Persistent organic pollutants (POPs) of soil mainly exhibit toxic characteristics that posses hazard to whole mankind. These toxic pollutants includes several group of compound viz., polychlorinated biphenyls, polybrominated biphenyls, polychlorinated dibenzofurans, polycyclic aromatic hydrocarbons, organophosphorus and carbamate insecticides, herbicides and organic fuels, especially gasoline and diesel. They can also be complex mixture of organic chemicals, heavy metals and microbes from septic systems, animal wastes and other sources of organic inputs. Phytoremediation is an emerging technology which can be used for remediation of soil from organic pollutants. In this chapter an attempt has been made to discuss about the sources of organic pollutants, factors that influenced the uptake of organic pollutants by plants, the different mechanism responsible for organic pollutants, phytoremediation of organic pollutants and their advantages and limitation.

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A field experiment was carried out at the Instrutional-Cum-Research farm. Assam Agricultural University, Jorhat in the year of 2017-18, during Rabi season. The treatment consisted of two different factors, viz., four dates of sowing 31st October (D1), 10th November (D2), 20th November (D3) and 30th November (D4) and three row spacing 60 cm x 20 cm (S1), 45 cm x 20 cm (S2) and 30 cm x 20 cm (S3). Experimental findings revealed that almost all the yield attributes such as number of cobs per plant, cob length, cob girth, cob weight and baby corn yield were significantly influenced by different dates of sowing. In most of cases early sowing on 31st October and 10th November were statistically at par and shown their superiority over late sowing on 20th November and 30th November sown crop. Results showed that wider spacing of 60 cm x 20 cm had significantly higher number of cobs plant-1, weight of cob and length of cob and cob girth, however, the lowest values were found at 30 cm x 20 cm spacing. Yield of cob with husk, without husk was found to be the higher under spacing 45 cm x 20 cm (88.24 q ha-1 and 20.79 q ha-1, respectively). Cob yield with husk obtained under 45 cm x 20 cm spacing increased by 8.40, 17.57 per cent over other spacing viz., 60 cm x 20 cm and 30 cm x 20 cm, respectively.

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