Ogre does not take the materials correctly

in blender I made a model with several textures to give the depth effect (version of blender 2.69) and then export (exporter of ogre version 0.6.0), but when I load it in ogre it is very badly loaded, I do not know It combines the materials well, so I have the floor completely dark.

material grass 
{
    receive_shadows on 

    technique
    {
        pass grass
        {
            ambient 0.800000011920929 0.800000011920929 0.800000011920929 1.0
            diffuse 0.6400000190734865 0.6400000190734865 0.6400000190734865 1.0
            specular 0.5 0.5 0.5 1.0 12.5
            emissive 0.0 0.0 0.0 1.0

            alpha_to_coverage off
            colour_write on
            cull_hardware clockwise
            depth_check on
            depth_func less_equal
            depth_write on
            illumination_stage 
            light_clip_planes off
            light_scissor off
            lighting on
            normalise_normals off
            polygon_mode solid
            scene_blend one zero
            scene_blend_op add
            shading gouraud
            transparent_sorting on

            texture_unit 
            {
                texture Grass-Short.jpg
                tex_address_mode wrap
                scale 0.025 0.025
                colour_op modulate
            }
            texture_unit 
            {
                texture Grass-Short_n.jpg
                tex_address_mode wrap
                scale 0.025 0.025
                colour_op modulate
            }
            texture_unit 
            {
                texture Grass-Short_s.jpg
                tex_address_mode wrap
                scale 0.025 0.025
                colour_op modulate
            }

I think the key is in the lines:

   1- colour_op 
   2- tex_address_mode wrap

I have tried with other colour_op, "alpha_blend", "modulate", "replace", "add", also combining many of them and nothing, the most acceptable thing I have achieved is to leave the main texture, but it takes away a lot of realism .

I would appreciate the help of any humble soul in this forum: D: D

Here the result: trees without alpha, the soil is super bad, it should be green. Ignore the weapon because it is a beta model