290 



" All communications in regard to plant diseases should 

 be addressed to the undersigned. F. S. Eakle, 



" Biologist Experiment Station, Auburn, Ala." 



The sending out of the above circular led to an interest- 

 ing and extended correspondence from which the following 

 letters and portions of letters are published, as showing a 

 rather close agreement among widely scattered observers as to 

 the conditions favoring this disease, and also as indicating to 

 some extent its geographical distribution. 



From Director R. J. Redding, Experiment, Ga. : 



" I have had but little experience with so-called cotton 

 rust. I have for many years been an advocate for, and have 

 practiced, high manuring with complete fertilizers, and have 

 had very little rust. 1 favor the theory that rust— so-called — 

 is invited by a deficiency of plant food in the soil, and that 

 it rarely, if ever, appears on soils that have been liberally and 

 judiciously fertilized. We have never had a dozen plants so 

 affected on this Station Farm, and I attribute our exemption 

 to rotation, complete fertilizers, and plenty of them." 



Those who have had the pleasure of inspecting the splen- 

 did farm of the Georgia Experiment Station, and of noting 

 the almost psrfect state of tilth to which it has been brought, 

 will be in a position to appreciate the more fully the above 

 forcible statements by Director Redding. 



From Prof. J. S. Newman, Clemson College, S. C: 



u * * * Yes, I observed the experiments conducted 

 by Prof. Atkinson The effects of potash were very marked, 

 and were corroborative of results which I had previously ob- 

 tained. In one of the early bulletins* of the Alabama Sta- 

 tion you will find a report of the number of rusted stalks on 

 plots upon which no potash was used compared with the num- 

 ber where it was used. 



"There is no question about the fact that kainit exerts 

 an influence beneficial to plants by its power of conserving 

 moisture, and I think there is .little doubt also of its effect in 

 preventing rust on cotton independently of this power. Its 

 effect in periods of drought have been very marked in effect- 

 ing increased growth." 



From Director R. L. Bennett, Arkansas Experiment Sta- 

 tion, Fa yetteville, Ark.: 



*Bul. 22, pp. 19-21. 



