Abstract
A field experiment was conducted on a farmer’s field in Woliso District of Oromia Region to determine the effect of sowing method and seeding rate on growth, yield components and yield of rice varieties under rainfed conditions. Factorial combinations of three varieties (X-jigna, Gumera and Superica-1), two sowing methods (broadcast and row planting) and three seeding rates (75, 100 and 125 kg/ha) were laid out in Randomized Complete Block Design with three replications. Analysis of variance showed significantly higher difference among varieties for productive tillers, higher grain yield and total biomass. Significantly higher number of tillers at maturity and productive tillers/0.5m<sup>2</sup> as well as higher grain yield and total biomass/0.5m<sup>2</sup> were produced by Gumera. On the other hand, significantly greater grain yield/ha was produced by Gumera than that of Superica-1 and X-jigna. The effect of sowing method was non-significant on the growth parameters, yield and yield components of rice plants. Significantly greater grain yield/ha was obtained at seeding rate of 100kg/ha than 75 and 125 kg/ha. Hence, based on this experimentation, Gumera at seeding rate of 100kg/ha with broadcasting or row planting method recommended for Woliso areas.
Highlights
Rice (Oryzasativa L.) is the world’s third largest crop after maize and wheat
Productive tillers are very important because the final yield is mainly a function of the number of panicles bearing tillers per unit area and number of grains per panicle [Chatterjee and Maiti, 1985]
The study was conducted to determine the effect of sowing method and seeding rate on growth, yield and yield components of three rice varieties under rainfed conditions
Summary
Rice (Oryzasativa L.) is the world’s third largest crop after maize and wheat. It is the staple food for more than half of the world population. Evidences have indicated that cultivation of the crop in Ethiopia was first started at Fogera and Gambella plains in the early 1970’s. Rice is cultivated in Fogera plains, Pawe, the Northern part of Ethiopia and Gambella in Western part of Ethiopia on small scale [MoARD, 2005]. Low infiltration and drainage problems hamper soil management and production of most arable crops. The major crop production constraints in the area include water logging and low use of improved agricultural technologies
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