300 



ing rust on dry, thin soil, under the weather conditions of 

 1898. It also shows that applications of less than 100 pounds 

 per acre of kainit did but little good, and that 50 pounds of 

 muriate of potash was more effective than 200 pounds of 

 kainit. It must be admitted that the soil conditions slightly- 

 favored the muriate plot, but later in the season the differ- 

 ence of rust in its favor became much more pronounced than 

 at the time of this observation. This result is important as 

 indicating that the muriate will be at least equally as effective 

 as the kainit used in quantities proportionate to the actual 

 potash content of each, a point that has not been previously 

 determined. It also seems to indicate that it is the actual 

 manurial value of the potash that is effective in preventing 

 rust, rather than the supposed effect of these salts on the 

 water-holding capacity, or surface tension of the soil, since the 

 common salt and other impurities in the kainit would exert 

 almost as much of this influence, pound per pound, as the 

 potash. 



The other cotton plots on the Station Farm were all on 

 better soil and were but little injured by rust. On those that 

 received muriate of potash and cotton seed meal the foliage 

 was hardly so good as when a complete fertilizer was used. 

 Iq the variety tests the short-limbed, rather dwaifish kinds 

 seemed, as a rule, to suffer more than the rank-growing, 

 longer-limbed varieties. 



Observation on Ri:sidual Effect of Stable Manure on the 

 Farm of Mr. Flanagan, near Auburn. 



A field near the road was planted in watermelons in 1897. 

 A large amount of stable manure was applied under the melon 

 row. In 1898 this field was put in cotton, and the rows were 

 so spaced that every third one came on the old melon row. 

 All were fertilized and worked alike. On passing this field on 

 September 5, it was noted that the row over the old melon 

 row was rank and green, with no rust, while the two rows 

 between were much smaller and were almost entirely bare of 

 leaves. 



