Some of these men reside in the small village of Srosomthmy -- one of many tiny hamlets located within the district.
As they nurture their crops, most of their wives are attending an important meeting at the village's central gathering point to hear about an issue affecting not just them, but the whole country: tuberculosis.
TB is now the leading cause of death by an infectious disease, globally, and Cambodia has among the highest rates in the world, with 380 people estimated to be infected per 100,000 in the population in 2015.
It's a small country, with a population of just more than 15 million. Total numbers infected appear low when compared globally, particularly against countries such as India, which had almost 2.85 million new infections in 2015, compared to Cambodia's 59,000.
But when it comes to TB, the rate of infection is somewhat more important, as this shows a greater concentration and, given the airborne nature of the disease, greater opportunity for infection.
This, along with the signs and symptoms of the disease and how best to seek treatment, is what the women of Srosomthmy are learning about during an educational workshop run by local NGO, RHAC.
"Someone will be coughing for months ... and people will say he's an old man and it's part of being old," said Dr. Jamie Tonsing, South-East Asia Regional Director for the International Union Against Tuberculosis and Lung Disease, who believes greater awareness about TB is needed to ensure people get treatment and prevent infecting others.
Coughing is one of many symptoms of tuberculosis, and how the disease spreads -- through airborne droplets carrying the infectious bacteria -- and people often wait until symptoms become severe before seeking any form of diagnosis or treatment, according to Tonsing. Other symptoms include night sweats and weight loss.
Seeking treatment is "low on the priority list," said Tonsing.
Decades of civil unrest and economic hardship have left Cambodia, its people, and its health care infrastructure, in need of recovery.
"The whole health care system was non-existent after the civil war," said Tonsing, adding that the country had lost the majority of its doctors and nurses. According to the World Health Organization (WHO), fewer than 50 doctors remained in the early 1990s, after a prior total of around 600.
With low resources, not only the elderly were left coughing -- Cambodia has a relatively young population, with a median age of 25 years old.
WHO surveys in 2002 showed TB infection rates as high as 1,500 infections per 100,000 people, almost five times their current rates.
But since the end of the civil war more than 15 years ago, great efforts have been made to get the country back on track, with marked progress in terms of TB control.
Significant coordination between global donors and organizations, including WHO and the Japan International Cooperation Agency, and the Cambodian government led to the formation of the National Center for Tuberculosis and Leprosy Control under the Ministry of Health.
This, in turn, transformed health care provisions, including training of local health care workers and nurses and localizing -- or decentralizing -- care so people could get treated at their local clinic, instead of a hospital 10s or 100s of miles away.
The distance means many are unable to get care with their family by their side; someone needs to stay home and look after the kids, or earn an income.