JAKARTA: Indonesia's Oil Palm Farmers Union said on Sunday it supported the government's ban on palm oil exports, calling it a temporary measure that was needed to ensure supply and affordability of cooking oil in the domestic market.

The statement came after President Joko Widodo announced on Friday that the world's top palm oil producer and exporter would stop overseas shipments of cooking oil and its raw material from April 28 to bring down domestic prices.

The export ban has sent soybean oil prices soaring to a record high amid heightened concerns about already depleted global supplies of alternative vegetable oils.

The farmers union said it appreciated the government's "temporary ban", blaming palm oil companies of "forgetting their duty to fulfill domestic needs."

"We believe in measures taken by the president to ensure domestic supply of cooking oil," its secretary general Mansuetus Darto said in a statement.

[Palm logs weekly loss, Indonesia’s export ban to spur prices next week]1

Some politicians have criticised the export ban saying it would hurt millions of smallholder farmers, according to media reports, while economists warned of losses in export earnings.

Indonesia's palm oil exports are usually worth around $3 billion a month, Bahana Securities said.

The government has yet to say how long the ban would take effect and the types of palm oil products that would be affected.

Global prices of crude palm oil have surged to historic highs this year amid rising demand and weak output from top producers Indonesia and Malaysia.

Retail cooking oil prices in Indonesia have risen more than 40%. Previous efforts to tame prices, including subsidies and an export restriction between late January and the middle of March, have not only failed to bring down prices, but also exacerbated the rise in global prices.

Darto of the farmers union said refineries in some areas have already cut their purchase prices of palm oil fresh fruit bunches, even though they have not reduced buying levels, as factories speculate over how long the ban would last.