Experiments were conducted over 2 years during the dry season of 2002 (June-September) and wet season of 2002-2003 (December-March) at Regional Research Station, Tamil Nadu Agricultural University, Vridhachalam, India, to study the influence of two colors of polyethylene film mulch (black and white polyethylene film mulch), herbicides (Fluchloralin at 1.0 kg/ha and no herbicide application), and three plant geometries [30 x 10 cm, 20 x 20 cm (two seeds/hill), and 20 x 15 cm] on soil properties, growth, and yield of groundnut.