378 



phifs. li of whicli rciiiaiiKMl miiiiamiKMl. On the others a nitrogen mix- 

 tiiK' (oiiiposed of 75 pounds of nitrate of soda and 100 pounds of drie«l 

 blood was used with 100 pounds of muriate of potash and 500, GOO, or 

 700 i)ounds of Thomas slag per acre; with 50 or 150 pounds of muriate 

 of potasli and 50(> pounds of Tlioiiias slag; or witli loo pounds of muri- 

 ate of potash and 500 jiouuds of dissolved bonebhick: or 5(M> jioundsof 

 tankage were used with 100 pounds of muriate of pota.sh. The yields of 

 corn and stover and the tinaneial residts are tabulated for each experi- 

 ment. On two farms Thomas slag seemed to give about as good 

 results as an amount of boneblack costing the same; on a third farm 

 boneblack proved the more economical. On one farm "the brst results 

 apix'ar to come from tlic use of large (pnintities of solul>le ])hosphates, 

 together with 100 or 150 i»ounds of muriate of potash and about 25 

 ]>ounds of nitrogen from some readily available source;" on anothei- 

 ''large quantities of j)hosi)hoiie arid and small quantities ot potash 

 ap]»eai- to have giv^Mi the best linancial lesulls;" on a thii<l ••the largest 

 yii'M eame from the use of 50(( jiounds of slag with 150 jxmnds of pot- 

 ash;" and on the fouith the results were rather in«'onclusiv«', but indi 

 <-at(Ml ]»li«ispliorie acid to l>e tlie substan<'e most needed by the soil tor 

 this (;rop. 

 Effect of diffkkent fertilizers upon the compositiox of 



OATS AND .'^THAW, (\ D. \Vo«>DS, B. S., AND IT. B. GlUSON, B. A. 



(pp. IKJ-lOd). — Analyses were imuh' of the oats and straw grown in one 

 of the special nitrogen experinu'nts reporte«l above with a view to obtain 

 ing additional data on the etfeets of fj'rtilizers, especially nitrogemms 

 fertilizers, on thr* i)ercentage of totnl ingredients in the grain and straw. 

 The soil was a light sandy loam with sandy subsoil. The i>crcentage 

 composition of the. grain and straw harvested from each of the 14 plats 

 is givt'u, together with the food ingi'edients in the same per acre, and 

 the average results obtained ar«' c(»mpared with the results of other 

 American analyses of oats. The following table shows the average 

 com]K>sition of the dry matt«'r in grain and straw from plats receiving 

 ditferent kinds of fertilizers: 



Average composition of oaiv grown with different fcrtilizere. 



Gmin. 



Average of plats receiving — 



"U-J 



Straw. 



e-2 



No fertilizer 



Mixeil minerals i 3. 01 12.52 



Nilratoof soda ami iiiixeil miiieral.s... 2.72 10.45 

 Siilpliale of aiiimoiiia ami mixed min- ! I 



eral.s ! 2. 83 12. 56 



Dried blood and mixed miuerala i 2.73 11.92 



Pr. rt. Pr. ct. Fr. ct. Pr. ct.'Pr et. 

 3.29 14.96 .'-..53 13.66 |62. 56 

 5. 78 14. 31 164. 38 



6.13 



6.02 

 5.94 



14.69 

 14.42 



64.45 



63 91 

 64.99 



Pr.et. 



4.63 

 4.81 



4.26 

 4.45 



Pr.et. 



34.82 

 .37. 23 

 .'(8. 40 



36. 8» 

 38.17 



Pr. ct 



3.48 

 3.41 

 3.57 



3.39 

 3.18 



* ,5 



Pr.rt. 



8. fM 



6.04 

 5.44 



6.67 

 5.42 



Pr. rt. 

 4«. 62 

 4**. 69 

 47.78 



48.79 

 48.78 



It would seem tVoiii tlicsc averages that where nitrogenous fertilizers 

 were applied the grain contained a larger percentage of fat and i)rotein 



