National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The field study was conducted to investigate weed flora diversity in rice crop during kharif season of 2020-21 in four development blocks viz. Naraini, Mahua, Badokhar Khurd and Baberu of Banda District in Uttar Pradesh State. This study identified and quantified the floristic composition of weeds in four different blocks. The number of monocot species recorded in the study was 13 (68 %), while the number of dicot species was 6 (32%). Out of 19 weed species 9 were annual, 7 perennial and remaining 3 were annual/perennial. Among several weeds Cyanotis axillaris, Cyperus difformis, Cyperus iria, Cyperus rotundus, Echinochloa colona, Echinochloa crus-galli, Eclipta alba, Fimbristylis miliaceae, Ludvwigia hyssopifolia and Monochoria vaginalis were present at all four study sites. Importance Value Index (IVI) of Monochoria vaginalis was 44.53 and 44.45 at Naraini and Mahua blocks, respectively. While, IVI value of Scirpus muritimus was 85.78 at Badokhar Khurd and IVI value of Caesulia axillaris at Baberu block was 40.96. Shannon diversity index was highest 3.01 BadokharKurd block, which was followed by Mahua (2.57), Naraini (2.56) and Baberu blocks (2.43). Weed flora at Naraini when compared with site Baberu was found more dissimilar (0.226) than the comparison between Badokhar Khurd and Mahua blocks. Weed species were uniformly distributed in rice field of Badokhar Khurd than other sites as indicated by Evenness Index.
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