Effect of sowing date and irrigation on the performance of mustard (Brassica spp. L.)

To observe the growth and yield attributes of mustard under different sowing date and irrigation frequency, a field experiment was conducted with mustard (Brassica sp.) var. “BARI Sarisha-14”. The experiment was carried out at the research field of the Department of Crop Science and Technology, Rajshahi University, Rajshahi during the period from October, 2023 to March, 2024. The experiment consisted of three sowing date i.e. 31^st October, 10^th November and 20^th November as well as three irrigation frequency viz. no irrigation, 2 times irrigation and 3 times irrigation. The results revealed that different treatments significantly affected the growth and yield attributes of BARI Sarisha-14. The combination of 20^th November sowing date (S₃) and three times irrigation (I₂) produced the maximum plant height, no. leaves per plant, no. of branches per plant, minimum days required to 50% flowering and maturity, pod length, no. of pods per plant, no. of seeds per plant, 1000 seeds weight and seed yield. On the other hand, all the studied parameters except days to 50% flowering and maturity found to be lowest in 31^th October sowing (S₁) date along with no irrigation (I₀). Hence, the study concluded that 20^th November sowing date (S₃) and three times irrigation (I₂) can be used for getting the targeted yield as well as desired return from BARI Sarishal-14 cultivation in “High Ganges River Floodplain zones” of Bangladesh.

Key words: Sowing date, irrigation, growth and yield, mustard.

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