Rodney and Otamatea Times, Waitemata and Kaipara Gazette , 18 November 1914, Page 1
To secure his potato crop from blight a farmer dipped his potato seed in a solution consisting of lib of lime, 1 quart of kerosene to 40 gallons of water, for 6 cwt. of seed. The result was very-satisfactory. The weed was allowed to dry after being taken from the solution, before planting.