A Limpopo medical doctor has documented a string of physical abnormalities -- including breasts on a five-year-old girl -- that he believes are directly linked to the unregulated use of agricultural chemicals.

Dr Johan Minnaar (44) has produced evidence of serious illnesses and disorders among his patients in Groblersdal, where commercial farmers are spraying large amounts of pesticides on crops.

Horrific cases include teenage boys temporarily "growing breasts" during spraying seasons, miscarriages, partial facial paralysis, cancers and ear malfunctions. Many of his patients suffer from milder poisoning symptoms, such as asthma, sinusitis, headaches, dizziness and depression.

Minnaar, who has been practising as a doctor in Groblersdal since 1997, took the unusual step of coming forward with his evidence after unsuccessful attempts to get government and regulatory authorities to intervene. He said: "Groblersdal is surrounded by farms growing mostly citrus and grapes, but also cotton, vegetables and maize. Throughout the year there is constant crop spraying with pesticides containing organophosphates and carbamates. No one has informed the community what pesticides are being used, even though the law states people must be notified before spraying."

Minnaar started investigating after realising that symptoms he had experienced over six years followed a pattern. "I experienced chronic fatigue, nausea, muscle aches and pains, skin rashes and arthritis, particularly from August till November, when there is a noticeable increase in the spraying. On investigation, it became clear that other people had these symptoms at the same time."

In August 2006, he became so ill that he had to stay at home for two weeks. His wife and three children also showed symptoms. He began regularly testing his and his spouse's blood and the tests showed they were exposed to organophosphates and carbamate pesticides.

Minnaar laid complaints with the registrar of the national agriculture department, the water affairs department and the labour and health departments of the Limpopo government. He also tackled the farmers, chemical companies and crop sprayers.

The spraying continued and, on two days in February this year, large amounts of carbamate were released during the aerial spraying of citrus orchards. Residents were not warned beforehand. Among those who later showed signs of poisoning were pupils of two schools located in the orchards. Minnaar said pupils regularly played on the sports fields during spraying. The teenage boys who had consulted him about "growing breasts" in the spraying seasons attended the schools.

In late January, a woman brought a five-year-old girl who had developed breasts to his consulting rooms. Minnaar suspected it could be linked to poisoning and referred her case to Limpopo government officials, who he met two days later. "As with many patients, she had no access to medical facilities or funds. The authorities undertook to get her medical testing and treatment, but we've heard nothing", he said.

According to Professor Leslie London of the University of Cape Town's health sciences faculty, premature puberty and other hormonal abnormalities are symptoms of contamination by pesticides containing "endocrine disruptors".

A 2005 study of girls in Mexican farming areas, titled Altered Breast Development in Girls, indicated that pesticides could affect breast development and lead to early puberty. Said London: "It has been shown that endocrine disruptors can also affect sexual maturation and differentiation. A study in Sri Lanka of a pesticide called endosulfan found that boys living in villages below cashew nut plantations sprayed with endosulfan had impaired sexual maturity and other reproductive impairments."

London researched aerial crop spraying around Groblersdal in 2005, with a focus on risks to small farmers rather than health impacts. Last year, he published research on possible links between aerial organophosphate spraying in the Northern Cape and Guillain-Barré Syndrome, a neurological disorder.

"The problem of rural towns affected by agricultural application of pesticides is ubiquitous," he said. "Present regulatory and safety management methods really don't address this problem sufficiently. "I think there is a view that if you choose to live in the country, you should accept this as a way of life. That is a societal value decision, not a matter of science."

The health department's directorate of environmental health has announced plans to launch a chemical safety programme in Groblersdal at the end of March. According to its draft concept document, "the aim is to launch the programme to inform provinces that national [government] is willing to assist them in the management of chemicals".

The draft programme identifies schoolchildren, women, farmers and farmworkers, shac dwellers, informal traders and manufacturers as the "most vulnerable communities in municipalities that lack capacity to properly and satisfactorily deal with chemical safety issues".

South Africa is a signatory to international conventions aimed at promoting chemical safety, and the labour ministry said in October that chemical safety was "high on the minister's agenda". But crop spraying is a highly technical industry, and pinpointing contamination is difficult.

London said it was almost impossible for applicators in planes to control the drift of chemical sprays. "Aerial application has been shown in some studies to drift more than 2km, even in the absence of strong winds." European countries strictly regulate the industry through buffer zones around residential areas and warning systems, he added.

Gerrit van Vuuren, an aerial application consultant at Croplife South Africa, blamed mist- spraying of crops on the ground. "It is absolutely wrong to conclude that because there is a yellow aircraft spraying agrichemicals in an area, it must the reason for ill health effects," he said.

Van Vuuren said mist-blowers apply more than 1 000 litres of spray mixture a hectare, compared to 30 to 40 litres in the case of aerial spraying. They also blow a significant volume of the spray higher than 6m into the air. "A couple of mist-blowers spraying thousands of litres of spray mixtures at night are less visible than an aircraft spraying a couple of hundred litres in the morning."

He said it was up to farmers to notify inhabitants and issue warnings. They were also supposed to ensure no one entered their fields during spraying.

The environmental health unit at the Elias Motsoaledi municipality, under which Groblersdal falls, said it was "busy investigating the usage of pesticides being sprayed from aeroplanes, as nuisances do occur from these activities". But Minnaar is frustrated by government promises to investigate. "For all practical purposes, the supposed controls are not working. While they keep promising to sort it out, we are getting poisoned," he said.
(Geasphere mailing list, 28/03/2007)