diff --git a/app/Http/Controllers/CropYieldController.php b/app/Http/Controllers/CropYieldController.php
index 235359e..3bc7baa 100644
--- a/app/Http/Controllers/CropYieldController.php
+++ b/app/Http/Controllers/CropYieldController.php
@@ -154,7 +154,8 @@ class CropYieldController extends Controller
             $staticCropIds[] = $crop->id;
             if ($crop->extends) {
                 $i = 0;
-                foreach ($crop->extends as $item) {
+                $extends = json_decode($crop->extends, true);
+                foreach ($extends as $item) {
                     $i++;
                     $_key = 'extend_'.$i;
                     $staticsData[$_key] = [