11 



per acre. (Plot 2 willioiil nitrate of soda; Plot 5 with 

 nitrate of soda.) 



The use of 207 pounds of muriate of potash per 

 acre, in addition to acid phospliatc and nitrate of soda, 

 gave an increase of 173 pounds of cabbage per acre. 

 (Plot 4 without potash; Plot 5 with potash.) 



The use of acid phosphate, at the rate of 620 pounds 

 per acre, in addition to nitrate of soda and muriate 

 of potash, gave an increase of 1,915 pounds of cabbage 

 per acre. (Plot 3 without acid phosphate; Plot 5 with 

 acid phosphate.) 



An application of 885 pounds of Thomas phosphate 

 per acre, in addition to cotton seed meal and muriate 

 of potash, resulted in an increase of 1,021 pounds of 

 cabbage per acre. (Plot 9 without Thomas phosphate; 

 Plot 8 with Thomas i)hosphate.) 



In a complete fertilizer, Thomas phosphate gave 

 an increase over acid phosphate of 486 pounds of 

 cabbage per acre. This increase, also noted in experi- 

 ments carried on at Aiil)urn, may have been partly or 

 entirely due to the lime contained in Thomas phos- 

 phate. The l)cneficial effects of lime are indicated in 

 Plot 6. (Plot 5 with acid phosphate; Plot 7 with Thomas 

 phosphate.) 



In whatever combination used, cotton seed meal 

 gave better results than nitrate of soda. This would 

 probably be expected, since all the fertilizers were 

 applied before the plants were set. Nitrate of soda 

 is most effective when used as a top-dressing, (a) 

 Used with muriate of potash only, cotton seed meal 

 gave an increase over nitrate of soda, of 3,156 pounds 

 of cabbage per acre. (Plot 3 with nitrate of soda; Plot 

 9 with cotton seed meal.) (b) Used with muriate of 

 potash and Thomas phosphate, cotton seed meal gave 

 an increase over nitrate of. soda of 1,776 pounds of 

 cabbage per acre. (Plot 7 with nitrate of soda; Plot 

 8 with cotton seed meal.) (c) Used with acid phos- 

 phate only, cotton seed meal gave an increase over 

 nitrate of soda of 441 pounds of cabbage per acre. 

 (Plot 4 with nitrate of soda; Plot 10 with cotton seed 

 meal.) 



The fertilizer combination giving the highest yield 

 per acre for the three years was that used on Plot 6; 

 namely, acid phosphate 620 pounds per acre, nitrate 

 of soda 310 pounds per acre, muriate of potash 207 



