Entering the cost in the Farming operation simply adds a value on the Transfers to Marketing Enterprise for your share of the Harvested crop found under the heading called Enterprise Profit/Loss. When you record the harvested crop sales that transaction is post to the Crop Marketing Enterprise not the field crop enterprise. When you go to the Enterprise tab of the Enterprise statement place the dot by Crop Marketing. Select same crop/year and select the report tab, here is where you see the sales posting.
If you are not seeing anything in the Profit/loss section of the Enterprise statement make sure you are selecting From the Input heading to view the report by Farm Inputs Only instead of the Landlord Inputs Only or Farm and Landlord Inputs. You can go to the heading called Print options and check the box called Print Marketing Gain/Loss on Field Enterprise Statements if the sales have been recorded.