diff --git a/README.md b/README.md
index 1ef914b1..dc82fe74 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,7 @@ Note: Backend and frontend must be running simultaneously for proper functionali
 ## 🌟 Core Features
 
 - 🌾 Crop Recommendation
+- 🌿 Fertilizer Recommendation
 - 📉 Yield Prediction
 - 🔬 Disease Detection
 - � **AI Chatbot** - Platform guidance & agriculture support
@@ -226,6 +227,7 @@ AGRITECH/
 │       ├── 📁 css/             # Stylesheets
 │       └── 📁 js/              # Client-side scripts
 ├── 📁 Crop Recommendation/   # 🌾 Crop recommendation module
+├── 📁 Fertiliser Recommendation System/   # 🌿 Fertilizer recommendation ML module
 ├── 📁 Disease Prediction/     # 🔬 Disease detection module
 ├── 📁 Crop Yield Prediction/   # 📊 Yield forecasting module
 ├── 📁 Community/               # 💬 community/forum backend
diff --git a/disease.js b/disease.js
index 309a2012..8d37f97c 100644
--- a/disease.js
+++ b/disease.js
@@ -255,6 +255,8 @@ const loading = document.getElementById("loading");
 const resultsDiv = document.getElementById("results");
 
 let selectedFile = null;
+let uploadInProgress = false;
+let fileSelectionToken = 0;
 
 // File upload handling
 uploadArea.addEventListener("click", () => fileInput.click());
@@ -308,7 +310,7 @@ fileInput.addEventListener("change", (e) => {
 
 // Analysis function
 analyzeBtn.addEventListener("click", async () => {
-  if (!selectedFile) return;
+  if (uploadInProgress || !selectedFile) return;
 
   loading.style.display = "block";
   resultsDiv.innerHTML = "";
@@ -470,40 +472,59 @@ function validateImage(file) {
   return true;
 }
 
+function readPreviewDataUrl(file) {
+  return new Promise((resolve, reject) => {
+    const reader = new FileReader();
+
+    reader.onload = (event) => resolve(event.target.result);
+    reader.onerror = () => reject(new Error("Error loading image preview."));
+    reader.readAsDataURL(file);
+  });
+}
+
 // Enhanced file handling with validation
-function handleFileSelect(file) {
+async function handleFileSelect(file) {
+  const currentSelectionToken = ++fileSelectionToken;
+
   try {
     validateImage(file);
-    selectedFile = file;
+    uploadInProgress = true;
+    selectedFile = null;
+    analyzeBtn.disabled = true;
 
     previewContainer.innerHTML = '<div class="spinner"></div>';
 
-    const reader = new FileReader();
-    reader.onload = (e) => {
-      previewContainer.innerHTML = `<img src="${e.target.result}" alt="Plant preview" class="preview-image">`;
-      analyzeBtn.disabled = false;
-      resultsDiv.innerHTML = "";
-      document.getElementById("downloadPdfBtn").style.display = "none";
+    const previewDataUrl = await readPreviewDataUrl(file);
 
-      document.getElementById("modelStatus").innerHTML =
-        "🔍 Image loaded - Ready for analysis";
-      document.getElementById("modelStatus").className =
-        "status-indicator status-warning";
-    };
+    if (currentSelectionToken !== fileSelectionToken) {
+      return;
+    }
+
+    selectedFile = file;
+    previewContainer.innerHTML = `<img src="${previewDataUrl}" alt="Plant preview" class="preview-image">`;
+    resultsDiv.innerHTML = "";
+    document.getElementById("downloadPdfBtn").style.display = "none";
 
-    reader.onerror = () => {
-      previewContainer.innerHTML =
-        '<div class="no-results">❌ Error loading image</div>';
-      selectedFile = null;
-    };
+    document.getElementById("modelStatus").innerHTML =
+      "🔍 Image loaded - Ready for analysis";
+    document.getElementById("modelStatus").className =
+      "status-indicator status-warning";
 
-    reader.readAsDataURL(file);
+    analyzeBtn.disabled = false;
   } catch (error) {
+    if (currentSelectionToken !== fileSelectionToken) {
+      return;
+    }
+
     alert(error.message);
     previewContainer.innerHTML =
       '<div class="no-results">📷 Upload an image to get started</div>';
     selectedFile = null;
     analyzeBtn.disabled = true;
+  } finally {
+    if (currentSelectionToken === fileSelectionToken) {
+      uploadInProgress = false;
+    }
   }
 }
 
diff --git a/domain/README.md b/domain/README.md
index 3f06e4d9..e5545645 100644
--- a/domain/README.md
+++ b/domain/README.md
@@ -9,6 +9,8 @@ This directory defines shared domain contracts used across AgriTech.
 
 ## Current Schemas
 - Crop
+- FertilizerRecommendationInput
+- FertilizerRecommendation
 - GrowthStage
 - SoilData
 - PredictionResult
diff --git a/domain/fertilizer.schema.js b/domain/fertilizer.schema.js
new file mode 100644
index 00000000..577660f7
--- /dev/null
+++ b/domain/fertilizer.schema.js
@@ -0,0 +1,79 @@
+/**
+ * Fertilizer recommendation schema
+ */
+
+export const FertilizerRecommendationInputSchema = {
+  $id: "FertilizerRecommendationInput",
+  type: "object",
+  required: [
+    "temperature",
+    "humidity",
+    "moisture",
+    "soilType",
+    "cropType",
+    "nitrogen",
+    "phosphorous",
+    "potassium"
+  ],
+  additionalProperties: false,
+  properties: {
+    temperature: {
+      type: "number",
+      description: "Ambient temperature in degrees Celsius"
+    },
+    humidity: {
+      type: "number",
+      description: "Relative humidity percentage"
+    },
+    moisture: {
+      type: "number",
+      description: "Soil moisture percentage"
+    },
+    soilType: {
+      type: "string",
+      description: "Categorical soil type"
+    },
+    cropType: {
+      type: "string",
+      description: "Categorical crop type"
+    },
+    nitrogen: {
+      type: "number",
+      description: "Nitrogen content"
+    },
+    phosphorous: {
+      type: "number",
+      description: "Phosphorous content"
+    },
+    potassium: {
+      type: "number",
+      description: "Potassium content"
+    }
+  }
+};
+
+export const FertilizerRecommendationSchema = {
+  $id: "FertilizerRecommendation",
+  type: "object",
+  required: ["fertilizerName", "confidence", "inputs"],
+  additionalProperties: false,
+  properties: {
+    fertilizerName: {
+      type: "string",
+      description: "Recommended fertilizer label"
+    },
+    confidence: {
+      type: "number",
+      description: "Prediction confidence score (0-1)"
+    },
+    inputs: FertilizerRecommendationInputSchema,
+    modelVersion: {
+      type: "string",
+      description: "Version of the fertilizer recommendation model"
+    },
+    createdAt: {
+      type: "string",
+      description: "ISO timestamp when the recommendation was generated"
+    }
+  }
+};
\ No newline at end of file
diff --git a/domain/index.js b/domain/index.js
index 12eae6bd..e3a696ae 100644
--- a/domain/index.js
+++ b/domain/index.js
@@ -1,10 +1,13 @@
 import { CropSchema } from "./crop.schema.js";
+import { FertilizerRecommendationInputSchema, FertilizerRecommendationSchema } from "./fertilizer.schema.js";
 import { GrowthStageSchema } from "./growthStage.schema.js";
 import { PredictionResultSchema } from "./prediction.schema.js";
 import { SoilDataSchema } from "./soil.schema.js";
 
 export {
   CropSchema,
+  FertilizerRecommendationInputSchema,
+  FertilizerRecommendationSchema,
   GrowthStageSchema,
   PredictionResultSchema,
   SoilDataSchema
@@ -12,6 +15,8 @@ export {
 
 export const DomainSchemas = {
   Crop: CropSchema,
+  FertilizerRecommendationInput: FertilizerRecommendationInputSchema,
+  FertilizerRecommendation: FertilizerRecommendationSchema,
   GrowthStage: GrowthStageSchema,
   PredictionResult: PredictionResultSchema,
   SoilData: SoilDataSchema
diff --git a/domain/validate.js b/domain/validate.js
index 2e9e394e..110e47d6 100644
--- a/domain/validate.js
+++ b/domain/validate.js
@@ -1,5 +1,7 @@
 import {
   CropSchema,
+  FertilizerRecommendationInputSchema,
+  FertilizerRecommendationSchema,
   GrowthStageSchema,
   PredictionResultSchema,
   SoilDataSchema
@@ -7,6 +9,8 @@ import {
 
 const schemaMap = {
   Crop: CropSchema,
+  FertilizerRecommendationInput: FertilizerRecommendationInputSchema,
+  FertilizerRecommendation: FertilizerRecommendationSchema,
   GrowthStage: GrowthStageSchema,
   PredictionResult: PredictionResultSchema,
   SoilData: SoilDataSchema