where can I buy large quantities of liquid molasses? everywhere I look it's in gallon containers and I need at least 100 gallons per year for my pastures.

Look for farm and ranch co-ops around the area. They usually sell it by the pound if you bring your own container. A gallon weighs about 11 pounds and costs a little over a dollar depending on market rates.

You can buy liquid Blackstrap Molasses east of Mckinney. It is sold from 1 gallon to 270 gallon tote. It is certified to be used in Organic Programs.
. Also carrries other Organic fertilizers. Phone number is 214-577-2194 ask for Chad.