An experiment was carried out in Piracicaba (Brazil) from February to June 1994, to study the effects of boron application on the development and mineral composition of sweet pepper (Capsicum annuum L.), cultivar Magda. The experiment was carried out in a randomized block design with four levels of borax (0; 5; 10 and 20 kg ha-1 equivalent to 0; 0.6; 1.1 and 2.2 kg ha-1 of B) and four replications. The plant height, number of leaves and flowers were evaluated, also the foliar area, dry weight of aerial part and nutrient contents in the leaves plus petioles at 45 days after transplanting date. In addition, fruit fresh weight; pericarp and seed mineral composition were evaluated 40 days after transplanting date. Different concentrations of borax did not affect the evaluated characteristics nor the macronutrient and B, Cu, Fe, Mn and Zn levels in the leaves plus petioles and fruits. For the pericarp and seeds, the concentrations of boron were higher in the seeds than of in petioles for all levels of applied borax.
Capsicum annuum; boron; borax; mineral nutrition
