Some Weed species of Tarai Region of Kumaun, Uttarakhand

The present floristic and ethnobotanical studies were conducted in the year 2008 to 2011 in central tarai region. The study site includes, Pantnagar and Kichha tehsil in Udham Singh Nagar and Lalkuan in Nainital district. The exploration was taken in three sites and eight communities in different seasons. During the floristic study, 429 plant species were collected; in which 121 species were weed. In weed species, the number of herb is maximum with 75 followed by grass 18, sedge 17, under shrub 06 and shrub 05 species. The maximum number of weed species was found in Site I i.e. in Pantnagar 121 followed by 83 species in Site II and 82 in Site III Kichha and Lalkuan respectively. The alternative use of weed species was based on oral communication by local as well as migrant people and as cited in literature. The present information on the distribution of various weed species in different habitats, crop fields of the three sites is an important investigation and has an applied significance in effective weed management and crop yield improvement process.