your product is 3105.20.00
you have escaped the following
1) you have put a brand name ( here all exemptions are void)
2) have you mentioned the name of all three ingradients in invoice? i think no , but u have put a new name for your product
its surely a manufacture under central excise.
exemption notification no 04/11 cite as , not to be used at any stage as fertilizer, does not confirms your product.