This document lists and describes 42 different weed species that are commonly found in lowland rice fields. For each weed, it provides the common name and classification as an annual sedge. The weeds described include well known species such as barnyardgrass, nut sedge, and water spinach, as well as some less common weedy plants that can impact rice cultivation.

1. 1
Weed in Lowland
Rice Field
By
Dr. Ibrahim H. Abou El-Darag
Rice Research & Training Center, Sakha 33717,
Kafr EL-Sheikh, Egypt.
E-mail:aboueldarag@yahoo.com

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6. 6
Echinochloa crus-galli
Common name:
Barnyardgrass
Type: Annual sedge

7. 7
Echinochloa colona
Common name:
Jungle rice
Type: Annual sedge

8. 8
Cyperus difformis
Common name:
Umbrella sedge
Type: Annual sedge

9. 9
Cyperus rotundus
Common name:
Nut sedge
Type: Annual sedge

10. 10
Scirpus jancoides
Common name:
Ricefield bulrush
Type: Annual sedge

11. 11
Eleocharis perennial
Common name:
Spikerush
Type: Annual sedge

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Bergia capensis
Common name:
_____
Type: Annual sedge

13. 13
Ammannia beccifera
Common name:
Blistering Ammania
Type: Annual sedge

14. 14
Xanthium spinosum
Common name:
Cocklebur
Type: Annual sedge

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Portulaca oleraces
Common name:
Purslane
Type: Annual sedge

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17. 17
Azolla pinnata
Common name:
Mosquito fern
Type: Annual sedge

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Bolboschoenus maritimus,
Common name:
Sea club rush, or Puruagrass
Type: Annual sedge

19. 19
Ceratopteris thalictroides
Common name:
Water sprite
Type: Annual sedge

20. 20
Commelina benghalensis
Common name:
Dayflower, bengal
spiderwort
Type: Annual sedge

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Commelina diffusa
Common name:
Common spiderwort,
Bird Bill Dayflower
Type: Annual sedge

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Cynodon dactylon
Common name:
Bermuda grass , couch grass
Type: Annual sedge

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Cyperus esculentus
Common name:
Yellow Nutsedge
Type: Annual sedge

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Cyperus rotundus
Common name:
Purple Nutsedge
Type: Annual sedge

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Eclipta prostrata
Common name:
Eclipta, false daisy
Type: Annual sedge

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Enhydra fluctuans lour
Common name:
Water Cress
Type: Annual sedge

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Fimbristylis miliacea
Common name:
Globe fingerush
Type: Annual sedge

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Ipomoea aquatica forsk
Common name:
Water convoulus, swamp morning glory
Type: Annual sedge

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Ipomoea cairica
Common name:
Cairo- or coast morning glory
Or ivy-leaved morning glory
Type: Annual sedge

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Ischaemum rugosum
Common name:
Winkle duck-beak, saramattagrass
Type: Annual sedge

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Ludwigia octovalvis
Common name:
Shrubby ludwigia
Type: Annual sedge

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Marsilea crenata
Common name:
Water clover, clover fern
Type: Annual sedge

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Nymphaea nouchali
Common name:
Star water lily
Type: Annual sedge

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Oryza barthii
Common name:
Wild rice
Type: Annual sedge

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Oryza longistaminata
Common name:
Longstamen Rice or Red Rice
Type: Annual sedge

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Paspalum distichum
Common name:
Knotgrass
Type: Annual sedge

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Pistia stratiotes
Common name:
Water lettuce
Type: Annual sedge

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Sagittaria guaynensis
Common name:
Arrowhead-lily
Type: Annual sedge

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Scirpus articulatus
Common name:
Hard-stemmed bulrush
Type: Annual sedge

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Sphenoclea zeylanica
Common name:
Gooseweed
Type: Annual sedge

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Imperata cylindrica
Common name:
Blady grass
Type: Annual sedge

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