New Yoke Agricultural Experiment Station. 393 



Plat 3. Six rows, sprayed with Bordeaux mixture and Paris green. 



Six rows, check. 

 Plat 4. Two rows, sprayed with resin mixture and Paris green, no 

 lime. 

 Two rows, check. 

 Plat 5. Two rows, sprayed with Bordeaux mixture 1 , resin mixture 

 and Paris green combined. 

 Two rows, check. 



The cabbages were examined on September 4. Plats 1 and 5 

 were found to have nearly perfect foliage, with no living cabbage 

 worms and but few loopers; the inner leaves of the cabbages on 

 Plats 2 and 3 were badly riddled by worms of both species. Plat 

 4 was practically free of the cabbage worms, but showed many 

 loopers. 8 The plats were resprayed on the day of examination, 

 no change being made in applications. Upon subsequent exam- 

 ination, September 21, the results of the different treatments were 

 about the same as at the first examination. The work of the 

 worms on Plats 2 and 3 was more marked, the cabbages on these, 

 as well as on the check plats, being worthless. Many worms were 

 also found on Plat 4, but none on Plats 1 and 5. 



Salt. — On August 31st the owner of the field treated an acre of 

 cabbage adjoining the sprayed plats with salt. When inspected 

 on September 4 not a dead cabbage worm could be found on the 

 whole acre; instead, plenty of living specimens were found with 

 salt adhering to them and apparently not injured in the least. 9 



8 The condition of Plat 4 indicates that the resin mixture used alone does 

 not carry enough Paris green to kill the cabbage looper.. So many of the 

 cabbage worms were pupating at the time that accurate conclusions as to 

 results could be drawn. 



9 This brood of the cabbage worm commenced to pupate or enter the 

 chrysalid stage a few days after treatment with the salt. As the worms com- 

 menced to disappear soon after the salt treatment the owner of the crop 

 decided that salt had laid them out, while in reality the worms were simply 

 crawling away to hiding places to transform into the chrysalid stage. Too 

 many such tests of salt, flour, road-dust, fertilizers, and similar nostrums 

 seem to yield good results when used against caterpillars or worms, if used 



