Vorn Pov, the leader of the organization IDEA, was among 23 people arrested in the January 2014 crackdown.
Authorities have released few details about the deaths, and would not confirm reports of a further two deaths of North Koreans, who were admitted to the hospital.
Cambodian farmers are increasingly growing organic rice and vegetables in some places, but there is no official certification available.
At least five people died in a brutal government crackdown during two days of rioting in January 2014.
Police and other security personnel halted a group of mourners on the outskirts of Phnom Penh Sunday that had planned to hold a Buddhist ceremony for protesters killed in early 2014.
Salt farmers in Kampot and Kep provinces say that production almost doubled this year as the annual rains arrived late, causing droughts in parts of Cambodia.
Hun Manet made the defense in a video clip posted on the prime minister’s official Facebook page Wednesday, amid heightened political tensions over the border.
According to CEDAC, about 250 farmers have begun growing organic vegetables in four provinces—Takeo, Kompong Speu, Kompong Chhnang and Siem Reap.
Human rights groups and land activists have accused the parliament of only offering blessings to dignitaries, and ignoring the voters who elect its 123 members.
The prison population in Cambodia has swelled to 17,522 people, up 18 percent from last year.
Road accidents cost the economy an estimated $300 million annually, and the death toll from road accidents keeps rising in Cambodia.
Hun Sen also announced that he would not offer his signature for an amnesty petition for Sam Rainsy and other Cambodia National Rescue Party leaders.