Doses of potassium fertilization in arugula (Eruca sativa L.) culture in soil with mean potassium availability

This work aimed to evaluate the interference of doses of potassium in arugula culture. The experiment was conducted in a rural property in Borborema-SP. A randomized complete block design with five treatments (0; 50; 100; 150 e 200 kg ha-1de KCl)and four replications was used. Were evaluated Dry mass (g); Root size (cm); Number of sheets. There was no significant difference between the treatments and the control in any parameter evaluated. It is concluded that the supply of this nutrient via fertilization does not provide increases in arugula productivity.