Petrona Villasboa holds a picture of her 11-year-old son Silvino, who died in 2003 after being sprayed with pesticide while cycling home on a public path beside a soy field. The two soy farmers convicted have never served their sentences.

Landless peasants have set up a temporary home by the side of the road in Alto Parana department. Some 70,000 people leave the countryside every year. Expanding soy farming is one of the key factors behind this displacement.

An indigenous community camp in one of the capital Asuncion's main squares, waiting to hear if the Government will compensate them for the land they say they've been forced off. Paraguay has around 1.5million small farmers but 70% of the land belongs to just 2% of landowners.

Victoria Gonzalez believes the chronic health problems suffered by six of her children are due to exposure to pesticides from the soy fields next door. The farmer has ignored laws requiring him to leave protective trees between his field and her home.

These Guaraní tribe members were hospitalised in November 2009 after a plane showered their village with what they believe was pesticide. The owners of the surrounding land deny targeting them but an inquiry found aerial spraying crops near homes was illegal. The land dispute continues.

Children in the same isolated indigenous Guaraní community, a long drive on a dirt track from Itakyry in Alto Parana department.

An indigenous child plays in the same village. The community is fighting to regain their traditional land. Leader Agustin says: 'I'm worried for the future - to have a future for the children you have to have land'.

Villagers in the eastern department of Canindeyu taking their peanut crop to market. The community farms in the traditional way, without chemicals and by hand.

Isabela Portillo's husband Ruben died in January 2011 of acute poisoning doctors suspect was caused by prolonged exposure to pesticides. Isabela says she will have to abandon her smallholding in the hamlet of Colonia Yerutí, Canindeyu department because she fears for her son Diego's health.

Isabela's mother Maria Valvina by the home the family will soon be forced to leave. The fields surrounding their smallholding belong to a soy farmer. Wind and rain carry pesticide residues to a communal water supply that has been found to contain unsafe levels of chemicals.

Paediatrician Stela Benítez Leite has conducted academic research linking pesticides with cell abnormalities in embryos. After publication she experienced intimidation from authorities but continues to call for more research into the health risks of human exposure to pesticides.