That’s just farm/ranch input costs, and does not include taxes, overhead or capital expenditures, which represent the bulk of their actual cost. It also includes all labor, not just direct labor.
It (your link) also states that labor cost was
second to fertilizer and chemical costs.
The price at the farm/ranch is generally much less than the cost at the shelf, so at the end of the day, DL is probably around 2-3%
A union sheet metal fabricating facility building HVAC products in Southern California only runs 10% direct labor.