Floristic composition and distribution of weeds in different crop ecosystems of Raipur (Chhattisgarh), India
Ajay Kumar Verma
The present communication pertains to major weeds of different crop ecosystems of Raipur in India. The study was based on extensive and intensive fields surveys made during different months of rainy and dry season 2020-2022. Surveys were made in five important crops ecosystems of total four developmental blocks of Raipur district during both Kharif and Rabi seasons of the year. Vegetation data were collected followed by quadrat methods and analyzed for density, frequency, diversity and importance value index (IVI) for each crop ecosystems. Interspecific association was also analyzed for ten dominant weed species followed by Cole’s index. During this period, a total of 80 weed species were reported of which 50 species were recorded from the transplanted Kharif rice fields, while 60 weed species were recorded from the Rabi crop fields. The five dominant weed families in the study area were Cyperaceae, Poaceae, Onagraceae, Asteraceae and Fabaceae.