Pecans
How can I kill the weeds around my pecan tree?
There are several effective ways to manage the weeds around a pecan tree. The one you choose will depend largely upon the equipment and chemicals you use. The most common method is a close mowed sod with a herbicide strip around the tree. The main factor is to eliminate competition for moisture and nutrients and leaves a good surface for harvesting in the fall.
Round-up and other selective herbicides can be used after the trees are several years old or by using a shield. The shield will protect the tree trunk. It is important to not allow any herbicide to contact green stems or foliage.