590 Agricultural Journal of Victoria. 



From appearances there were only a few instances in which indica- 

 tions of an operative effect of gypsum were present, but in the absence 

 of sufficiently numerovis and reliable returns no conclusions one way 

 or the other can be drawn. 



The Object Sought in the Experiments. 



The scope of the field of inquiry covered by the expeinments is a 

 wide one, and answers have been sought, not only as to soil deficiencies^ 

 but as to particular forms of plant food, and combinations best 

 meeting these deficiencies. An examination of the manure lists of 

 the different sets will disclose the attempted solution of the following- 

 questions : — 



1. The eft'ects of applications of phosphoric acid alone. 



2. Of phosphoric acid and potash. 



3. Of phosphoric acid and nitrogen. 



4. Of phosphoric acid, nitrogen and potash. 



5. The comparative effects of sulphate of ammonia and nitrate 



of soda in combination with phosphoric acid alone, as 

 well as in combination with phosphoric acid and potash. 



6. The effect of light, heavy and medium additions of a nitro- 



genous manure to medium dressings of superphosphate. 



7. The effect of light additions of a nitrogenous manure to light 



applications of a superphosphate. 



8. The comparative effect of equal quantities of the three forms 



of phosphatic manure, viz., superphosphate, Thomas 

 phosphate and bonedust. 



9. The comparative effect of equal quantities of Thomas 



phosphate and superphosphate, both alone, and in 

 combination with the two forms of nitrogen and the 

 two forms of potash. 



10. The effect of equal quantities of sulphate of ammonia with 



the sulphate and chloride of potash. 



11. The effect of equal quantities of the chloride of potash with 



nitrate of soda and sulphate of ammonia. 



The Results of the Ybae's Experiments. 



There were more than 70 fields established last year in Southern; 

 Victoria, but owing to the loss of many crops through caterpillars 

 and heavy and continuous rains during harvesting, results of relia- 

 bility were finally available from 50 fields only. Out of the 50 fields 

 the manures of the G sets were applied on 23, those of the on 14, 

 and those of 02 on 13. As the manurial applications of the three 

 sets agreed in certain respects — namely, with regard to questions deal- 

 ing principally with the attempt to determine soil deficiencies rather 

 than to solve the numerous other problems referred to — it has been 



