REPORT OF MR. R. ROBERTSON 



265 



SESSIONAL PAPER No. 16 



Experiments with Fertilizers on Marsh Land. 



CO 



No. 



9 

 10 

 11 

 12 



Fertilizers Per Acre. 



3 casks lime, 800 lbs. basic slag 



3 II 400 lbs. bone meal 



3 II only 



3 II 400 lbs. Bowker's fertilizer (square brand) 



Yield 

 Per Acre. 



Bush. Lbs. 



52 

 62 

 60 

 67 



20 



28 



No lime, 800 basic slag 



M 400 bone meal 



Check, no fertilizer used 



No lime, 400 lbs. Bowker's fertilizer (square brand). 



49 

 59 

 53 

 63 



14 

 22 

 18 

 30 



6 casks lime, 800 lbs. basic slag 



6 II 400 lbs. bone meal . 



6 II only 



6 II 400 lbs. Bowker's fertilizer (square brand) 



51 

 61 

 60 

 61 



30 

 02 

 24 

 14 



The casks of lime used were the ordinary casks in which lime is sold in this 

 vicinity, weighing about 400 lbs. or 5 bushels. 



Crop of Hay on Marsh, 1908, where above Experiment with Fertilizers had been 



carried on in 1907. 



1 



2 

 3 

 4 



5 



6 



7 



8 



9 



10 



11 



12 



Fertilizers per Acre Used Previous Year, 1907. 



3 casks lime, 800 lbs. basic slag 



3 II 400 lbs. bone meal 



3 It only 



3 .1 400 lbs. Bowker's fertilizer (square brand) 



No lime, 800 lbs. basic slag 



M 400 lbs. bone meal 



Check, no fertilizer used 



No lime, 400 lbs. Bowker's fertilizer (square brand) 



6 casks lime, 800 lbs. basic slag 



6 M 400 lbs. bone meal 



6 II only 



6 II 400 lbs. Bowker's fertilizer (square brand) 



Yield 



per Acre, 



Hay. 



Tons. Lbs. 



2 

 2 

 2 



2 

 2 

 2 

 1 

 2 

 2 

 2 

 2 

 1 



1,280 



1,400 



1,000 



1,075 



776 



752 



1,816 



105 



980 



1,040 



440 



1,720 



SPECIAL EXPERIMENTS WITH FERTILIZERS. 



Experiments having been carried on for five years previous to 1904, without any 

 change of fertilizer per plot for the entire period, it was decided to discontinue the 

 use of fertilizers, with a view to determine to what extent the fertilizers already 

 applied would continue to supply plant-food for the crop. 



The field was seeded to grain, two series of plots each, oats, barley, wheat, peas 

 and mixed grain; each series running across the various plots where different 

 fertilizers had been used. With each kind of grain was sown Mammoth Red clover 

 at the rate of 10 lbs. per acre; on the other series of plots the grains were sown alone 

 without clover. This was the fifth crop since receiving any fertilizer. The ground 

 was ploughed in the spring and cultivated thoroughly. The plots were one-eighth 

 of an acre each. The following yields were obtained from these plots : — 



