatments after 46 days. After 108 days, treatment, total plant significantly deep decreased rhizosphere pH improved zone; however, similar observed three treatments. These findings indicated stimulated proliferation spatial which can be an effective management strategy optimizing uptake.