Vapour heat treatment and hot air treatments for nematode control was introduces by

Answer: Option C

Vapour heat treatment and hot air treatments for nematode control were introduced by K. Marcinowski.
Vapour heat treatment is a method of heating fruit with air saturated with water vapour (humidified by injection of steam) at temperatures of 40° - 50°C to kill insect eggs and larvae as a quarantine treatment before fresh market shipment. Vapour heat was developed specifically for nematode and other insect control.
Root-knot and foliar nematodes were the most sensitive and were completely eradicated after steaming at 111 degrees Fahrenheit for four hours.