Corn patches

Tap it to plant corn, then you will need to water it. Once the corn is fully grown you can harvest it.
There can be multiple patches so keep growing!

The Truck

It needs to be loaded with 5 crops. You can look into its bed to see how many are needed.

Bugs / Beetles

They occupy a patch and prevent you from planting a crop.
Make the bugs go away so you can use the patch.

Cow

A farm cow is as lazy as a Panda.
Feed her 15 food so that she starts moving towards the pen.

Chickens

Find all hens and put them back to the coop.
Some of the like to hide in barns so check every door!