An experiment was conducted to evaluate the field performance of power weeder for interculturing operation in maize crop (Zea mays L.) to compare the cost of operation of power weeder in maize vis-a-vis grubber, wheel hoe and 'Khurpi' as control treatment. Power weeder having the higher field capacity (0.067 ha/hr) was found most efficient tool for weeding, particularly in view of time taken in operation followed by the wheel hoe (0.009 ha/hr), grubber (0.008 ha/hr) and 'Khurpi' (0.002 ha/hr). The highest field efficiency was attained in case of 'Khurpi' (94.73%) followed by wheel hoe (90.54%), grubber (84.40%) and power weeder (76.39%). The highest weeding efficiency (99.44%) was recorded in treatment 'Khurpi' followed by grubber (96.8%), wheel hoe (94.64%) and power weeder (89.8%). The plant injury was highest under power weeder (1.94%) followed by wheel hoe (1.01%), grubber (0.76%) and 'Khurpi' (0.46%). The cost of operation of 'Khurpi' was maximum (Rs. 4051/ha) followed by power weeder (Rs. 1350/ha), grubber (Rs. 1158/ha) and wheel hoe (Rs. 1152/ha). In spite of the marginal higher cost of operation of power weeder over other tools, power weeder ensures timeliness weeding in operation than other weeding tools.