Controller is not working

ionic-v1
1

Not able to display the contents from the database.
The PHP is returning jason encoded value but the controller is not triggering for a particular form.
There is one more controller outside the form for camera which is working fine.

<ion-content >

<div class="list">

<div class="button button-full button-stable">
  Category of crop 
</div>
   <label class="item item-input item-select">
    <div class="input-label">
      Category
    </div>
    <div>
    <select ng-app = 'test' ng-controller="crop_cat">
      <option ng-repeat="c in data"> {{c.crop_cat_name}} </option>
    </select>
    </div>
  </label>


<div ng-controller="ExampleController" padding="true">

<button class="button button-full button-assertive" ng-click="takePhoto()">
Take Photo
</button>

<button class="button button-full button-assertive" ng-click="choosePhoto()">
Choose Photo
</button>

<img ng-show="imgURI !== undefined" ng-src="{{imgURI}}" style="text-align: center">

</div>

 </ion-content>

And My controller.js

.controller('crop_cat',function($scope,$http){
                       $http.get('crop_cat.php')
                       .success(function(data) {
                       			 alert(data);
                                $scope.data = data;
                                
                            })
                       .error(function(){
                          $scope.data="error";
                       });
            });

Please help