app/Models/Plant.php

@@ -127,4 +127,9 @@ class Plant extends Model
     {
         return $this->hasMany(ProductCharacteristicsMaster::class, 'plant_id', 'id');
     }
+
+    public function productionCharacteristics()
+    {
+        return $this->hasMany(ProductionCharacteristic::class, 'plant_id', 'id');
+    }
 }