Nearly half of the farms inspected recently in Suffolk failed to meet all legal standards of health and safety, a report says.
A further 30 posed an immediate risk of death, injury or ill health according to the Health and Safety Executive.
Inspectors visited 171 farms during a week-long blitz last month.
They issued 30 Prohibition Notices where the relevant activity had to stop immediately and 78 Improvement Notices where there was a breach of the law.
Need to tighten up
The visits were part of a range of initiatives being conducted by the HSE aimed at reducing deaths, serious injury and ill health on farms.
Principal inspector Richard Bulmer said: "Many farms were identified as having good proactive health and safety systems in place - but the blitz did identify many shortcomings.