To determine the optimal nutrient management packages for BARI Til-4 in Charland areas and increase production along with farmers’ income, an experiment was conducted under Charland at the multi-location testing site, Bhuapur of the On-Farm Research Division, Bangladesh Agricultural Research Institute, Tangail under AEZ-8 Tangail during two consecutive years of Kharif 2016 and 2017.Three different fertilizer doses were used, namely T1: 107-39-32-17-3.6-0.6 kg ha-1 (based on soil test), T2: 37-20-16-13-2-1 kg ha-1 + 5 t ha-1 cowdung (based on IPNS), and T3: 18-8-18-0-0-0 kg ha-1 NPKSZnB. (farmers practice). Between the two years, among the treatments, the soil test-based fertilizer dose provided the highest seed yield (1.39 t ha-1), which was comparable to the IPNS-based fertilizer dose (1.29 t ha-1), while the farmers' practiced fertilizer dose produced the lowest seed yield (0.78 t ha-1). T1 treatment resulted in a yield increase of 7.75 and 78.20 percent when compared to T2 and T3 treatments, respectively. The highest gross return (Tk. 65500 ha-1) and gross margin (Tk. 27637.64 ha-1) from T1 treatment, whereas the lowest return (Tk. 41500 ha-1) and gross margin (Tk. 2505.04 ha-1) were obtained from farmer practice. According to the overall results, a soil test-based fertilizer dose may be recommended in Charland sections of AEZ-8 for increased production and economic return.

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