Two trials was conducted to study the effect of the ring and paclobutrazol in the production and mineral nutrition in pear tree Packham´s Triumph cv, in São Joaquim city, SC, south of Brazil, located in 1,400 m of altitude, in a commercial orchard, using adult plants .The experimental delineation used in the trials was of randomized blocks. In the first trial it was studied 7 treatments : 1) Control, 2) 1,5 g.tree-1 of paclobutrazol applied in soil application, 3) 3,0 g.tree-1 of paclobutrazol applied in soil application, 4) 4,5 g.tree-1 of paclobutrazol applied in soil application , 5) ring (one ring), 6) double ring and 7) full ring (one ring followed by another ring in the same place after cicatrization ).In the second trial, it was studied: 1) control, 2) 2,0 g.tree-1 of paclobutrazol applied in soil application 3) 3,0 g.tree-1 of paclobutrazol applied in soil application, 4) 1000 mg.l -1 paclobutrazol by foliar application, 5) 2000 mg.l -1 of paclobutrazol by foliar application, 6) one ring and 7) double ring .The highest production was observed in the full and double ring. The ring had greater effect in the production and the paclobutrazol soil application had greater effect than the foliar application. The treatments did not influence the nutrients levels in the fruit with exception of the potassium. The highest potassium level was found in the control which showed the biggest fruits.
Pyrus communis L.; ring; plant growth regulators
