diff --git a/FS25_ADSmartPickup/adFields.lua b/FS25_ADSmartPickup/adFields.lua
index 5291aa7..da84168 100644
--- a/FS25_ADSmartPickup/adFields.lua
+++ b/FS25_ADSmartPickup/adFields.lua
@@ -318,7 +318,7 @@ end
 local function newScan(adEnv, entry)
     local field, fieldId = entry.field, entry.id
     local scan = {id = fieldId, queue = {}, head = 1, tail = 0, points = {}, fruitVotes = {},
-        anySum = 0, readySum = 0, immatureSum = 0, soil = {fert = {0, 0}, lime = {0, 0}, plowLevel = {0, 0}, weed = {0, 0}}}
+        anySum = 0, readySum = 0, immatureSum = 0, totalSum = 0, soil = {fert = {0, 0}, lime = {0, 0}, plowLevel = {0, 0}, weed = {0, 0}}}
     local info = {id = fieldId, field = field, points = scan.points, verts = {}, mowable = false, readyRatio = 0}
     scan.info = info
     -- 1) polygon og kandidatpunkter (centroid + halvvejs mod op til 8 hjørner)
@@ -387,7 +387,9 @@ function ADFields.scanPerFruit(scan)
         push(scan, function()
             local x, z = point.x, point.z
             if fruitIndex ~= nil then
-                local okA, _, anyPixels, _, pointState = pcall(FSDensityMapUtil.getFruitArea, fruitIndex, x - 2, z - 2, x + 2, z, x, z + 2, true, true)
+                -- returnerer fruitValue, numPixels (afgrøde i høsthøjde), totalNumPixels (hele arealet), growthState
+                local okA, _, anyPixels, totalPixels, pointState = pcall(FSDensityMapUtil.getFruitArea, fruitIndex, x - 2, z - 2, x + 2, z, x, z + 2, true, true)
+                if okA and type(totalPixels) == "number" then scan.totalSum = scan.totalSum + totalPixels end
                 if okA and anyPixels then
                     scan.anySum = scan.anySum + anyPixels
                     if not ADFields.isPrime(pointState, prime) then scan.immatureSum = scan.immatureSum + anyPixels end
@@ -433,6 +435,8 @@ local function finishScan(adEnv, scan)
         info.readyRatio = scan.anySum > 0 and scan.readySum / scan.anySum or 0
         info.immatureRatio = scan.anySum > 0 and scan.immatureSum / scan.anySum or 0
         info.anyPixels = scan.anySum
+        -- andel af hele arealet der stadig står i høsthøjde (fremdrift på fanen Måned)
+        info.standingRatio = scan.totalSum > 0 and scan.readySum / scan.totalSum or nil
         fruit = g_fruitTypeManager:getFruitTypeByIndex(info.fruitIndex)
         info.fruitName = fruit ~= nil and fruit.name or nil
         info.harvestFillType = fruit ~= nil and fruit.fillType ~= nil and fruit.fillType.index or nil
diff --git a/FS25_ADSmartPickup/adMonthView.lua b/FS25_ADSmartPickup/adMonthView.lua
index 21ac50c..1d77445 100644
--- a/FS25_ADSmartPickup/adMonthView.lua
+++ b/FS25_ADSmartPickup/adMonthView.lua
@@ -82,11 +82,16 @@ function ADMonthView.window(field, info, ctx)
     return "ok"
 end
 
--- Fremdrift 0-1: Courseplays egen (gennemsnit af sættene) vinder; høst/slåning ellers ud fra hvor meget
--- af afgrøden der er væk; ellers ukendt (nil).
+-- Fremdrift 0-1. Høst/slåning: andelen af HELE arealet der stadig står (standingRatio) — readyRatio duer ikke,
+-- for slået/høstet afgrøde forsvinder også fra dens nævner (in-game 27/9 F90: halvt slået = 0 %), og
+-- Courseplays tal er kun positionen i kurset (starter forfra på 0 ved genstart). Øvrige trin: Courseplay.
 function ADMonthView.progress(field, info, cpProgress)
+    local cropStage = field.stage == "harvesting" or field.stage == "mowing"
+    if cropStage and type(info.standingRatio) == "number" then
+        return math.max(0, math.min(1, 1 - info.standingRatio))
+    end
     if type(cpProgress) == "number" then return math.max(0, math.min(1, cpProgress)) end
-    if (field.stage == "harvesting" or field.stage == "mowing") and type(info.readyRatio) == "number" then
+    if cropStage and type(info.readyRatio) == "number" then
         return math.max(0, math.min(1, 1 - info.readyRatio))
     end
     return nil
diff --git a/FS25_ADSmartPickup/modDesc.xml b/FS25_ADSmartPickup/modDesc.xml
index 37ceb6a..5366744 100644
--- a/FS25_ADSmartPickup/modDesc.xml
+++ b/FS25_ADSmartPickup/modDesc.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8" standalone="no"?>
 <modDesc descVersion="107">
     <author>masterdraco</author>
-    <version>1.35.0.0</version>
+    <version>1.35.1.0</version>
     <title>
         <en>AD Smart Pickup</en>
     </title>
diff --git a/tests/test_adMonthView.lua b/tests/test_adMonthView.lua
index e28249a..c8425a9 100644
--- a/tests/test_adMonthView.lua
+++ b/tests/test_adMonthView.lua
@@ -28,7 +28,11 @@ check("MV3 ukendte data", V.withersIn({witheredState = 7}, 7, 6), false)
 
 -- MV4: fremdrift
 local harvest = M.with(M.newField(15), {stage = "harvesting", kind = "harvest"})
-check("MV4 CP vinder", V.progress(harvest, {readyRatio = 0.9}, 0.5), 0.5)
+check("MV4 CP vinder uden arealtal", V.progress(harvest, {readyRatio = 0.9}, 0.5), 0.5)
+-- in-game 27/9 F90: halvt slået græs viste 0 % — slået græs tæller ikke i readyRatio's nævner
+check("MV4 slåning ud fra hele arealet", V.progress(M.with(harvest, {stage = "mowing"}), {readyRatio = 1, standingRatio = 0.5}, nil), 0.5)
+check("MV4 areal slår CP (kursus genstartet = 0)", V.progress(harvest, {readyRatio = 1, standingRatio = 0.4}, 0), 0.6)
+check("MV4 pleje bruger stadig CP", V.progress(M.with(harvest, {stage = "fertilizing"}), {standingRatio = 0.4}, 0.3), 0.3)
 check("MV4 høst ud fra afgrøde", V.progress(harvest, {readyRatio = 0.25}, nil), 0.75)
 check("MV4 kultivering ukendt", V.progress(M.with(harvest, {stage = "cultivating"}), {readyRatio = 0}, nil), nil)
 check("MV4 tekst", V.percentText(0.504), "50 %")