8 



Acid phosphate 437 pounds 



Nitrate of Soda 375 pounds 



Muriate of Potash 180 pounds 



Apply at the rate of at least 1,000 pounds per acre. 

 If there has heen much leaching due to heavy rains 

 during the winter, a second application of 400 to 500 

 pounds per acre of a complete fertilizer snould be 

 given several weeks later 



At the approach of the growing season, which will 

 A'ary considerably in the different sections of the state, 

 the plants should be stimulated by a side or top dress- 

 ing of 75 to 100 pounds of nitrate of soda per acre. If 

 the plants are sIoav about heading the top-dressing of 

 nitrate of soda should be repeated in 15 to 20 dajs. 

 Care should be exercised in the use of nitrate of soda, 

 as an excess will cause the formation of a succulent 

 head which will not hold up well in shipping. On the 

 other hand, the use of potash tends towards firmness. 



Fertilizer Experiments. 



The table below gives some results of experiments 

 with fertilizers at Auburn. 



The complete formulas, except for Plot 4, were made 

 Tip so as to analyze seven per cent, phosphoric acid; 

 six per cent, nitrogen; and nine per cent, potash. The 

 mixtures were applied at the time of planting, at the 

 rate of 1,500 pounds per acre. 



Formula 4 was made up of low grade materials, and 

 contains 5i/4 per cent, phosphoric acid, 4% per cent, 

 nitrogen, and 6% per cent potash, but it was applied in 

 excess to give the same number of pounds of actual 

 fertilizing material used in the three formulas above. 



Acid phosphate and Thomas phosphate were com- 

 pared, as shown on plots 3 and 5. The average for two 

 years shows a difference in yield of 6,216 pounds per 

 acre in favor of Thomas phosphate. Plot 5 whicli re- 

 ceived the Thomas pliosphate, produced the highest 

 yield of any of the plots receiving complete fertilizers. 



Note the difference in the source of nitrogen in Plots 

 1, 2, 3, and 4. 



Plot 3, with nitrate of soda as the source of nitrogen, 

 gave highest average yield with the highest average 

 increase over unfertilized plot, the other ingredients 

 being the same in kind and quantity, except slight dif- 

 ferences seen in Plot 4. This Plot, with cotton seed 



