Mods in den Spieleordner reingeschoben. So richtig tief.

mods/farming/crops/potato.lua

@@ -83,7 +83,8 @@ def.selection_box = farming.select_final
 def.drop = {
 	items = {
 		{items = {"farming:potato 2"}, rarity = 1},
-		{items = {"farming:potato 3"}, rarity = 2}
+		{items = {"farming:potato"}, rarity = 2},
+		{items = {"farming:potato"}, rarity = 3}
 	}
 }
 minetest.register_node("farming:potato_4", table.copy(def))
@@ -99,4 +100,22 @@ farming.registered_plants["farming:potato"] = {
 }
 
 -- mapgen
-farming.register_decoration("potato",3)
+
+minetest.register_decoration({
+	deco_type = "simple",
+	place_on = {
+		"default:dirt_with_grass", "default:dirt_with_rainforest_litter",
+		"mcl_core:dirt_with_grass", "ethereal:prairie_dirt"
+	},
+	sidelen = 16,
+	noise_params = {
+		offset = 0,
+		scale = farming.potato,
+		spread = {x = 100, y = 100, z = 100},
+		seed = 465,
+		octaves = 3,
+		persist = 0.6
+	},
+	y_min = 5, y_max = 40,
+	decoration = "farming:potato_3"
+})