101 



weather became dryer and hotter these plants began to 

 blight, the leaves and forms began to ished, and by the last 

 of August both plots were dead. Plot 4 (kainit) remained 

 green the longest." 



From Coatopa the experimenter writes: "August 10 I 

 thought the plants on all plots were dead — rusted. They 

 afterwards put out some leaves on the following plots: 4, 

 r>, 7, 9 and 10." These were the plots which received kainit. 



Kainit in this experiment afforded a larger increase in 

 yield than acid phosphate or cottonseed meal, which result 

 is probably attributable rather to this renewed growth on 

 the kainit plots than to a special deficiency of potash in the 

 soil. 



The report from Thomaston contains the following notes: 

 "Rust w-as bad on all plots relatively in order named: 5, 8, 3, 

 2, 7, 4, 10 and 9. Kainit does not prevent, but only allevi- 

 ates, rust." 



At Union Springs, on a field especially subject to rust, 

 "the extreme heat of the last of June caused all plots to 

 shed, where no kainit was used, especially plots 1, 2 and 

 5. July 8 I noticed tbat rust appeared on the unfertilized 

 plots. July 15 rust appeared on plots 1, 2 and 5," those re- 

 ceiving no kainit. No mention is made of rust in con-nectiou 

 with plots fertilized with kainit. 



From LeGrand, Mr. Robertson writes: "There was com- 

 paratively no shedding of leaves or rust except on plots 

 where there was no kainit Uised. Plot 4 did not shed a leaf, 

 and remained green until frost. Plots 9 and 10 did almost 

 as well/" 



At Naftel "Nos. 1, 2, 3 and 8 suffered more with rust than 

 the others; Xos. 3 and 8 (unfertilized) more than any other." 

 The report contains the following estimate of the percent- 



