IIU 



Agricultural Juuriial of Victuria. 



pliosphoric acid only has been applied. These two facts are clearly 

 illustrated in the following- first three colunms of figares taken from 



In nine out of the eleven crops the nitrogen and phosphoric acid 

 returns are greater than the phosphoric acid only. In the two other 

 cases, where this is the reverse, one crop it will be observed is lucerne, a 

 crop where an increase from nitrogen manuring could not be expected as 

 a general thing ; while in the case of the other crop, teosinte, there are 

 reasons to think, judging from the returns on section F, that an irregu- 

 larity might be responsible for the smaller yield. A comparison of the 

 fourth column of figures with the third would appear to indicate that 

 the further addition of potash to the phosphoric and nitrogenous manure 

 used in the case of the third column has shown some effect on six out 

 of the eleven crops, but that the additional increase in yield produced 

 by this ingredient has been generally speaking not a marked one. 

 These results are in every way confirmatory of those obtained from a 

 large number of hay crops grown last year on much larger experi- 

 mental plots in the South of Victoria. They point, as the results of 

 those plots did, to phosphoric acid as the prominent soil deficiency, 

 nitrogen as the second active ingredient in the production of increased 

 yield, and potash as a manurial requirement that might almost 

 be neglected on the better class lands, but that would require 

 consideration on the lighter sandy soils of lower fertility. The results 

 of the experiments referred to are given below : — 



EXPERIMENTAL HAY CROPS GROWN IN FIVE DIFFERENT DISTRICTS OF 

 SOUTHERN VICTORIA 



Average of 30 experimental | 

 fields in tons . . . . ) 



INCREASES IN YIELD PRODUCED BY DIFFERENT MANURES. 



Phosphoric 

 Acid. 



-65 tons. 



Phosphoric 



Acid and 



Potash. 



Phosphoric- 

 Acid and 

 Nitrogen. 



•87 tons 



J -20 tons. 



Phosphoric 



Acid, Nitrogen 



and Potasli. 



1-27 tons. 



Dates of Sowing and Harvesting. 



The dates of the sowing of the various crops will vary a good 

 deal for different parts of Gippsland and the Western district. The 



