18 



were diy; l3'ing between this and the check was one-half acre sepa- 

 rated from these two plats by strips 30 feet wide, and to this area the 

 poison was applied while the dew was on the plants. 



The 3"ield of the 1-acrc field, poisoned when the plants were dr^-, 

 was nearly 1,000 pounds of seed cotton. The field poisoned while wet 

 with dew gave about enong-h to pay for the cost of the poison, while 

 the check produced almost nothing. 



The other field, which was poisoned while wet with dew, was also on 

 bottom land with woods and a creek on one side and corn on one side, 

 the nearest cotton Ixiing about 100 yards away. The area of this field 

 was about 14 acres and the part poisoned was in the center of the field. 

 The result of this test is identical with the other test in which the cot- 

 ton was poisoned while wet; that is, the yield will about pay for the 

 cost of the poison. 



These results show failure in l)oth tests where the usual method was 

 followed of appl3nng the poison when the dew was on the plants, while 

 both those tests in which the poison was applied when the plants were 

 dry were apparently successful. These are the only instances of even 

 apparently successful use of Paris green known to the writer. When 

 considered in connection with the great number of unquestionable fail- 

 ures, it would seem that some other agencv than the poison maj^ have 

 been responsible for this apparent success. Mr. Purcell is not inclined 

 to accept the results as a conclusive demonstration of success in poi- 

 soning while the plants are dry and says that the experiments must be 

 repeated next season to prove an actual demonstration. 



Planters at Hearne. 



A number of large planters living around Hearne poisoned all of 

 their cotton two or three times this season for the leaf worm, but they 

 are unanimous in stating that it is ineffective against the boll weevil. 

 Among those who have used Paris green extensivelj' ma}- be men- 

 tioned Mr. C. G. Woods, who poisoned a 20-acre field five times, using 

 2-^ pounds per acre at each treatment, the first application being made 

 when the cotton began to square. The yield of this field was no better 

 than that of fields which were not poisoned. Mr. Woods also poisoned 

 about 300 acres twice during May and June at about the same rate as 

 above, but says that the yield is no better than that of other cotton 

 which was not poisoned. 



Col. R. J. White poisoned over 2,000 acres three times for leaf 

 worm, beginning about Jul^^ 20, and using 1^ pounds per acre at each 

 application. He says that the poisoned cotton has yielded no better 

 than cotton on similar lands which was not poisoned, and that Paris 

 green is of no use in fighting the weevil. The tendenc}' in this locality 

 is to drop poison entirelv. for in the presence of the boll wee^'il the 



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