diff --git a/.changeset/better-snakes-clap.md b/.changeset/better-snakes-clap.md
new file mode 100644
index 000000000..6f4d23ae5
--- /dev/null
+++ b/.changeset/better-snakes-clap.md
@@ -0,0 +1,5 @@
+---
+"@nmi-agro/fdm-calculator": patch
+---
+
+Fix nitrogen removal for crop residues: residues left on the field are no longer counted as removed, while residues removed from the field are.
diff --git a/fdm-calculator/src/balance/nitrogen/removal/index.test.ts b/fdm-calculator/src/balance/nitrogen/removal/index.test.ts
index 97444a5f3..4404a00d5 100644
--- a/fdm-calculator/src/balance/nitrogen/removal/index.test.ts
+++ b/fdm-calculator/src/balance/nitrogen/removal/index.test.ts
@@ -66,9 +66,9 @@ describe("calculateNitrogenRemoval", () => {
             cultivationDetailsMap,
         )
 
-        expect(result.total.toNumber()).toBeCloseTo(-23) // -20 from harvest + -3 from residue
+        expect(result.total.toNumber()).toBeCloseTo(-20) // -20 from harvest
         expect(result.harvests.total.toNumber()).toBeCloseTo(-20)
-        expect(result.residues.total.toNumber()).toBeCloseTo(-3)
+        expect(result.residues.total.toNumber()).toBeCloseTo(0) // No nitrogen removed by residues since m_cropresidue is true
     })
 
     it("should handle cases with no harvests or residues", () => {
@@ -76,7 +76,7 @@ describe("calculateNitrogenRemoval", () => {
             {
                 b_lu: "cultivation1",
                 b_lu_catalogue: "catalogue1",
-                m_cropresidue: false,
+                m_cropresidue: true, // Residues left on field, not removed
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
                 b_lu_name: "Cultivation 1",
diff --git a/fdm-calculator/src/balance/nitrogen/removal/residue.test.ts b/fdm-calculator/src/balance/nitrogen/removal/residue.test.ts
index 490325409..fa9b8538a 100644
--- a/fdm-calculator/src/balance/nitrogen/removal/residue.test.ts
+++ b/fdm-calculator/src/balance/nitrogen/removal/residue.test.ts
@@ -31,14 +31,14 @@ describe("calculateNitrogenRemovalByResidue", () => {
         ],
     ])
 
-    it("should return 0 if no crop residues are left", () => {
+    it("should return 0 if crop residues are left on the field", () => {
         const cultivations: FieldInput["cultivations"] = [
             {
                 b_lu: "cultivation1",
                 b_lu_catalogue: "catalogue1",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: false, // No residue left
+                m_cropresidue: true, // Residues left on field, not removed
                 b_lu_name: "Cultivation 1",
                 b_lu_croprotation: "cereal",
             },
@@ -64,7 +64,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
                 b_lu_catalogue: "catalogue1",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: true,
+                m_cropresidue: false, // Residues removed from field
                 b_lu_name: "Cultivation 1",
                 b_lu_croprotation: "cereal",
             },
@@ -116,7 +116,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
                 b_lu_catalogue: "catalogue1",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: true,
+                m_cropresidue: false, // Residues removed from field
                 b_lu_name: "Cultivation 1",
                 b_lu_croprotation: "cereal",
             },
@@ -185,7 +185,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
                 b_lu_catalogue: "catalogue1",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: true,
+                m_cropresidue: false, // Residues removed from field
                 b_lu_name: "Cultivation 1",
                 b_lu_croprotation: "cereal",
             },
@@ -228,7 +228,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
         )
     })
 
-    it("should handle null m_cropresidue as false", () => {
+    it("should handle null m_cropresidue as not removed (return 0)", () => {
         const cultivations: FieldInput["cultivations"] = [
             {
                 b_lu: "cultivation1",
@@ -261,7 +261,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
                 b_lu_catalogue: "catalogue1",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: true,
+                m_cropresidue: false, // Residues removed from field
                 b_lu_name: "Cultivation 1",
                 b_lu_croprotation: "cereal",
             },
@@ -295,7 +295,7 @@ describe("calculateNitrogenRemovalByResidue", () => {
                 b_lu_catalogue: "catalogue2",
                 b_lu_start: new Date("2022-01-01"),
                 b_lu_end: new Date("2022-12-31"),
-                m_cropresidue: true,
+                m_cropresidue: false, // Residues removed from field
                 b_lu_name: "test",
                 b_lu_croprotation: null,
             },
diff --git a/fdm-calculator/src/balance/nitrogen/removal/residue.ts b/fdm-calculator/src/balance/nitrogen/removal/residue.ts
index 2632cd7bf..fbfecc87e 100644
--- a/fdm-calculator/src/balance/nitrogen/removal/residue.ts
+++ b/fdm-calculator/src/balance/nitrogen/removal/residue.ts
@@ -39,8 +39,8 @@ export function calculateNitrogenRemovalByResidue(
             )
         }
 
-        // If no crop residues are left or if this is not known return 0 for the amount of Nitrogen removed by crop residues
-        if (!cultivation.m_cropresidue) {
+        // If crop residues are left or if this is not known return 0 for the amount of Nitrogen removed by crop residues
+        if (cultivation.m_cropresidue !== false) {
             return {
                 id: cultivation.b_lu,
                 value: new Decimal(0),