Metric ribbon was used to measure the diameter of the plants, the presage of the plants was made with an analytical scale in the laboratory and the roots had been measured with metric ribbon, leaving it land. The data had been submitted to test F and the test of Turkey and the significant results compared by the test of averages with 5% of probability. 6. RESULTS AND QUARREL had been observed significant differences between the treatments it characteristic length to only radicular (Table 2). The excessively characteristic ones evaluated had not presented significant difference showing that the addition of the adoration of the Biotech ground did not provide increment in the evaluated characteristics, although approximately to verify increase of until 49% of productivity with application of Biotech in relation the witness. TABLE 2.

Averages of growth of the culture of the lettuce, to cultivate crespa, submitted the different times of application and dose of the Biotech. Houris, 2010. the PLANT (cm) PRODUCTIVITY (g) LENGTH CURRICULAR (cm) TREATMENT 520 litros/ha in plantio+20 litros/ha 20 D.A.P.84, 73 a572,64 a9,13 TREATMENT 210 litters/ha in plantio77,93 a490,28 a5,46 b TREATMENT 320 litros/ha in plantations followed for distinct letters in the vertical line differs between itself to the level of 5% of probability for the test of Tukey. 7. CONCLUSION Concludes that the use of the Biotech Adoration of the Ground can represent an alternative in the handling of the culture of the lettuce (sativa Lactuca L.) to cultivate crespa. However, it has necessity of bigger studies to infer on productivity and harvested product quality.