02576naa a2200253 a 450000100080000000500110000800800410001910000130006024501870007326000090026052017890026965000190205865000220207765000180209965000160211770000140213370000200214770000190216770000130218670000180219970000200221770000170223777300680225411358872025-10-07       2025    bl uuuu     u00u1 u    #d1 aHAHN, L.  aMineral contents in leaves and fruits and root growth of ?Fuyu? persimmon plants subjected to doses of nitrogen in the soil and foliar applications of calcium.h[electronic resource]  c2025  aThe aim of the current study is to assess the effect of nitrogen (N) application in the soil, either separately or in combination with foliar calcium (Ca) application, on mineral contents in ?Fuyu? persimmon fruits and leaves, and on root growth. The experiment was conducted in an orchard planted in 2007, in Fraiburgo municipality, Santa Catarina State, Brazil. It followed a completely randomized block design with four repetitions per treatment. The applied treatments featured a 5??2 factorial scheme, with five N rates: 0, 50, 100, 150, and 200 kg ha‑1, in combination, or not, to leaf Ca application. Nitrogen was applied as broadcast urea into two applications: 50% of it was applied at early flowering and 50%, when fruits were 2 mm (in diameter). Calcium-based treatments were sprayed all over the tree canopy (new shoots and fruits) with electric backpack sprayer, at spray volume equal to 500 L ha‑1 at dose of 0.3% Ca complexed with amino acids. The first application was carried out 30 days after full bloom (DAFB) and reapplications were performed every 10 days (19 applications, in total). Root growth was assessed by applying the minirhizotron technique in the following soil layers: 0-0.14, 0.15-0.28, 0.29-0.42, and 0.43-0.56 m. Twenty-five fully ripe leaves were sampled at 100 DAFB to determine macro- and micronutrient levels in them. Mineral contents in 20 fruits per plot were determined in peel strips, as well as in pulp wedges without peel. The topsoil layer recorded the largest number of living roots, the largest area and the highest root volume. The higher the N dose, the greater the root diameter, area and volume. Nitrogen fertilization and leaf Ca application did not influence the mineral content in plants? leaves, fruit peel and pulp.  aDiospyros kaki  amineral nutrition  aminirhizotron  aroot growth1 aCOSER, A.1 aBRANCHER, T. L.1 aBALDISSERA, M.1 aNAVA, G.1 aGRANDO, D. L.1 aSIQUEIRA, G. N.1 aBRUNETTO, G.  tActa Horticulturae, Leuven, Belgiumgn. 1423, p. 103-108, 2025.