diff --git a/mod.conf b/mod.conf
index 6a2cfc9..eca2bfc 100644
--- a/mod.conf
+++ b/mod.conf
@@ -1,6 +1,6 @@
 name = tech_additions
 description = Adds some block and recipes.
 depends = default, techage
-optional_depends = craft_ingredients
+optional_depends = bbq, bonemeal, craft_ingredients, ethereal, farming
 min_minetest_version = 5.7
 title = Tech additions
\ No newline at end of file
diff --git a/sieving.lua b/sieving.lua
new file mode 100644
index 0000000..05342c3
--- /dev/null
+++ b/sieving.lua
@@ -0,0 +1,247 @@
+local function mod_loaded(name)
+    return (minetest.get_modpath(name) ~= nil)
+end
+
+local sieving_items = {}
+sieving_items["default:dirt"] = { "default:sand", }
+sieving_items["default:dirt_with_coniferous_litter"] = { "default:sand", }
+sieving_items["default:dirt_with_dry_grass"] = { "default:sand", "default:dry_grass_1", }
+sieving_items["default:dirt_with_grass"] = { "default:sand", "default:grass_1", }
+sieving_items["default:dirt_with_rainforest_litter"] = { "default:sand", }
+sieving_items["default:dirt_with_snow"] = { "default:sand", "default:snow" }
+sieving_items["default:dry_dirt"] = { "default:deset_sand", }
+sieving_items["default:dry_dirt_with_dry_grass"] = { "default:desert_sand", "default:dry_grass_1", }
+
+
+if mod_loaded("farming") then
+    -- normal
+    table.insert(sieving_items["default:dirt"], "farming:seed_wheat")
+    table.insert(sieving_items["default:dirt"], "farming:seed_cotton")
+
+    -- slightly dry and cold
+    table.insert(sieving_items["default:dirt_with_coniferous_litter"], "farming:seed_wheat")
+
+    -- slightly dry
+    table.insert(sieving_items["default:dirt_with_dry_grass"], "farming:seed_cotton")
+
+    -- slightly wet
+    table.insert(sieving_items["default:dirt_with_grass"], "farming:seed_wheat")
+    table.insert(sieving_items["default:dirt_with_grass"], "farming:seed_cotton")
+
+    -- wet
+    table.insert(sieving_items["default:dirt_with_rainforest_litter"], "farming:seed_wheat")
+
+    -- cold
+    table.insert(sieving_items["default:dirt_with_snow"], "farming:seed_wheat")
+
+    -- dry
+    table.insert(sieving_items["default:dry_dirt"], "farming:seed_cotton")
+
+    -- dry
+    table.insert(sieving_items["default:dry_dirt_with_dry_grass"], "farming:seed_cotton")
+
+    if farming.mod and farming.mod == "redo" then
+        table.insert(sieving_items["default:dirt"], "farming:seed_rye")
+        table.insert(sieving_items["default:dirt"], "farming:seed_oat")
+        table.insert(sieving_items["default:dirt"], "farming:seed_barley")
+        table.insert(sieving_items["default:dirt"], "farming:seed_rice")
+
+        table.insert(sieving_items["default:dirt_with_coniferous_litter"], "farming:seed_rye")
+        table.insert(sieving_items["default:dirt_with_coniferous_litter"], "farming:seed_oat")
+
+        table.insert(sieving_items["default:dirt_with_dry_grass"], "farming:seed_rye")
+        table.insert(sieving_items["default:dirt_with_dry_grass"], "farming:seed_oat")
+        table.insert(sieving_items["default:dirt_with_dry_grass"], "farming:seed_barley")
+
+        table.insert(sieving_items["default:dirt_with_grass"], "farming:seed_oat")
+        table.insert(sieving_items["default:dirt_with_grass"], "farming:seed_rice")
+
+        table.insert(sieving_items["default:dirt_with_rainforest_litter"], "farming:seed_oat")
+        table.insert(sieving_items["default:dirt_with_rainforest_litter"], "farming:seed_rice")
+
+        table.insert(sieving_items["default:dirt_with_snow"], "farming:seed_rye")
+        table.insert(sieving_items["default:dirt_with_snow"], "farming:seed_oat")
+
+        table.insert(sieving_items["default:dry_dirt"], "farming:seed_oat")
+        table.insert(sieving_items["default:dry_dirt"], "farming:seed_barley")
+
+        table.insert(sieving_items["default:dry_dirt_with_dry_grass"], "farming:seed_rye")
+        table.insert(sieving_items["default:dry_dirt_with_dry_grass"], "farming:seed_oat")
+        table.insert(sieving_items["default:dry_dirt_with_dry_grass"], "farming:seed_barley")
+    end
+end
+
+if mod_loaded("ethereal") then
+    table.insert(sieving_items["default:dirt"],                        "ethereal:worm")
+    table.insert(sieving_items["default:dirt_with_coniferous_litter"], "ethereal:worm")
+    table.insert(sieving_items["default:dirt_with_grass"],             "ethereal:worm")
+    table.insert(sieving_items["default:dirt_with_rainforest_litter"], "ethereal:worm")
+
+    sieving_items["ethereal:bamboo_dirt"] = {
+        "default:sand",
+        "default:grass_1",
+        "ethereal:worm"
+    }
+
+    sieving_items["ethereal:cold_dirt"] = {
+        "default:sand",
+        "default:grass_1"
+    }
+
+    sieving_items["ethereal:crystal_dirt"] = {
+        "default:sand",
+    }
+
+    sieving_items["ethereal:gray_dirt"] = {
+        "default:sand",
+        "ethereal:worm"
+    }
+
+    sieving_items["ethereal:grove_dirt"] = {
+        "default:sand",
+        "default:grass_1",
+        "ethereal:worm"
+    }
+
+    sieving_items["ethereal:jungle_dirt"] = {
+        "default:sand",
+        "ethereal:worm"
+    }
+
+    sieving_items["ethereal:mushroom_dirt"] = {
+        "default:sand",
+        "ethereal:worm"
+    }
+
+    sieving_items["ethereal:dry_dirt"] = {
+        "default:desert_sand",
+    }
+
+    sieving_items["ethereal:fiery_dirt"] = {
+        "default:desert_sand",
+    }
+
+    sieving_items["ethereal:prairie_dirt"] = {
+        "default:sand",
+        "default:grass_1",
+        "ethereal:worm"
+    }
+
+    if mod_loaded("farming") then
+        table.insert(sieving_items["ethereal:bamboo_dirt"], "farming:seed_wheat")
+        table.insert(sieving_items["ethereal:bamboo_dirt"], "farming:seed_cotton")
+
+        table.insert(sieving_items["ethereal:cold_dirt"], "farming:seed_wheat")
+
+        table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_wheat")
+        table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_cotton")
+
+        table.insert(sieving_items["ethereal:grove_dirt"], "farming:seed_wheat")
+
+        table.insert(sieving_items["ethereal:jungle_dirt"], "farming:seed_wheat")
+
+        table.insert(sieving_items["ethereal:dry_dirt"], "farming:seed_cotton")
+
+        table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_wheat")
+        table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_cotton")
+
+        if farming.mod and farming.mod == "redo" then
+            table.insert(sieving_items["ethereal:bamboo_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:bamboo_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:bamboo_dirt"], "farming:seed_rice")
+
+            table.insert(sieving_items["ethereal:cold_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:cold_dirt"], "farming:seed_oat")
+
+            table.insert(sieving_items["ethereal:crystal_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:crystal_dirt"], "farming:seed_oat")
+
+            table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_barley")
+            table.insert(sieving_items["ethereal:gray_dirt"], "farming:seed_rice")
+
+            table.insert(sieving_items["ethereal:grove_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:grove_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:grove_dirt"], "farming:seed_barley")
+
+            table.insert(sieving_items["ethereal:jungle_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:jungle_dirt"], "farming:seed_barley")
+            table.insert(sieving_items["ethereal:jungle_dirt"], "farming:seed_rice")
+
+            table.insert(sieving_items["ethereal:dry_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:dry_dirt"], "farming:seed_barley")
+
+            table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_rye")
+            table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_oat")
+            table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_barley")
+            table.insert(sieving_items["ethereal:prairie_dirt"], "farming:seed_rice")
+        end
+    end
+end
+
+if mod_loaded("bbq") then
+    table.insert(sieving_items["default:dirt"],                        "bbq:yeast")
+    table.insert(sieving_items["default:dirt_with_coniferous_litter"], "bbq:yeast")
+    table.insert(sieving_items["default:dirt_with_grass"],             "bbq:yeast")
+    table.insert(sieving_items["default:dirt_with_rainforest_litter"], "bbq:yeast")
+
+    if mod_loaded("ethereal") then
+        table.insert(sieving_items["ethereal:bamboo_dirt"],     "bbq:yeast")
+        table.insert(sieving_items["ethereal:gray_dirt"],       "bbq:yeast")
+        table.insert(sieving_items["ethereal:grove_dirt"],      "bbq:yeast")
+        table.insert(sieving_items["ethereal:jungle_dirt"],     "bbq:yeast")
+        table.insert(sieving_items["ethereal:mushroom_dirt"],   "bbq:yeast")
+        table.insert(sieving_items["ethereal:prairie_dirt"],    "bbq:yeast")
+    end
+end
+
+if mod_loaded("bonemeal") then
+    table.insert(sieving_items["default:dirt"],                         "bonemeal:bone")
+    table.insert(sieving_items["default:dirt_with_coniferous_litter"],  "bonemeal:bone")
+    table.insert(sieving_items["default:dirt_with_dry_grass"],          "bonemeal:bone")
+    table.insert(sieving_items["default:dirt_with_grass"],              "bonemeal:bone")
+    table.insert(sieving_items["default:dirt_with_rainforest_litter"],  "bonemeal:bone")
+    table.insert(sieving_items["default:dirt_with_snow"],               "bonemeal:bone")
+    table.insert(sieving_items["default:dry_dirt"],                     "bonemeal:bone")
+    table.insert(sieving_items["default:dry_dirt_with_dry_grass"],      "bonemeal:bone")
+
+    if mod_loaded("ethereal") then
+        table.insert(sieving_items["ethereal:bamboo_dirt"],     "bonemeal:bone")
+        table.insert(sieving_items["ethereal:cold_dirt"],       "bonemeal:bone")
+        table.insert(sieving_items["ethereal:crystal_dirt"],    "bonemeal:bone")
+        table.insert(sieving_items["ethereal:gray_dirt"],       "bonemeal:bone")
+        table.insert(sieving_items["ethereal:grove_dirt"],      "bonemeal:bone")
+        table.insert(sieving_items["ethereal:jungle_dirt"],     "bonemeal:bone")
+        table.insert(sieving_items["ethereal:mushroom_dirt"],   "bonemeal:bone")
+        table.insert(sieving_items["ethereal:dry_dirt"],        "bonemeal:bone")
+        table.insert(sieving_items["ethereal:fiery_dirt"],      "bonemeal:bone")
+        table.insert(sieving_items["ethereal:prairie_dirt"],    "bonemeal:bone")
+    end
+end
+
+local sieving_items_count = {}
+for dirt, items in pairs(sieving_items) do
+    sieving_items_count[dirt] = #items
+end
+
+local function sieve(dirt)
+    local items = sieving_items[dirt]
+    if math.random(7) ~= 1 then
+        return ItemStack(items[1])
+    else
+        return ItemStack(
+            items[
+                math.random(sieving_items_count[dirt])
+            ]
+        )
+    end
+end
+
+local function sieve_dirt(dirt)
+    return function() return sieve(dirt) end
+end
+
+for dirt, _ in pairs(sieving_items) do
+    techage.register_sieving_recipe(dirt, sieve_dirt(dirt))
+end
diff --git a/techage.lua b/techage.lua
index 0854f78..070d92f 100644
--- a/techage.lua
+++ b/techage.lua
@@ -64,4 +64,7 @@ minetest.register_craft({
 
 techage.add_grinder_recipe({input="multidecor:consolidated_oil", output="techage:plastic_granules"})
 techage.add_grinder_recipe({input="ethereal:wild_onion_plant 10", output="dye:white"})
-techage.add_grinder_recipe({input="default:ice", output="default:snow 3"})
\ No newline at end of file
+techage.add_grinder_recipe({input="default:ice", output="default:snow 3"})
+
+--add extra sieving
+dofile(minetest.get_modpath("tech_additions") .. "/sieving.lua")