The industrial production once again slipped into negative territory and contracted 1.9 per cent in February due to poor performance in manufacturing, especially capital goods.Factory output as measured by the index of industrial production showed a decline of 0.1 per cent during the 11-month period from April to February, compared with growth of 0.9 per cent in the corresponding period a year earlier.According to data released by the Central Statistics Office, Industrial output for January was revised upward to growth of 0.8 per cent from a provisional estimate of 0.1 per cent.