One of the problems encountered in the process of crop production is the loss of soil nutrients are absorbed by the roots of plants for survival. Therefore, it required the addition of nutrients lost through efforts to accumulate. The aimof this study is to determine the effect of Zafertilizers right to growth. This research was conducted at the Faculty of Agriculture, University Mahasaraswati garden, in Banjar Tuka Perean Desa Baturiti, Tabanan regency of Bali Province, on the date of December 10, 2015 until January 29, 2016. The research is a field research using a randomized block design (RAK) with 6 treatments and 4 replications. The 6 treatments in such as Po = Control (without using Zafertilizers),P1 = Za 0,5gr / 10kg, P2 = Za 1 g / 10kg, P3 = Za 1,5gr / 10kg, Za P4 = 2 gr / 10kg, P5 = Za 2,5gr / 10kg. the results showed that the fertilizer ZaÂ with a dose of 2,5gr / 10kg on mustard plants provide maximum pieces 22.4 cm and a maximum number of leaves 19 . These results is very significant compared with high of crops the treatment without Za 4.4 cm plant height and number of leaves 5 pieces. The treatment with dosing Za 2,5gr / 10kg also significantly affect the weight of the wet and mustard plant dry weight, with the result reached 107 g wet weight and 10.08 g dry weight of the plant. This result is significant compared to the wet weight and dry weight of plants of without Za ie consecutive 1 gr wet weight and dry weight 0.62 gr. The same thing also shows the influence of Zafertilizers against wet weight and root dry weight. The treatment with 2.5 gr / 10 kg drive the maximum results to the wet weight and dry weight of roots is 21 gr and 1.08 gr.