Weed flora in rice in Bhubaneswar (Orissa, India)
1988
Patro, G.K. | Nanda, K.C. (Orissa Univ. of Agriculture and Technology, Bhubaneswar, Orissa (India). Agronomy Dept.)
Weeds seriously limit rice production at Bhubanewar, Orissa. In 1985 wet season, weeds in rice fields in uplands, medium lands, lowlands, and swampy and waterlogged fields were surveyed using random sampling of ten farmers from cash site type. From each field five 1- x 1-m area were randomly selected. Only weeds common in all samples are reported here. 1- Uplands. Grasses: Digitaria sanguinalis, Echinochloa colona, Eleusine indica, Eragrostis nutans, Panicum antidotale, Cynodon dactylon. Sedges: Cyperus rotundus, C. iria, Fimbristylis dichotomia. Broadleaved weeds; Senna obtusifolia, Crotolaria juncea, Celosia argentea, Sida rhombifolia. 2. Medium lands. Grasses: Echinochloa grus-galli, Eragrostis nutans, Paspalum conjugatum. Sedges: Cyperus elatus, C. esculentus, C. brevifolius. Broadleaved weeds: Murdannia nudiflora, Ludwegia perrenis, Corchorus aestrans, Aeschynomene americana, A. aspera. The fern Marsilea quadrifolia was also found. 3. Lowlands. Eragrostis cilianensis, Oryza sp. (wild rice), Cyperus exaltatus, Scirpus supinus. 4. Swampy lands and waterlogged fields. Pistia stratiotes, Glyceria sp., Glycine sp., Ulothrix sp., Spirogyra sp., and Chara sp.
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