116 



Barn and Field Experiments in 1916 



Sulphate of Ammonia and Nitrate of Soda Experiment. 

 Yield of Potatoes per Acre. 





Treatment 



Merchantable 



Culls 



Plot No. 



Bbls. 



Bus. 



Bbls. 



Bus. 



441 



455 



.Average 



?i nitrate of soda 

 5 nitrate of soda 



f^ sulphate of ammonia 

 'i sulphate of ammonia 



?5 nitrate of soda 1 

 f, sulphate of ammonia ( 

 j nitrate of soda { 

 i sulphate of ammonia i" 



?5 nitrate of soda 1. 

 J organic i 

 I nitrate of soda I 

 Jj organic 1 



J, sulphate of ammonia l_ 

 %, organic ( 

 1 sulphate of ammonia ( 

 i organic ( 



130.6 

 150.1 

 140.3 



359 

 412 

 385 



27.5 

 2,6 

 5.0 



21 

 7 

 14 



442 



456 



-Average 



135,8 

 143.5 

 139.6 



373 

 395 



384 



4.9 

 4,2 

 4.1 



14 

 12 

 13 



. 443 



457 



-Average 



131.0 



143.7 

 1.37.3 



360 



378 

 369 



6.1 



1.8 

 4.0 



17 



5 

 , 11.0 



444 



458 



-Average 



136.6 



144.34 

 140.5 



376 



397 

 386 



4.7 



1.6 

 3.1 



13 



4.4 

 8.6 



445 



459 



Average 



142.4 



144.1 

 143.3 



392.71 



396.22 

 392.97 



6.9 



1.1 



4.0 



18.9 



2.9 

 10.9 













From the above table it will be seen that the yields from 

 these different mixtures were exceedingly uniform. There is 

 only 6 barrels per acre difference between the best and the poor- 

 est yielding- mixture and in field experiments of this kind such 

 a small difference has no significance. 



The result for the 3 years of the experiment are griven in 

 the following table. 



Sulphate of Ammonia and Nitrate Soda Experiment ipi4, IQ15 



and igi6 

 Yield in Barrels Per Acre, 



Treatment 



1914 



1915 



1916 



Average 



g nitrate of soda 



120 



113 



. 140 



125 



g sulphate of ammonia 



110 



120 



140 



123 



■1 nitrate of soda, J sulphate of ammonia 



116 



119 



137 



124 



J nitrate of soda, J organic 



120 



111 



140 



124 



^ sulphate of ammonia, J organic 



110 



109 



143 



121 



.)f 



