Field capacity of a tractor drawn power harrow is?

Correct option is D

The field capacity of a tractor-drawn power harrow refers to the amount of land that can be effectively covered by the implement in a day. In this case, the correct answer is (d) 1.5 ha per day. This means that the power harrow, when pulled by a tractor, is capable of efficiently cultivating and preparing an area of 1.5 hectares within a day. Field capacity is influenced by various factors such as the working width of the power harrow.