dont register decoration if ethereal active

crops/rhubarb.lua

@@ -85,6 +85,7 @@ farming.registered_plants["farming:rhubarb"] = {
 
 -- mapgen
 
+if not farming.eth then
 minetest.register_decoration({
 	deco_type = "simple",
 	place_on = {"default:dirt_with_grass", "mcl_core:dirt_with_grass"},
@@ -101,3 +102,4 @@ minetest.register_decoration({
 	y_max = 20,
 	decoration = "farming:rhubarb_3"
 })
+end