308 



Experiment by C. C. L. Dill, Dillburg, Ala. 



First picking reported October 3 : 



Plot 1. — 1 load stable manure, 4^ lbs. seed cotton. 



Plot 2. — 1 load stable manure and kainit, 54 lbs. seed 

 cotton. 



Plot 3. — Nothing, 20 lbs. seed cotton. 



He says that when there was no kainit there wfis some 

 rast, and the cotton was not so well fruited and did not stay 

 green so long as when the kainit was used, though both the 

 manured plots made fine cotton. 



Experiment by Director G. W. Carver, of the Experiment 



Station of the Tuskegee Normal and Industrial 



Institute, Tuskegee, Ala. 



The details were carried out exactly as suggested in the 

 circular (p. 289). Report under date of October 6, as follows : 



" Plot 1 — Stable manure. Scarcely any rust, only a few 

 plants showed signs of Macrosporiura and Cercospora. It 

 held its leaves well and fruited heavily. Stalks large and fine. 



Plot 2 — Stable manure and kainit. Only an occasional 

 leaf affected with rust. Plants unusually fine and well 

 fruited. One plant had a little Bamidaria. - 



Plot 3 — Kainit. Rusted badly in spots. Plants all pale 

 and rather small. It had both Macrosporium^ Cercospora and 

 Ramularia. Plants not counted, but estimate fully one-third 

 of plot afl'ected. 



Plot 4 — Nearly every plant rusted and dropped its leaves. 

 Plants very small, bolls inferior ; did not see an average of 

 four bolls to the stalk." 



In this carefully conducted experiment the soil was evi- 

 dently too poor to respond to the potash alone. It needed 

 the complete fertilizer furnished by the stable manure as well 

 as its beneficial mechanical effects. 



Taking the view of the matter that seems to be forced on 

 us by the evidence that has been given in such detail in the 

 foregoing pages, and which has come from so many different 

 sources, cotton rust simply becomes another argument, and 

 a very potent one, too, in favor of diversifying our crops, of 

 keeping more live stock, and of adopting some systematic ro- 



