Abstract
The biochar obtained from pyrolysis of vegetable biomass gives the plant a good nutritional supply and has a high water retention capacity, however there are still few studies evaluating its use in the production of leafy vegetable seedlings. With that, the objective of this work was to determine proportions of biochar in sand that allow better development of rocket seedlings. The experiment was conducted in a greenhouse at the Federal Rural University of the Semi-Arid (UFERSA). The experimental design used was completely randomized with six treatments (0; 10; 20; 30; 40; 50% of biochar) and ten replications. The evaluated characteristics were: Twinning; Number of leaves per plant; Root length; Plant height; Neck diameter; Fresh and dry mass of plants and water content in the plant. The data were submitted to analysis of variance. The procedure for adjusting the response curves was performed using the R software. The 50% biochar proportion is recommended in the production of arugula seedlings as it provides better development in the plants, promoting significant improvements in all the characteristics analyzed, except germination and number of leaves per plant.
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