The objectives of this study are to examine the effect of zinc application on rice grain yield and some agronomic characters and to find out a suitable Zn application rate. The research carried out in a randomized complete block design with 3 replications in the farmer fields of Edirne province in 1998 ad 1999. Four zinc treatments, 0, 15, 30, and 45 kg ha/-1 were utilized and ZnSO/4 7 H/20 was used as zinc source. The concentration of DTPA-extractable Zn in the soils was 0.22 and 0.43 mg kg/-1 in 1998 and 1999, respectively. Although Zn application was not significantly effective on rice grain yield. A considerable increase observed in grain yield with Zn application. It was 12.3 percent and 8.4 percent in 1998 and 1999, respectively. On average, grain yield increase was 8.9 percent and also, Zn concentration of the plant and the rice grain increased with Zn application. In addition to yield increased with Zn application. Homogeneous matured rice harvested from Zn applied plots. As a result, 15 kg ha/-1 Zn seems to be suitable for Zn application in Thrace-Marmara Region.