GROWTH AND YIELD PERFORMANCE OF LOCAL AND MODERN AROMATIC RICE IN BORO SEASON

Abstract

The field experiment was conducted at the Research Farm of the Department of Agricultural Botany, Sher-e-Bangla Agricultural University, during the period from November 2019 to May 2020 to evaluate the growth and yield performance of local and modern aromatic rice in Boro season. The experiment comprised of single factor where nine aromatic rice varieties were used as the test crops. The varieties were as follows: i) BRRI dhan5 (Dulabhog), ii) BRRI dhan34, iii) BRRI dhan37, iv) BRRI dhan38, v) BRRI dhan70, vi) BRRI dhan75, vii) BRRI dhan80, viii) BRRI dhan50 and ix) Kataribhog-1. Data were collected on different aspects of growth, yield attributes and yield of aromatic rice. Significant differences existed among different aromatic rice varieties with respect to yield and yield attributing parameters. The result revealed that BRRI dhan80 exhibited its superiority to other tested variety in terms of seed yield (4.63 t ha -1 ). The higher amount of yield from BRRI dhan80 was possibly aided by the highest number of leaves hill -1 at harvest (57.00), the lowest number of non-effective tillers hill -1 at harvest (1.09), the highest weight of 1000-grain (26.13 g), the highest biological yield (9.76 t ha -1 ) and harvest index (47.40%) than other tested varieties in this experiment. On the other hand, the variety BRRI dhan5 (Dulabhog) returned with significantly the lowest grain yield (2.29 t ha -1 ) among all the varieties under study. The highest yield advantage was recorded from BRRI dhan80 over check variety Kataribhog-1 which was 47.92%. In case of BRRI dhan75, yield advantage over check variety Kataribhog-1 was 38.34% and BRRI dhan70 showed 34.50% higher yield over the check variety. BRRI dhan37 showed 3.19% yield advantage. These four varieties showed positive yield advantage over the check variety under study. BRRI dhan5 (Dulabhog), BRRI dhan34, BRRI dhan38 and BRRI dhan50 did not have positive yield advantage over check variety Kataribhog.