30 



BITTER PIT INVESTIGATION. 



The plot treated with sulphate of iron was planted a year later than the others, and that may 

 account for the very small yield. It was not deemed advisable to include this plot in the general 

 summing up of results. 



The total rainfall for 1915 was 30-45 inches, and for the six months from October, 1915, to March, 

 1916, the rainfall was comparatively light, being only about three inches (Appendix II.). For the 

 previous year (1914) the rainfall was only 15 inches, and the crop was a practical failure, so that the 

 manures for the past season may be presumed to have had their full effect. 



TABLE XII. 



MANURIAL EXPERIMENTS WITH CLEOPATRA AT GOVERNMENT EXPERIMENT ORCHARD, 

 BLACKWOOD, SOUTH AUSTRALIA 1915-16. 



Plot 



No. 



1 



2 



11 

 12 

 13 



Manure. 



No manure 



Superphosphate 



Superphosphate 



Lime 



Superphosphate 



Sulphate of potash . . 



Superphosphate 



Sulphate of potash . . 



Sulphate of ammonia 



No manure 



Superphosphate 



Lime 



Sulphate of potash . . 



Sulphate of ammonia 



Lime 



Sulphate of potash . . 



Sulphate of ammonia 



Superphosphate 



Sulphate of ammonia 



Stable manure 



No manure 



Sulphate of iron 



Total 



Clean. 

 Per No. of 

 Tree 



Ibs. 



11 



6 oz. 



H 



6oz. 

 6 oz. 



11 



2* 

 6oz. 

 6 oz. 



21 

 6oz. 

 6oz. 



11 



6 oz. 



70 



6 07,. 



Pitted. 



Per 



39 4189-5 3877-9 



78-12 229-9 



TABLE XIII. 



PERCENTAGE OF PIT IN RELATION TO YIELD AND MANURE. 



Manure. 



No manure 3 plots 



Superphosphate . . 



Lime 



Sulphate of iron . . 



Stable manure 



Superphosphate 



Do. 



Do. 



Do. 



Do. 

 Sulphate of potash + 



Average per plot 



Yield. 

 Ibs. 

 288 

 376^ 



316 



377J 

 360 



Do. 



362| 

 460| 

 270 



3-7 



5-5 



Percentage 

 of Pit. 



5-2 



7-4 



2-7 

 14-2 



3-6 

 10-6 



9-0 



4-1 



4-0 



3-7 



2-6 



