Six planting patterns and split application of nitrogen were tried with rice varieties Kanchi and Kannagi. Kanchi was found to be superior to Kannagi in which split appli- cation of N had least effect on grain yield. Planting 100 hills per m² with one seedling per hill recorded the highest grain yield of 7000 kg/ha followed by 50 hills per m with two seedlings per hill with 6700 kg/ha. Planting more than two seedlings per hill and adopting wider spacing significantly reduced the grain yield due to over crowd- ing and mutual shading resulting in intra-plant competition.
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