Journal of Agricultural Research 



Vol. VI, No. I 



Table VI. — Effect of carbon bisulphid on the growth of corn and buckwheat 



No. 



.Soil. 



Carbon 



bisulphid 



added. 



Per cent. 



Control . 

 Control. 

 Control . 

 Control. 



Weight of first crop, com. 



Green. 



Gnt. 



480 

 440 

 500 

 410 

 380 

 460 

 410 

 460 



Dry. 



Gm. 



82 

 90 

 82 

 77 

 85 

 83 

 86 



Average. 



Gm. 



\-l 



83 



Weight of second crop, buck- 

 wheat. 



Green. 



Dry. 



Gm. 

 26 

 27 

 22 



19 

 27 



17 



20 

 18 



Average. 



Gm. 

 23-5 



20.5 



Table VII gives the effect of this volatile antiseptic on oats (first crop) 

 and corn (second crop). The former showed an increase in growth in 

 the treated soil; the latter was not affected. 



Table VII. — Effect of carbon bisulphid on the growth of oats and corn 



Soil. 



Carbon 



bisulphid 



added. 



Per cent. 

 Control. 

 Control. 

 Control. 

 Control. 



Weight of first crop, oats. 



Green. 



Gm. 

 172 

 184 

 171 

 182 

 200 

 205 

 197 

 192 



Dry. Average. 



Gm. 

 46.5 

 51 

 46.7 



49 

 59 

 59 



57-7 

 57-5 



Gm. 



48.3 



57-8 



Weight of second crop, com. 



Dry. 



Average. 



Gm. 



36 



37 



A general consideration of the data shows that corn in this soil type is 

 apparently indifferent toward carbon bisulphid. Buckwheat, oats, and 

 mustard were all benefited by the antiseptic. 



BUCKWHEAT, MUSTARD, OATS, AND CORN IN DIFFERENT SOILS 



The experiment with buckwheat, mustard, corn, and oats was a com- 

 bination study of the effect of carbon bisulphid on bacterial activity 

 and plant growth in three different soils. The first series contained 

 Miami silt loam, the second series Miami soil diluted one-half by volume 

 with sand, and the third series sand alone. According to chemical anal- 

 ysis, Miami silt loam is fairly rich in organic matter, nitrogen, potas- 

 sium, and phosphorus. Of the three fertilizing elements, phosphorus 

 perhaps is present in the smallest amount. The quantity of soil and its 

 treatment was similar to that of the preceding experiment except that 

 the treated jars were kept tightly covered with parchment paper. One 

 month after the carbon bisulphid was added, these were removed. By 



