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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Upland rice weeds / PORTULACACEAE (purslane family)<br />
<strong>Weed</strong> name: Portulaca oleracea L.<br />
Syn<strong>on</strong>yms: N<strong>on</strong>e<br />
Local names:<br />
Country Comm<strong>on</strong> name<br />
Brazil beldroega<br />
Cambodia kbetchoun (Khmer)<br />
France comun pourpier<br />
Ghana adwera (Twi)<br />
India baralunia, kufa (Orya)<br />
karie, keerai (Tamil)<br />
Ind<strong>on</strong>esia gelang<br />
Malaysia gelang pasir<br />
Mauritius pourpier<br />
Mexico verdolaga comun (Spanish)<br />
Myanmar mya-byit<br />
Nigeria esan omode (Yoruba)<br />
Pakistan kulfa, lunak<br />
Philipp<strong>in</strong>es ulasiman (Tagalog)<br />
Thailand phak bia yai<br />
Vietnam rausam<br />
Zambia yelele (Chit<strong>on</strong>ga)<br />
Life cycle: An annual broadleaf with<br />
succulent and fleshy stems that are<br />
sometimes reddish brown. Grows as<br />
tall as 50 cm. Propagates by seeds<br />
and stem cutt<strong>in</strong>gs. Produces<br />
numerous black seeds that normally<br />
are not dormant.<br />
Habitat Grows <strong>in</strong> upland fields.<br />
<strong>Weed</strong>y nature: A prolific seed<br />
producer that grows quickly and<br />
flowers and produces seeds throughout<br />
the year. Difficult to c<strong>on</strong>trol by<br />
cultivati<strong>on</strong> because plants with flower<br />
buds have enough water stored <strong>in</strong> the<br />
stems and leaves to complete seed<br />
producti<strong>on</strong> after they have been cut.<br />
Cut fleshy stems root easily up<strong>on</strong><br />
c<strong>on</strong>tact with soil. Under drought<br />
stress, sheds its leaves and survives<br />
until water becomes available. Can<br />
complete its life cycle with<strong>in</strong> 6 wk.<br />
Seeds can rema<strong>in</strong> viable for a l<strong>on</strong>g<br />
time.<br />
Agricultural c<strong>on</strong>cern: Can cause<br />
30% yield loss.<br />
Seedl<strong>in</strong>g<br />
Seed, magnified<br />
Inflorescence<br />
Mature plant<br />
<strong>Weed</strong>s worldwide 37
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