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Paper Details

Effect of planting geometry and timing and source of nitrogen application on yield and yield attributing character of rice (Oryza sativa L.) under system of rice intensification


Journal Title:International Journal of Agricultural Sciences

An experiment was conducted at Agronomy Research Station, Orissa University of Agriculture and Technology, Bhubaneswar during Kharif season of 2012 to study the effect of different fertility levels, planting patterns per hill and their interaction on productivity of rice variety Lalat under SRI. F2 (FYM @ 15 t ha-1 + vermicompost 2 t ha-1 + neem cake 250 kg ha-1) gave highest yield (8.76 t ha-1). It was found that twice or thrice splitting of N was at par (7.62 and 7.57 t ha-1). Highest harvest index was recorded from F2 (51.11 %) among main plots and P1 (2525cm spacing with 1 seedling hill-1) i.e. 50.41 per cent among subplots. F4 (FYM @ 5 t ha-1 + N : P2O5 : K2O @ 30:30:30 kg ha-1 basal) and P3 (3030 cm spacing with 1 seedling hill-1) gave the lowest harvest index (45.74 % and 43.33 %, respectively). Three plants per hill with wider spacing of 3030 cm gave the highest yield among all planting patterns. Wider spacing was found more beneficial. More than one plant per hill had given increased yield due to higher plant population per m2 in comparison to one plant per hill. Fertility level (F4) with half of RDF of nitrogen, recorded the lowest yield (5.87 t ha-1). Among the subplots the lowest yield was recorded in P3 i.e. one seedling per hill at 3030 cm spacing (6.75 t ha-1).