Show for exit extermination of worm enemies of bulbs certain eelworms eel worms or nematodes are very injurious to narcissus and other oilier bulbs how to kill these worms without injuring the bulbs has boon been a n question scientists of the united states department of agriculture found that it coald be done with general success by treatment with hot water or vapor heat heal still some of the posts survived these survivors proved to be a minority of the population which were quiescent or taking a rip nip van winkle nap in the bulb the worms which were active at the time of treatment were more easily killed experimenting further these scientists observed that temperatures of 70 to 80 degrees fahrenheit applied by either hot water or vapor heat induced activity among these quiescent or dormant nematodes which were resting in the bulbs it seems then that growers who wish to treat bulbs with hot water or vapor heat to kill worms of tills this typo type should first keep heep the bulbs at a temperature of 70 to 80 degrees fahrenheit in water or vapor for two hours houra to awaken the dormant worms and stimulate them to activity |