5o4 NEW JERSEY AGRICULTURAL COLLEGE 



\vero sot A])ril ;30th, and oacli half row or oxperimental unit con- 

 tained eiglitj-live plants. 



A^o. 1. Ground tobacco was tlKsroiiglilv dnstod around the plants 

 May 11th, ISth and 21st. On this series twenty-two plants were 

 destroyed by the inag-gots. The application intended for April 

 26th was not made, and it is ])r(ibable that this omission materially 

 affected the residt. 



No. 2. Powdered white lieltehorc was nsed, like the tobacco^ 

 May lltli and 15th, and on May 18th and 21st it was used as 

 a decoction — two ounces to one gallon of water, a teacupful to a 

 plant. Seventeen plants were destroyed by the maggots. As in 

 the previous case, something was lost by delay. 



No. 3. Carholic acid emutsiow was used at the rate of one-half 

 pint to twenty-five gallons, ]\Iay loth and ISth, and at the rate of 

 onehalf pint to twenty gallons May 22d, The applications were 

 too late and too weak and thirty-eight ])lants in the series were 

 destroyed by the maggots. 



No. 4. Scatecide was used at the rate of one to twenty-five of 

 water, May 15th, 18th and 22d. Scuie injury was caused to the 

 plants, and apparently there was little or no effect as against the 

 insects. Sixty-seven plants in this series were destroyed by the 

 maggots or by the added injury due to the insecticide. 



No. 5. Exposure was tried on this series, i. c, the earth was 

 removed as described in the outlined plan, but infestation was 

 so obvious that the carbolic acid emulsion, one-half pint to twenty- 

 five gallons, was applied May 18th and 22d. On this series thirty- 

 seven plants were destroyed by maggots. 



No, 6. Chech Bow was so generally infested May 22d that helle- 

 bore decoction, six ounces to one gallon of M^ater, .was used. 

 Thirty-three plants on this series were destroyed. 



No. 7. Kerosene and Sand were applied May 15th and 22d, as 

 described in the (Uitlined ]>lan. On iliis series twenty-nine plants 

 were destroyed. 



No. 8. Kerosene eniidsion was used at the rate of 1 to 12 of 

 water May 15th and 18th, and at the rate of 1 to 10 May 22d. 

 On this sixty-eight plants were reset. Oil injury was undoubtedly 

 responsible for the death of some of these plants. 



No. 9. Cliecl' Row. no a])])lieation ; forty-seven plants were 

 destroved 



