Soil unaffected by seawater in Aceh after tsunami, say scientists

Soil unaffected by seawater in Aceh after tsunami, say scientists

Agence France-Presse, Paris

Fears that the most fertile agricultural land in the Indonesian
province of Aceh has been wrecked by seawater that swept inland
from the Dec. 26 tsunami are unfounded, scientists say.

Waves swept up to seven kilometers inland as a result of the
massive earthquake offshore, killing 131,000 people and covering
nearly a third of Aceh's agricultural land with saltwater and sea
mud.

The biggest worry has been over rice, the staple food in Aceh,
as rice plants are sensitive to salt contamination.

But experts say that salt from the tsunami did not penetrate
very far into the coastal clay soils where rice is grown, and
that irrigation with salt-free water has been found to solve the
problem, the British weekly New Scientist says.

Indeed, aid money to improve irrigation has helped some rice
farmers to get better harvests than before the tsunami, it
reports in next Saturday's issue.

Peanut farmers, though, have been harder hit because salt
penetrates deeper into the sandy soils in which peanuts are
grown.

However, there are hopes that when the wet season grows, the
rain will wash out a great deal of the salt, improving the
chances for next year's crop.

The news is not entirely good, however.

Some rice fields remained slathered with thick sea sediment,
and in parts of Aceh's flood plain, changes in drainage patterns
wreaked by the tsunami mean that once-rich agricultural land is
regularly inundated by seawater that rushes up tidal creeks. Such
problems may take as long as a decade to fix.

The research was led by Australian specialist Peter Slavich of
the New South Wales Department of Primary Industries, together
with scientists from Indonesia's Soil Research Institute.

The tsunami killed an estimated 217,000 people in countries
around the northern rim of the Indian Ocean and caused billions
of dollars in damage.