Asian Journal of Advances in Agricultural Research

A field experiment was conducted at the Bangladesh Agricultural University's Department of Soil Science research site to investigate the impact of varying irrigation regimes on the growth, yield, and yield-related attributes of the wheat cultivar BARI Gom 21 (Shatabdi). The study employed a Randomized Complete Block Design (RCBD) with three replications. The experiments consisted of 6 treatments designated as T₀ = control or no irrigation, T₁ = 1/ crown root initiation (CRI), T₂ = 2/CRI+ tillering, T₃ = 3/ CRI+ tillering + booting, T₄ = 4/ CRI+ tillering + booting + earing, T₅ = 5/ CRI+ tillering + booting + earing + milking number of irrigations at different growth stages. All irrigation treatments were shallow, with a depth of 2 cm. We applied irrigation treatments five times during the crown root initiation (CRI), tillering, booting, earing, and milking. We applied all irrigation treatments in chronological order based on the numbers. Treatment T₅ (5 number of irrigations) exhibited superior performance across all measured agronomic traits. It significantly outperformed other treatments in terms of the highest plant height (90.80 cm), effective tillers number hill^-1 (5.20), spike length (12.40 cm), grains number spike^-1 (41.03), grain yield (4.067 t ha^-1), 1000-grain weight (55.11 g), straw yield (5.067 t ha^-1), and yield plot^-1(9.133 t ha^-1). In all cases, the non-irrigated or control treatment gave the lowest result. Ultimately, the experiment suggests that five times application of irrigation showed superior results compared to other treatments for successful wheat production.