turtle.suckDown

Function turtle.suck
Moves one or more items from either the ground below the turtle, or, from an inventory-enabled block (such as a chest) below the turtle. If an item is in the square directly below the turtle, it picks up one of those items. If a chest is in the square directly below the turtle, it picks up the items from the first non-empty chest slot, moving from top left to bottom right. The items are moved into the currently selected turtle slot if there is room. If the currently selected turtle slot is filled up before all of the items are picked up, the remaining picked up items are put in the next available turtle slot. If the currently selected turtle slot is 16 and the next slot is required, it will loop around and try turtle slot 1, and so on. As of ComputerCraft 1.6, if an amount is specified, the turtle will attempt to pick up at most the specified number of items. Earlier builds always attempt to pick up a full slot.
Syntax	turtle.suck([number amount])
Returns	boolean true if at least one item was moved into the turtle's inventory; false otherwise.
Part of	ComputerCraft
API	turtle

Examples

Example
Picks up some items from below the turtle.
Code	turtle.suckDown()