Varietal response of capsicum to different levels of salinity cultivated in the farm land areas of Mymensingh, Bangladesh

An experiment was carried out to evaluate the effect of salinity and three varieties of capsicum on their growth and yield under poly house condition at Horticulture farm, Bangladesh Agricultural University, Mymensingh during the period from November, 2023 to March, 2024. The experiment consisted of four level of salinity viz., S₀: 0 ds/m (control), S₁: 4 ds/m, S₂: 8 ds/m and S₃: 12 ds/m and three capsicum varieties viz., V₁: BARI Capsicum-1, V₂: BARI Capscum-2 and V₃: Sweet Beauty F₁. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The growth and yield parameters of capsicum were significantly influenced by salinity levels while the varietal difference was not significant on most of the growth parameters except for yield parameters where significant variation among varieties was observed. Different salinity levels showed significant effects on growth and yield parameters of capsicum. Growth parameters and yield of capsicum decreased with the increase of salinity levels. The control treatment S₀ (0 dS/m) gave the highest capsicum yield (294.51 g per plant and 8.84 ton/ha) followed by S₁ (3 dS/m) treatment, which provided 203.08 g per plant and 6.10 ton/ha yield; whereas S₃ (12 dS/m) treatment produced lowest yield (85.74 g per plant and 2.57 ton/ha). The variety Sweet Beauty F₁ was found superior to BARI Capsicum-1 and BARI Capsicum-2 in case of yield parameter. Sweet Beauty F₁ produced highest yield of 231.34 g per plant and 6.94 ton/ha respectively, while the lowest yield was obtained from BARI Capsicum-2 which was 161.15g per plant and 4.83 ton/ha. Treatment combination of S₀ (0 ds/m) with V₃ (Sweet Beauty F₁) produced higher yield (374.73 g per plant and 11.24 ton/ha) followed by treatment combinations of S₀ (0 ds/m) with V₁ (BARI Capsicum-1) with 260.34 g per plant and 7.81 ton/ha. While the lowest yield (81.76 g per plant and 2.45 ton/ha) was obtained from treatment combinations of S₃ (12 ds/m) and V₂ (BARI Capsicum-2).

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