I entered information for a farm rental 1099-misc for crop insurance proceeds. Form 4835 shows it correctly on line 5a but not as taxable on line 5b. How to show on 5b?

Under the Crop Insurance topic for Farm Rental Income, on the page "Defer Crop Insurance or Federal Disaster Payment?", did you enter the full amount from Box 9 of the 1099-MISC? If not, the entire amount was deferred and there will be no taxable amount.

You may wish to review your answers for all areas under the Farming topic. The easiest way to find this topic in TurboTax Online is to find Tax Tools in the left column >> Tools >> Topic Search. Type in "farm rental", click the topic in the list, then Go. In TurboTax Desktop, use the Search box or the Topic List found in the header.