36 a 



EXPERIMENT STATION. 



[Jan. 



and the outer husks of the ears, but did not entirely check their 

 development. There was, however, a large proportion of soft 

 corn. The proportion of soft corn on the basic slag meal was 

 least, and in general less on the soluble than on the more in- 

 soluble phosphates. The effect of the fertilizer, however, is 

 undoubtedly somewhat obscured by the fact that there is a 

 gradual increase in the proportion of clay in the soil from plot 

 1 toward plot 13. This difference makes the soil colder at the 

 end of the field, where the more soluble phosphates were used, 

 than at the other end, and this condition undoubtedly tended to 

 increase the proportion of immature corn. 



The percentage of soft or immature corn as compared with 

 sound corn on the several plots is shown below : — 



Percentage of Soft Corn as compared ivith Sound. 



Plot 1, no phosphate, 48 



Plot 2, Arkansas rock phosphate, 66 



Plot 3, South Carolina rock phosphate, . . . . . .87 



Plot 4, Florida soft phosphate, 48 



Plot 5, basic slag meal, • • .30 



Plot 6, Tennessee rock phosphate, 51 



Plot 7, no phosphate, 84 



Plot 8, dissolved boneblaek, 86 



Plot 9, raw bone, 58 



Plot 10, dissolved bone meal, 44 



Plot 11, steamed bone, 52 



Plot 12, acid phosphate, 67 



Plot 13, no phosphate, 80 



In the experiment in top-dressing mowings with different 

 materials used in rotation since 1895 the crop was much below 

 the average on account of the great deficiency in rainfall, espe- 

 cially during the latter part of the season. The rates per acre 

 were as follows : — 



Rowen 

 CPounds). 



Plot 1, bone and potash, 



Plot 2, slag and potash (in place of ashes used in earlier years), 

 Plot 3, manure, 



963 

 710 

 720 



