Easin Ali, Md. Alamgir Kabir, Muhammad Salim, Ahmed Khairul Hasan, Md. Azihullah, Md. Omar Ali, S. M. Abdul Alim, Md. Mohimenul Islam, Md. Shah Abdullah Al Mamun and Md. Selim Reza
Abstract
An experiment to evaluate the growth and production of BARI Gom-26 was carried out at Bangladesh Agricultural University’s Agronomy Field Laboratory from November 2022 to March 2023. The experiment compared various nitrogen amounts and planting dates. Five nitrogen levels (90, 100, 110, 120, and 130 kg N ha-1) were taken into consideration along with three planting dates (November 15, November 25, and December 5, 2022). Three replications of a Randomized Complete Block Design (RCBD) were used in the trial. On March 1, March 18, and March 28, 2023, respectively, harvesting was done independently. According to the findings, November 25th with 110 kg N ha-1 produced the highest grain yield (3.92 t ha-1). Furthermore, on November 25, 2022, 110 kg N ha-1 produced the highest scores of tillers per hill (6.11), effective tillers per hill (5.74), number of spikelets per spike (12.46), number of grain-1 (23.89), straw yield (7.07 t ha-1), and biological yield (11.00 t ha-1). On the other hand, on December 5 with 130 kg N ha-1, the lowest number per total tiller (3.54), number of effective tillers per hill (3.36), straw yield (3.46 t ha-1), and biological yield (6.22 t ha-1) were noted. As a result, November 25, 2022, was linked to the highest grain yield. On November 25, 2022, it was also observed that all three planting dates and all five nitrogen treatments worked effectively with 110 kg N ha-1. The best date to sow wheat was determined to be November 25, 2022, and this date is advised for wheat cultivation in Bangladesh in different agro-ecological zones.
Keywords: Wheat; Agro-ecological zone; Sowing date; Nitrogen level; Yield.