FIELD CROPS. 



243 



additional facts brought out by the fermentation of the crop of 1896. 

 The effect of fermentation on the weight and fire-holding- capacity of 

 tobacco is shown in the following table, which gives the averages of all 

 the plats under experiment : 



Average weight and fire-holding capacity of wrapper leaves. 



Short wrappers. 

 Long wrappers . 



Average number of 

 wrapper leaves per 

 pound. 



Before 

 fermen- 

 tation. 



Average flre-hol cl- 

 ing capacity i n 

 seconds. 



Before 

 fermen- 

 tation . 



12.0 

 9.2 



After 

 fermen- 

 tation. 



28.5 

 23.9 



The long and short wrappers in the sorted crops averaged 60.7 per 

 cent, some plats yielding as high as 78 per cent of wrappers. The 

 average yield per acre of pole-cured, sorted tobacco for all the plats 

 was 1,685 lbs., the maximum being 2,280 lbs. and the minimum 1,145 

 lbs. per acre. The average loss of weight in sorting ranged from 4.5 to 

 5.3 per cent. The following table shows the comparative value of the 

 leaf from the several plats. The number expressing the relative qual- 

 ity is the average of the numbers representing the grading of the 

 tobacco for each year, the smaller numbers representing the higher 

 values : 



Comparative value of the leaf from all the plats for five years. 



Plat. 



Fertilizers applied. 



Relative 

 quality. 



P 

 Y 



Z 

 B 

 W 

 AA 

 fl 

 F 

 C 

 O 

 D 

 J 

 K 

 S 



u 

 a 



A 



v 

 i 



BB 

 L 

 R 

 N 

 X 



Q 



E 

 M 

 T 



Cotton-seed meal, double carbonate of potash and magnesia, and bone 



Cotton-seed meal and wood ashes 



Ground fish, double sulphate of potash and magnesia, and bone 



Linseed meal and cotton-hull ashes 



Mapes tobacco manure 



Stable manure 



Castor pomace and cotton-hull ashes 



Linseed meal, cotton-hull ashes, and bone 



Cotton-seed meal and cotton- hull ashes 



Cotton-seed meal, carbonate of potash, and bone 



Cotton-seed meal and cotton-hull ashes 



Castor pomace and cotton-hull ashes 



Cotton-seed meal, double sulphate of potash and magnesia, and bone. . 



Stockbridge tobacco manure 



Mapes tobacco manure 



Castor pomace and cotton-hull ashes 



Cottou-seed meal and cotton-bull ashes 



Mapes tobacco manure and Mapes starter 



Castor pomace, cotton-hull ashes, and nitrate of soda 



Tobacco stems 



Cotton-seed meal, double sulphate of potash and magnesia, and bone .. 



Stockbridge tobacco manure 



Cotton-seed meal, sulphate of potash, and bone 



Sanderson tobacco manure 



Baker tobacco manure 



Castor pomace and cotton-hull ashes 



Cotton-seed meal, sulphate of potash, and bone 



Ground fish, nitrate of soda, and lime 



6.0 



7.2 



7.5 



7.8 



8.4 



8.5 



9.6 



10.3 



10.4 



11.0 



11.4 



12.6 



13.4 



13.6 



14.0 



15.0 



15.6 



15.6 



16.0 



16.0 



16.6 



17.8 



19.8 



21.4 



23.0 



24.0 



24.4 



25.5 



The discussion of the results is practically the same as that given in 

 the previous report (E. S. R., 9, p. 543). 

 6216— No. 3 4 



