There are lots of food pellets near the ship, and there is only one part left, but don't get sidetracked because there is a lot to do in this region. This is a good place to come back to later though if you have an extra day and just want to build up your Pikmin numbers. The first thing to deal with is a boss, and which boss you get depends whether it's an even or odd number of days since impact.
Preliminaries
Start with at least 20 Yellows, 20 Reds and as many Blues as you need to get to the 100 Pikmin limit. Head north through the gap where the cardboard box was, then left over the box into the large circular area. Getting 100 Pikmin through these obstacles at once is tricky so you might want to make more than one trip. A new enemy you may meet on the way is the iridescent flint beetle, which looks just like its name. It won't hurt your Pikmin but they are irresistibly driven to attack it, so you may have to call them a few times to keep them in line. If you have the time, try throwing some Pikmin on top of it to make it drop some goodies.