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A study was conducted in a net house to evaluate the effect of seed treatment with nano zinc oxide (250, 500, 750 and 1000 μg ml) and nano copper oxide (50, 100, 200 and 400 μg ml) on seed germination and growth of barley under pot conditions. The results were compared with macro forms (ZnSO4, ZnO, CuSO4 and CuO). It was found that 500 μg ml of nZnO enhanced germination percentage and shoot length as compared to other treatments while other plant growth attributes were similar in all the treatments except the control. In case of nCuO, highest germination percentage was recorded with 100 μg ml nCuO. Spikelet number and shoot fresh weight were found higher at 200 μg ml nCuO, while stem dry weight, shoot length and root fresh weight were highest in the treatment having macro CuSO4. However all the plant growth attributes were significantly higher in all the treatments than control. Our study indicated that micronutrients requirement can be fulfilled using nano-metal oxides through seed treatment to increase the growth and yield in barley.

Evaluation of nano-metal oxides for increased fodder production in barley (Hordeum vulgare L.)