Yes pedaling is allowed. For the second movement it is quite necessary. It's not wether pedaling is allowed in a certain type of music or not, it's how you use the pedal to achieve a certain effect. Pastoral 1st mvt. The repeating D's in the LH. Think of these as a timpani drone. Yes and the beginning needs to sound legato. So that means you use the pedal, but change more frequently. You can also use partial pedaling if need be - 1/2 or 1/4 pedal may be all that is required in some places.