126 



Food for Each lOO pounds of high-grade sulphate of potash will 



Plants represent about lyi per cent of potash when made up into 

 a ton mixture. 



For illustration, a fertilizer which has been used with 

 good results on the Station farm for tobacco was made up 

 as follows : 



Dissolved South Carolina rock 'j300 ^bs. 



Tankage ( i c per cent) 400 lbs. 



Nitrate of Soda 100 lbs. 



High-grade sulphate of potash 200 lbs. 



Total 2,000 lbs. 



This contained approximately : 



Phosphoric acid (P.,0.) 9 to 10 per cent. 



Potash (K,0) '..'. 5 



Ammonia 3 " 



Sulphate of ammonia and Nitrate of Soda arc particu- 

 larly valuable for use on the plant beds for growing strong 

 and early plants. For this purpose they are applied at the 

 rate of about 100 pounds per acre, sown broadcast over 

 the land, in which case they are mixed with rock, plaster, 

 or dry earth in order to facilitate application. They are 

 also sometimes applied in solution at the time of watering 

 the plants, in which case they are added to the water at the 

 rate of one ounce of material for every four or five gallons 

 of water. 



SUMMARY OF BULLETIN No. 150. 



Value of Different Forms of Ammoniates. 



r . Ti In 1898 the New Jersey Agricultural 



Losses m Use j. y o- j°- r 



n ^ ,. r^xperiment Station commenced a series or 



or Ordinary ^ . , . , . , 



. . ^ experiments to determine the practical use- 



Ammoniates r Y r j-n- r rr -i- 



-.. , rulness or dirrerent forms or rertilizer ammo- 



iVl £3SLir6Cl 



niates, including farmyard manures. A 

 special study was made of farmyard manures, and the losses 

 of ammonia through improper handling or careless- 

 ness was determined. These losses averaged over one- 

 third of the ammonia, over one-half the phosphoric acid, 

 and nearly one-half the potash. To illustrate practically, 

 one ton of the average farmyard manure as experimented 

 with contained 10 pounds of ammonia, 6 pounds of phos- 



