16 



Tarlk II. — Comparatirc iiijuri/ by holhronn to enrhj-planted ((ml hUe-phmted cotton. 



Early-planted. 



Late-planted. 



Locality. 



I Date of 

 'planting. 



Ladonia, Tex ; Apr. 1 



Ben Franklin, Tex. j Mar. 19 



Qniiilan.Tex ! Apr. 1 



Wills Hoint, Tex... j Mar. 30 

 I'aris, Te.x j do . . . 



Almont, Tex ' Mar. 23 



Average of all ob- ' 



servations. I 



Seed 

 used. 



King . 



Hall . . 

 King . 

 ..do.. 

 Gin... 



King . 



Per 



cent Date of 

 of in- 1 planting 

 jury. 



23.6 



5.6 

 5.5 

 4.9 



19.7 



May 2 



Apr. 15 



Apr. 25 



May 2 



May 1 



5. 6 June 2 

 "Is"! 



Seed used. 



King 



Hall 



Gin 



Rowden . 

 Gin 



Flcmins 



Per 



cent 

 of in- 

 jury- 



35.3 



23.5 

 10.0 

 10.0 

 29.6 



23.6 



Per 



cent in 



favor 



of 



early 



l>lant- 



ing. 



11.7 



17.9 

 4.5 

 4.1 

 9.9 



18.0 



Kind of soil. 



Black-waxy, wood- 

 ed. 

 Do. 

 Post-oak. 

 Gray, prairie. 

 Black, prairie. 



Red River bottom. 



It will be noted that in determining- the percentages of injury 

 observations w-ere made on early and late cotton in the same locality 

 and on the same date as shown in Table I, so that the comparisons are 

 quite fair. The average total injury to early cotton was 9.3 per cent 

 as compared w^ith an average total injur}- of 20.7 per cent to late 

 cotton. This difference is undoubtedly less than would be the case 

 during seasons of more severe injury than occurred in 1901. The 

 decided preference of the bollworm for squares and young bolls is 

 shown in the figures of average percentages of injury given in both 

 tables. Thus the sum of the percentages of injurv, as shown in the 

 tables, to squares and bolls one-half grown or less is 149.7, while on 

 bolls from three-fourths to full-grown the percentages of injury only 

 aggregate 11.5. 



Many detailed observations have been made during the course of 

 the present investigation bearing out the above statements, and data 

 as to the comparative freedom of early cotton from bollworm injury 

 have been gathered. This fact has been the basis of one of the prin- 

 cipal lines of experimental w^ork. 



For the completeness of experiments, the presence in injurious 

 numbers of the bollworm has been necessary. Unfortunatelj", from 

 an experimental point of view, the injuries of this species during 1904 

 on the several experiment farms were not sufficientl}^ marked to have 

 made the tests as thorough as could be desired. However, the consid- 

 erable amount of data collected throughout the season on the effects 

 of the several methods of treatment, and the final results, as shovrn by 

 the weights of cotton produced, are none the less valuable as indicat- 

 ing the relation of such work to the production of an early crop. 



WILLS POINT FARM. 



The experimental farm at Wills Point, Tex., on the plantation of Mr. 

 O. L. Johnson, was located on a typical gray prairie soil of that sec- 



