This Article Contains information directly from the Pikmin Games. This article is based off of an Enemy/Treasure/Area/Cave/Pikmin/Character from the Pikmin series of Games.
The Nutrient Silo is a treasure in Pikmin 2. It is found in the sixth sublevel of Hole of Heroes, which is surrounded with water and aquatic enemies. Use your Blue Pikmin to defeat all of the Wollywogs and other enemies, that way retrieving the treasure will be a cinch. It is found in one of the corners in the sublevel. The Nutrient Silo is actually a jar of Skippy peanut butter.
In The PAL version, the Nutrient Silo is found on the first sublevel of the White Flower Garden. It will be on one of the edges of the level. The only enemies will be Male- and Female Sheargrubs, so take those out first.