Broccoli (Brassica oleracea L.) is an important winter vegetable under the cole groups, which has great market potential in India and Gulf countries. The climatic condition of Terai region of West Bengal is highly suitable for broccoli cultivation that argued for the possibility of getting more net profit of the farmers from cultivation of this high valued crop. But due to the micronutrient deficiency in the soil of terai region, broccoli not gives good return for this reason the experiment was done to give a recommendation to the farmers for better yield. The present experiment was carried out to examine the effect of boron, zinc and molybdenum on broccoli (cv-green magic) with sole doses of these three micronutrients were fixed 0.3% for borax, 0.5% and 1.0% zinc sulphate as per and 0.03% and 0.05% per ammonium molybdate solutions as sole as well as their combined treatments on the yield and growth parameters of the broccoli. Among the sole treatments, application of zinc showed significantly higher effect on leaves per plants, leaf area, total chlorophyll content of the leaf and ascorbic acid content in the head. Significantly higher plant height showed by the treatments 0.03% Mo+1% Zn (59.10cm) and 0.05% Mo + 1% Zn (59.05cm), respectively. Irrespective of the treatments Zn had significantly positive influence in increasing the number of leaves per plant, especially at 0.5% dose. Significantly highest ascorbic acid was recorded at i.e., 61.54mg/ 100g of fresh head weight along with this significantly highest leaf area were recorded at combination treatment of 0.3%, 0.03% Mo and 0.5% Zn (454.35 cm2) and sole treatment of 0.5% Zn (452.33 cm2). Combination of 0.3% borax, 0.03% ammonium molybdate and 0.5% zinc sulphate were recorded to be best for most of the traits.

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The present experiment was laid out in randomized block design maintaining three replications during the Rabi season of 2017-18 on three major Rabi season crops viz., cabbage, cauliflower, and French bean under four treatment viz., Sabuj Gold as principle sole nutrient supplement with recommended organic and inorganic plant protection inputs as well as recommended standard crop-specific inorganic cultivation practice to evaluate the bio-effectiveness of SABUJ GOLD as main organic manure. The result showed that 100% Organic Manure (Sabuj Gold as a primary nutrient supplement) + full organic recommended certified inputs (plant protection measures) had a predominant significant effect on almost all the characters under study, specifically plant height (26.89 cm in cabbage, 45.32 cm in cauliflower and 55.24 cm in French bean), number of primary branches (7.84 in French bean), leaf quantitative parameters, individual head weight in cabbage (1.32 g), curd weight of cauliflower (1.31 g), pod weight (3.37 g) and pod per plant (46.34) in French bean, yield (32.37 t/ha in cabbage, 17.58 t/ha in cauliflower and 8.94 t/ha in French bean), ascorbic acid in cabbage (65.24 mg/100g) and total chlorophyll in cabbage (445.61 mg/100 g). However, 100% Organic Manure (Sabuj Gold as a primary nutrient supplement) + full recommended inorganic supplement (plant protection measures) showed a significant effect on multiple characters such as  germination percentage (88.52 %) and ascorbic acid (31.62 mg/100 g) in cabbage, total chlorophyll (424.75 mg/ 100 g in cauliflower and 134.95 mg / 100g in French bean). From the above discussion, it could be concluded that Sabuj Gold as a substitute for inorganic plant nutrient along with organic or inorganic plant protection measures could be very effective in enhancement of important yield and quality-related characters of different commercially important vegetables.

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