Push them both left and then stand in the middle and they will separate.
The small key in Astro Knights Island is for Mordred's secret hideout. When you come to that wind mill area, move the hay bales apart and use the key on that.
The farmer you meet near the hay bales will give you a bag. (just one)
you cant you have to have the owl (hint: it is under-ground the yellow bales of hay)
yes
Go to the hay bales and push them apart. The key opens the hatch to Mordred's underground laboratory.
In Mordred's underground lab (beneath the hay bales), there is a wall to the left that blocks you off. It isn't rock, it's dirt, and you can push right through it.
The secret room between the hay bales!
It unlocks Mordred's secret laboratory. The entrance is between the two hay bales in the farm area near the mill.
Push the hay bales to one side, and get between them. You will see an underground door to Mordred's laboratory. You need the small key to open it. (see related question)
In Astro Knights Island on Poptropica, the fuel for the hovercraft can be found in the fuel canisters located next to the dock where you first arrive on the island. You need to collect the fuel canister and use it to power the hovercraft to cross the toxic swamp.
The barrel doesn't move. The secret entrance is between the hay bales by the farm. Slide them left, then apart.
The key unlocks the entrance to Mordred's hidden underground laboratory. (You will find it under two bales of hay.)