Abstract
The experiment was conducted to study “COMPARISON OF GROWTH AND YIELD PERFORMANCE OF RICE VARIETIES UNDER THREE AGR0ECOLOGICAL ZONE”. The experiment consisted of five varieties viz, two inbred variety; BRRI dhan-28, BRRI dhan-29 and three hybrid variety: Surma-2, BRRI hybrid dhan-2, Hira-5; three regions viz. Rajshahi, Rangpur and Bogra. The experiment was laid out in a randomized complete block design with three replications. Among the tested varieties BRRI dhan-29 produced highest grain yield (7.97 t ha-1) which was significantly superior to all other varieties and lowest grain yield (5.21 t ha-1) was produced Surma-2 in Rajshahi region. Hira-5 produced highest grain yield (8.81 t ha-1) which was significantly superior to all other varieties and lowest grain yield (6.40 t ha-1) was produced BRRI dhan-28 in Rangpur region. Surma-2 produced highest grain yield (9.48 tha-1) which was significantly superior to all other varieties and BRRI dhan-28 produced the lowest grain yield (6.79 t ha-1) in Bogra region. All the yield contributing measurements of rice varieties showed variability in different region. The result summarized that hybrid variety showed superior performance in comparison with inbred variety (2010-2011).
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