INSECTS. 



133 



writer that great care should be used in apply- 

 ing this salt, as too much will certainly kill the 

 young plants. Li ntner also notes* that a gen- 

 tleman who soaked his corn in copperas watei* 

 before planting was not troubled by the worms. 

 A bushel of corn is placed in a tub and covered 

 with water, and a pound or pound and a half 

 of copperas water added, which has been dis- 

 solved in warm water. 

 This is stirred among 

 the seed, which are al- 

 lowed to soak 24 to 30 

 hours. 



Prof. J. B. Smith 

 recommends the use 

 of kainit (a potash 

 salt) to prevent cut- 

 worm ravages.-j- Ex- 

 periments of his gave 

 favorable results. The 

 should be 

 (After RUey.) broadcastcd over the 



field just before planting, as in spreading fer- 

 tilizer, for such it also is. .Riley, Fletcher and 

 others have recommended the poisoning of 

 green grass or clover and placing it in bunches 

 about the fields. The cut worm will be killed 



FIG 47.— GREASY OR BLACK CUT WORM, 1^ „ • - ■ J. 

 Agrotis ypsuon, lliitt. a, out worm ; K d 1 U 1 L 

 6, head of worm from front; c, moth. 



* Eighth report, etc., p. 239. 



t Bulletin 75, New Jersey agricultural experiment station, 

 Nov 7, 1890. 



