Improve Shady Sands' Agriculture

 is an unmarked quest in Fallout.

Walkthrough
Talk to the Curtis (described as "weather-beaten farmer") on the eastern area of Shady Sands and ask what he does. If you have a Science skill above 40%, you can inform him of crop rotation through dialogue options. He will think it is a good idea and you will recieve 500 experience points.

If you have a science skill of less than 40%, simply get the farmer to Tell Me About "crop rotation", but you do not gain the reputation bonus.

This is not given as a quest by anyone, but it is something you can do for additional experience.

Reward

 * 500 Experience Points and +2 Reputation