lowest tier price on home page is not showing

Question

I have following codes on my home page product listing. I have to calculate the difference between lowest tier price and normal price of a product, But I can't find the lowest tier price. All other information about product are coming but lowest tier price. I can't understant what to do as I am new to magento. Please help. Here is the code snippet..

<?php  
$storeId = Mage::app()->getStore()->getId();  
$_productCollection=Mage::getResourceModel('catalog/product_collection')
        ->addAttributeToSelect('*')
        ->addAttributeToFilter('is_featured', 1)
        ->addAttributeToFilter('status', 1)
        ->joinField('value','catalog_product_entity_tier_price','value', 'entity_id=entity_id','{{table}}.website_id='.$storeId, 'left')
        ->setPageSize(9)
        ->setStoreId($storeId)
        ->addStoreFilter($storeId);  
foreach ($_productCollection as $_product):  
$lowestTierPrice = product->getResource()->getAttribute('tier_price')->getFrontend()->getValue($_product); //It is not working  
$normalPrice = $_product->getPrice();  //it works fine  

print_r($_product->getTierPrice()); //getting all the tier price
endforeach;

Answer 1

For getting tier price you does not need to use

 ->joinField('value','catalog_product_entity_tier_price','value', 'entity_id=entity_id','{{table}}.website_id='.$storeId, 'left')

and

lowestTierPrice = product->getResource()->getAttribute('tier_price')->getFrontend()->getValue($_product); //It is not working  

And add below code inside foreach loop.

$TierPirce=Mage::getModel('catalog/product_type_price')->getTierPrice(null,$_product);