Which of the following is not a control measure of cowpea weevil?

The control measure that is not effective against cowpea weevils is "innoculation of seeds". Cowpea weevils are pests that infest cowpea seeds, and can cause significant damage to the crop. To control cowpea weevils, several measures can be taken, including fumigation of stored seeds, storage of seeds in air-tight containers, timely harvesting, and dusting seeds with 0.5% lindane dust. However, "innoculation of seeds" is not a control measure for cowpea weevils. Inoculation refers to the process of introducing a microorganism or other biological agent to stimulate growth or provide protection against disease or pests. Inoculation may be effective for other pests or diseases, but not for cowpea weevils. Therefore, it is not a recommended control measure for this particular pest.