A handbbok on Weed Control in Rice.pdf
A handbbok on Weed Control in Rice.pdf
A handbbok on Weed Control in Rice.pdf
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Lowland rice weeds / CYPERACEAE (sedge family)<br />
<strong>Weed</strong> name: Cyperus difformis L.<br />
Syn<strong>on</strong>yms: N<strong>on</strong>e<br />
Local names:<br />
Country Comm<strong>on</strong> name<br />
Australia dirty dora<br />
France souchet a petites fleurs<br />
Japan tamagayatsuri<br />
Korea albang d<strong>on</strong>g sani<br />
Malaysia rumput air<br />
Nigeria imeremere (Yoruba)<br />
Philipp<strong>in</strong>es baki-baki (Il<strong>on</strong>go)<br />
ballayang (Tagalog)<br />
Sierra Le<strong>on</strong>e a-kek-a-pot<br />
Thailand kok ka-narg<br />
USA smallflower, umbrella<br />
sedge<br />
Life cycle: An annual sedge that can<br />
grow as tall as 75 cm. Normally propa-<br />
gates by seeds.<br />
Habitat: Adapted to moist lowland<br />
soils or flooded areas.<br />
<strong>Weed</strong>y nature: A heavy seed<br />
producer. Can complete <strong>on</strong>e life cycle<br />
<strong>in</strong> about 30 d. Through high seed<br />
producti<strong>on</strong> and short life cycle, can<br />
spread rapidly to become a dom<strong>in</strong>ant<br />
weed <strong>in</strong> a ricefield.<br />
Agricultural c<strong>on</strong>cern: Produces a<br />
dense stand with<strong>in</strong> a short time, thus<br />
compet<strong>in</strong>g with rice for moisture and<br />
nutrients. Has caused rice yield reduc-<br />
ti<strong>on</strong>s of 12-50%.<br />
10 <strong>Weed</strong> c<strong>on</strong>trol handbook<br />
Seedl<strong>in</strong>g<br />
Inflorescence<br />
Seed, magnified<br />
Mature plant
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