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Abstract

A field trial was conducted during the year 2015-2016 the effect of zinc on the growth and yield of mustard, evaluating four Zn treatments against mustarded crop. The treatments included: T1 = Control, T2 = ZnSO4 @ 2.5 kg ha-1, T3 = ZnSO4 @ 5.0 kg ha-1 and T4 = ZnSO4 @ 7.5 kg ha-1. The experiment was conducted in a three replicated Randomized Complete Block Design with net plot size of 6m x 5m (30m2). It was noted that the all the growth and seed yield traits as well as in mustard was significantly (P<0.05) influenced by different Zinc levels. The application of Zn @ 7.5 kg ha-1 resulted 141.6 cm plant height, 22.0 branches plant-1, took 70.0 days to flowering, 81.3 days to maturity, 265.3 pods plant-1, 4.5 g seed index, 7.9 kg seed yield plot-1 and 2640.8 kg seed yield ha-1. Similarly, the application of Zn @ 5.0 kg ha-1 resulted 139.0 cm plant height, 16.3 branches plant-1, took 72.0 days to flowering, 86.6 days to maturity, 212.6 pods plant-1, 4.3 g seed index, 7.6 kg seed yield plot-1 and 2528.9 kg seed yield ha-1. The mustard crop supplemented with Zn @ 2.5 kg ha-1 resulted 134.3 cm plant height, 14.0 branches plant-1, took 76.0 days to flowering, 90.0 days to maturity, 188.6 pods plant-1, 3.3 g seed index, 7.2 kg seed yield plot-1 and 2394.7 kg seed yield ha-1. However, the control plots, where no Zn were applied resulted 128.3 cm plant height, 10.6 branches plant-1, took 79.0 days to flowering, 92.6 days to maturity, 145.6 pods plant-1, 2.8 g seed index, 6.7 kg seed yield plot-1 and 2238.0 kg seed yield ha-1.

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