RCM on Freight Charges paid on Organic Manure

Hi experts...
As per Notification No.12/2017 of CGST act,the Services provided by GTA for transportation of Organic Manure is Exempted.We are dealing with Both Charging of GST rate @ 5 % on Sale of Organic Manure(Branded) and Exempted (Unbranded).Whether RCM on Freight charges for Sale of Organic Manure @ 5 % is applicable or it is Exempted as per Notification No.12/2017.
Please help in this regard...