Effect of planting time on the growth and yield of different aromatic rice varieties

Abstract

The experiment was conducted at the Research Field of Sher-e-Bangla Agricultural University (SAU), Dhaka during Aman season, 2020-2021 to effect of planting time on the growth and yield of different aromatic rice verities. The experiment consisted of two factors: A) Varieties-Badshabhog (V₁), Modhumala (V₂), Chiniatap (V₃), Kataribhog (V₄), Zirabhog (V₅), Kalizira (V₆), and B) Transplanting time – T₁ = (20 DAS), T₂ = (30 DAS), T₃ = (40 DAS). The two factor experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and the differences between means were separated by both Duncan’s New Multiple Range Test (DMRT) and Least Significant Difference (LSD) test at 5% level of probability. In case varieties, highest Plant height, No. of tiller plant^-1, Booting of 50% plant, Emergence of (1^st, 50, 100)% panicle, Starting of maturity, 100% maturity, Harvesting day (DAT), Life cycle (DAS) duration, Life cycle duration (DAT), No. of fertile tiller plant^-1, No. of sterile tiller plant^-1, Length of panicle, Seed weight plant^-1, Dry weight plant^-1, No. of filled grain panicle^-1, No. of unfilled grain panicle^-1, 1000grain weight, Grain weight plant^-1, Straw weight plant^-1, Biological yield (ton ha^-1), Grain yield (ton ha^-1 ), Straw yield (ton ha^-1), was V₅, V₂, V₄, V₄, V₄, V₄, V₅, V₅, V₅, V₅, V₅, V₂, V₆, V₅, V₄, V₆, V₆, V₅, V₄, V₄,V₁, V₁, V₄, V₆ respectively and lowest grain yield ha^-1 was observed in V₅(3.5h) ton ha^-1. In case of transplanting time, most of the yield character and highest grain yield was observed in T₃ (40 days seedling age), and others no significant difference. In case interaction, highest Plant height, No. of tiller plant^-1, Booting of 50% plant, Emergence of (1^st, 50, 100)% panicle, Starting of maturity, 100% maturity, Harvesting day (DAT), Life cycle (DAS) duration, Life cycle duration (DAT), No. of fertile tiller plant^-1, No. of sterile tiller plant^-1, Length of panicle, Seed weight plant^-1, Dry weight plant^-1, No. of filled grain panicle^-1, No. of unfilled grain panicle^-1, 1000grain weight, Grain weight plant^-1, Straw weight plant^-1, Biological yield (ton ha^-1), Grain yield (ton ha^-1 ), Straw yield (ton ha^-1), was V₅T₁, V₄T₁, V₄T₁, V₄T₁, V₄T₁, V₄T₁, V₅T₁, V₅T₁, V₅T₃, V₅T₁, V₅T₃, V₂T₂, V₃T₂, V₅T₁, V₄T₁, V₄T₁, V₆T₂, V₁T₁, V₅T₁, V₅T₂,V₄T₃, V₁T₁, V₁T₁, V₄T₃ and V₁T₁ respectively. The results of the numerous characters evaluated in the studies also revealed that there are certain beneficial characters in local aromatic rice cultivars that can be exploited through breeding.