When calling to farmers in the course of the 1989 disadvantaged areas survey my Department's agricultural officers entered onto a form for each farm details of the total acreage farmed and of the separate acreages devoted to pasture, rough grazing, forage crops such as hay, silage, etc., tillage crops for feeding and farm livestock and cash tillage crops such as barley, wheat, cereals, sugar beet, etc. They also entered onto this form details of the horses, cattle, sheep, goats, pigs and poultry maintained on the farm, of any other farm enterprises thereon and of the number of persons engaged in working on that farm and had the farmer certify that the information on the form was correct. From this comprehensive, agreed profile of the total farm enterprise, the family farm income per farm worker was then calculated by reference to standard net margins used by Teagasc, etc.