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Phytochemical studies on biodiversity of some weeds in paddy ecosystem

R. Sagaya Giri and S. Dhanalakshmi

Phytochemicals are non nutritive plant chemicals that contain protective disease preventing compounds. Nowadays, it becomes centre of attraction for the people in the health care profession & pharmaceutical industry. The main intention of this paper is to bring the weeds of the paddy field which has a wide spectrum of phytochemicals into lime light. These weeds are at endangered position due to prolonged application of chemical weedicides to the paddy field. This now create a new ecological problem by upsetting the biotic balance of the environment. So these ecofriendly weed flora are to be conserved and protected.