Vol. 11, Issue 9 (2022)

Author(s):
Vijaya Aparna B, Anny Mrudhula K, Prasad PVN and Ravi Babu. M

Abstract:
An experiment was carried out during kharif, 2021 with different plant spacings and nitrogen levels to find out the best spacing and optimum dose of nitrogen in black rice at the Agricultural College Farm, Bapatla. The experiment was laid out in a split plot design with three replications. The main plot treatments were; plant spacings (10 cm x 15 cm, 15 cm x 15 cm, 20 cm x 10 cm, 20 cm x 15 cm) and sub-plot treatments were Nitrogen levels (90 kg N ha-1, 120 kg N ha-1, 150 kg N ha-1). The research results indicated that 20 cm x 15 cm recorded significantly the highest growth attributes, yield attributing characters, grain yield (4519 kg ha-1) of black rice. Among different levels of nitrogen 150 kg N ha-1 recorded significantly maximum growth, yield attributing characters and grain yield (4298kg ha-1) of black rice. In interaction effect between planting geometry and nitrogen levels, plant spacing of 20 cm X 15 cm coupled with 150 kg N ha-1 recorded the highest grain yield (5266 kg ha-1) of black rice.