The wheat seeds must be sown in about 4 to 5 cm inside the soil. Always put the seeds in rows and maintain a spacing of 20-22.5 cm between the rows. Planting or sowing the seeds in the right time is also important as delayed sowing can cause a gradual decline in the production. In India, it is generally sown in the end of October and early November. Also see that the wheat seeds is properly graded and thoroughly cleaned before sowing. Here you can apply fungicide for treating the seeds.