Old way of doing serialisable world objects

DirtFragment.cs

public class DirtFragment {
    public string Id { get; set; }
    public float FertilisationFactor { get; set; }
    public int ChanceToFind { get; set; }
    public float X { get; set; }
    public float Y { get; set; }

    public static object Deserialize(byte[] data) {
        DirtFragment result = new DirtFragment();
        using (MemoryStream m = new MemoryStream(data)) {
            using (BinaryReader reader = new BinaryReader(m)) {
                result.Id = reader.ReadString();
                result.FertilisationFactor = reader.ReadSingle();
                result.ChanceToFind = reader.ReadInt32();
                result.X = reader.ReadSingle();
                result.Y = reader.ReadSingle();
            }
        }
        return result;
    }

    public static byte[] Serialize(object customType) {
        using (MemoryStream m = new MemoryStream()) {
            using (BinaryWriter writer = new BinaryWriter(m)) {
                DirtFragment t = (DirtFragment)customType;
                writer.Write(t.Id);
                writer.Write(t.FertilisationFactor);
                writer.Write(t.ChanceToFind);
                writer.Write(t.X);
                writer.Write(t.Y);
            }
            return m.ToArray();
        }
    }
}