546 



EXPERIMENT STATION RECORD. 



dry ground fish, the other in the form of cotton-seed meal. The results 

 are tabulated below : 



Comparison offish with cottonseed meal as a tobacco fertilizer. 



An experiment with stable manure and tobacco stems was begun on 

 2 plats in 1893 and continued during 4 seasons. These plats were 

 uncultivated in 1892. One plat was dressed annually for 4 years at the 

 rate of 10 to 12 cords of barnyard manure per acre. The barnyard 

 manure is calculated to have supplied about 111 lbs. of nitrogen, 71 

 lbs. of phosphoric acid, and 149 lbs. of potash; the superphosphate 

 about 15 lbs. of nitrogen, 72 lbs. of phosphoric acid, and 2.3 lbs. of pot- 

 ash. The other plat received annually 6,000 lbs. of tobacco stems, 

 containing 111 lbs. of nitrogen, 30 lbs. of phosphoric acid, and 486 lbs. 

 of potash. In 1S93 and 1894 each plat received 500 lbs. of Swift Sure 

 superphosphate in addition to the above applications. The following 

 table gives the results : 



Barnyard manure compared wifh cotton-seed meal and tobacco stems. 



"The much smaller crops raised on stable manure are explained in part by tbe fact 

 that the nitrogen of stable manure is far less readily available thau that of either 

 stems or cotton-seed meal. . . . When no other fertilizers are used in connection 

 with it the crop is rather light, at least for the first few years, till the land is well 

 filled with the manure. The leaf is said to 'lack finish' when pole-cured, but 

 after fermentation it is said to have a 'finish superior' to that raised on chemitals 

 alone. . . . 



"The successive crops from the plat AA, dressed with manure, ranked 13th, 17th, 

 and 1st. 



"Those from the plat BB (tobacco stems) ranked 16th, 21st, 19th. while the 3 cor- 

 responding crops on cotton-seed meal ranked 23d, 5th, and 14th." 



