Phosphate Fertilisers. 



209 



glen Viticultural College. They were arranged in four sets, planted 

 respectively with early and late wheat, and early and late oats. 

 Each set contained nine plots, of which four were check plots, not 

 fertilised at all, and the remaining five were dressed with different 

 phosphates, as shown in the accompanying table. The application 

 was in each case such that the phosphorus pentoxide applied would 

 be equal to a dressing of good superphosphate at 100 pounds to the 

 acre. The fertiliser was sowed with the seed, except in one case, in 

 which it was applied as a top dressing in the spring. 



The area of each plot was 106 links by 5 links, and of this three 

 links at either end was discarded on harvesting, so thai the area 

 on which results were based was 100 links by 5 links ( = l-200th acre). 

 The results are given as total produce per acre, tut when ripe 

 enough for grain. The increase by manuring is reckoned as the 

 difference between plot considered and adjacent check plot. (In the 

 case of superphosphate take the average of the check plots on either 

 side.) 



College Eclipse 

 Federation Wheat Wheat Brown Oats Algerian Oats 



(early ripening) (later ripening) (very early ripening) (later ripening) 



lb. lb. lb. lb, lb. lb. lb. lb. 



- 412 - - 725 - - 575 - - 575 - 



Nil - 



Metaphosphate 578 - 166 - 981 - 256 - 1075 - 500 - 875 - 300 



(applied with 



seed) 

 Metaphosphate 459 - 53 - 778 - (50 - 002 - 37 - 700 - 125 



(top dressed 



in Spring) 

 Nil - - - 406 - - 712 - - 625 - - 575 - 



Pyrophosphate- 543 - 137 - 803 - 91 - 800 - 175 - 800 - 225 



(applied with 



seed) 

 Orthophosphate 600 - 157 - 862 - 150 - 825 - 250 - 787 - 2G2 



(applied with 



seed) 

 Nil - - - 413 - - 712 - - 575 - - 525 - 



Superphosphate 631 - 154 - 916 - 228 - 812 - 212 - 862 - 262 



(applied with 



seed) 

 Nil - - - 512 - - 725 - - 625 - - 075 - 



