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Birsa Agricultural University, Ranchi

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20171
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Subject: Horticulture × Author: Bibhuti, Thakur Omprakash × End date: 2019 × Start date: 2013 × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Effect of micronutrients (Boron, Zinc and Molybdenum) on growth and yield of broccoli (Brassica oleracea L.var. italica Plenck) cv. Dynasty
    (Birsa Agricultural University, Ranchi, Jharkhand-6, 2017) Bibhuti, Thakur Omprakash; Tiwary, A.K.
    Sprouting broccoli is one of the most nutritious cole crops. Although not so popular yet in Jharkhand, it is slowely gaining popularity during the last few years among the consumers. Broccoli (Brassica oleracea L.var italica Plenck) is an important winter season exotic vegetable from the Brassicaceae family as well as heavy feeder of plant nutrients. Plant nutrition is one of the prime considerations for getting higher yield of any crop. Mineral fertilizer improves growth and yield of broccoli due to the role of nitrogen, phosphorus, and potassium on the meristematic activity. Boron, zinc and molybdenum are essential micronutrients required for normal plant growth, development and qualities. Plants differ widely in their requirements, but the ranges of deficiency and toxicity are narrow. Boron, zinc and molybdenum deficiencies are very common in Cole crops particularly in broccoli which cause many anatomical, physiological, and biological changes. Hence the deficiency has threatened the ever increasing areas and marketability of it. The present investigation was attempted to find out the growth, yield, and quality of broccoli on the aspects of minor mineral (boron, zinc and molybdenum) nutrition. The experiments were conducted in experimental farm of Horticulture department at the Birsa Agricultural University Kanke, Ranchi, Jharkhand, during 2015–17 with three levels of borax (5, 15, and 25 kg/ha), zinc sulfate (10,20, and 30 kg/ha) and ammonium molybdenum ( 1.0, 1.5, and 2 kg/ha) as basal dose; and foliar application of Borax (0.6 %, 0.4 % and 0.2 %), Ammonium Molybdenum (40 μg/lit, 30 μg/lit and15 μg/lit) and Zinc Sulfate (4 %, 2 % and 1%) at 15, 45,and 75 DAT. The data were analysed in Randomized Block Design manner. It was found that application of T14 (15 kg borax, 20 kg zinc sulfate and 1.5 kg ammonium molybdate as basal dose and with three foliar sprays of 0.4 % borax, 30 μg/lit ammonium molybdate and 2% of zinc sulfate) was found to be the most effective i.e. 32.43 cm and 16.78 cm in case of plant height and stem length respectively. However, T15 was at par with T14. The highest favourable response in case of other growth and growth behavior like no. of leaves (17.07), plant spread (4914.94 cm2), stem diameter (4.20cm) and head initiation (58.77 days) was observed in T15. T14 was also at par with T15. Similarly yield attributing characters like head diameter (22.99 cm), head weight (348.0 g), sprout weight (57.06 g), no. of sprout (4.90) and yield (171.90 Q/Ha) were found highest in T15. However, T14 was also at par with it. Again among different combinations of borax and ammonium molybdate, T11(15 kg borax and 1.5 kg ammonium molybdate as basal and with a foliar spray of 0.4 % of borax and 30 μg/lit of ammonium molybdate) reflected highest growth and yield (157.83 Q/Ha) followed by (148.53 Q/Ha) in T12 (25 kg borax and 2 kg ammonium molybdate as basal dose and foliar spray of 0.2 % of borax and 15 μg/lit of ammonium molybdate) which were at par with each other. In case of performance of individual element borax performed better than zinc sulfate and ammonium molybdate. Considering growth, growth behavior, yield, yield attributes and Cost – Benefit ratio (3.11) T14 emerged as most favourable and profitable treatment.