30 



field A and a gain of 1.88 tons per acre on field B, field B in this cas 

 showing a greater gain than field A. These data show a slight tei 

 dency to increase of yield as a result of three applications. 



As a general conclusion it may be said that the results of dividin 

 the fertilizer and making two or three applications, as compare 

 with the results of applying it all at one time, do not show a suffl 

 cient advantage to justify the extra expense involved. 



The next comparison relates to increasing the quantity of the noM 

 mal-formula fertilizer to 2,000 pounds per acre. The fertilizer wai 

 not sown broadcast in 1904, but for the other three years the averagl 

 yield on field A from 2,000 pounds of fertilizer is 19.90 tons per acil 

 and on field B 23.12 tons per acre, with practically no difference il 

 the character of the cane produced. It is possible to make a diroJ 

 comparison with fields A and B for 1902 and 1905. The averagl 

 yield from 2,000 pounds broadcasted in field A for the two years m 

 22.37 tons and in field B 29.38 tons. This is an increase over thi 

 tonnage produced with 1,200 pounds per acre applied broadcast, or 

 3.78 tons on field A and 7.75 tons per acre on field B. With 2,0(jl 

 pounds put on in a single application, the average yield on field Jj 

 is 19.71 tons and on field B 22.10 tons per acre. These results coral 

 pared with the results from using '1,200 pounds in one application 

 show a loss in yield of 1.36 tons in field A and a gain of 2.37 tons ij. 

 field B. For the years 1902 and 1905 the yield in the case of 2,00 

 pounds in one application in field A is 19.35 tons and in field B 23.2 

 tons per acre. Compared with the use of 1,200 pounds in one appli 

 cation, this shows a gain of 0.81 ton per acre in field A and a gain o 

 1.91 tons per acre in field B. In this case the data are somewhi 

 conflicting, but- upon the whole show a very slight increase due tj 

 the use of the increased quantity of fertilizer. This increased yield! 

 however, is hardly sufficient to justify the additional expense of thj 

 additional 800 pounds of fertilizer. 



In the case of two applications of 2,000 pounds, half at the tim ; 

 of planting and half at a subsequent period of growth, the yield fo 

 field A is 23.41 tons and for field B 24.82 tons per acre. Compared 

 with the use of 1,200 pounds in two applications, this shows an 

 increase in field A of 3.88 tons per acre and on field B of 5.67 tonj 

 per acre. For 1902 and 1905, for fields A and B, the yields by thj 

 use of 2,000 pounds in two applications are 25.43 and 31.63 tons 

 respectively. This shows, when compared with the application oj 

 1,200 pounds in two applications, an increase of 5.86 tons in field j| 

 and 9.28 tons per acre in field B. Compared with the yield securec 

 by the use of 2,000 pounds of normal fertilizer in one application 

 for the four years, there is an increase of 3.70 tons in field A and 2.73 

 tons in field B in favor of the two applications. For 1902 and 190J 



