Women in Papua New Guinea's Highland region are killing their male babies to end a tribal war that has gone on for more than 20 years.

Two women from the Eastern Highlands spoke of the slaughter to PNG's National newspaper during a three-day peace and reconciliation course in the region's capital of Goroka.

Rona Luke and Kipiyona Belas, from two warring tribes, said male infanticide reduced the cyclical payback violence infamous in Highlands tribal fights.

If women stopped producing males, their tribe's stock would go down and this would force the men to end their fight, the women said.

"All the womenfolk agreed to have all babies born killed because they have had enough of men engaging in tribal conflicts and bringing misery to them," Luke said.

The women could not give a figure on how many male babies had been killed.

Belas said getting food was hard as husbands kept fighting and mothers and children were left to fend for themselves.

The Salvation Army is working with various tribes to bring peace to the warring groups, one particular fight continues after starting in 1986 over sorcery claims.

The Salvation Army told the Australian Associated Press that women were so fed up with the ongoing violence that they were taking drastic steps.

"This situation shows the extreme frustration the women have with the men in these areas," a spokesman said.

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