180 



Agricultural Journal of Victoria. 



exceeded tlie ton. There are five fields only in this district where we 

 have the full results for comparison. The average of these five fields 

 on plot 3 is 2,084 lbs. increase. Comparing* this with the increased 

 yield on plot 4, where nitrogen has been left out, we find there has 

 been a falling off of 7^ cwt. On plot 6, where potash has not been 

 included, the reduced yield amounts to approximately 4 cwt. ; while 

 on plot 5, where phosphoric acid has been left out, the loss amounts 

 to over 14 cwt. The Southei'n soils, so far experimented on, show 

 then, like the Central, phosphoric acid as their dominant deficiency as 

 far as the hay crop is concerned, and to the point that th& small 

 number of results allow of generalisation ; while the benefit of both 

 nitrogen and, to a less extent, potash manuring seems apparent. 



Results in Potato Manuring. 



Experiments have also been cai'ried out in the manuring of 

 potatoes in the Southern districts, as shown in the same tables, and 

 the results so far, taking the average, seem to confirm those of the 

 hay crop. It will be seen, on reference to the tables, that a complete 

 manure medium dressing has resulted in an increase of 4,927 lbs. of 

 potatoes. Where nitrogen has been left out there has been a loss of 

 13 cwt.; potash of lO^- cwt. (nearly), but the omission of phosphoric 

 acid in the manure has resulted in a loss of over 37 cwt. to the acre. 



The few experiments that were carried outlast year in the Western 



district have given most gratifying results, as is evident in the 



following tables : — 



TABLE D— SHOWING INCREASED YIELDS IN LBS. DUE TO MANURING 

 IN THE WESTERN DISTRICT. 



Hay Crops. 



Number ot Plot 

 Manure Applied 



Mr. Edwards, Hamilton . 

 ,, R. Pitman, Hamilton 

 ,, Greenham, Dartmoor 

 ,, Bremer, AUansford 



Average of 4 fields 



Mr. Edwards, Hamilton .. 

 Mr. Greenham, Dartmoor 



Grain Crop in Bushels. 



110 I 18 '67 I 22-34 



1267 



6 17 



Rape Crop in Pounds. 



40,680 I 46,620 | -51,580 | 54,540 | 8.374 



A Soil showing little or no response to Phosphoric Acid. 



Mr. John Glasgow, Wangoon. 

 Weight of Wheat Sheaves 



in pounds .. I 1,300 I 1,-500 I 1,800 1 600 I 1.900 



Grain in bushels .. | 6 66 | 8-50 834 3-0 5-33 



1917 



I -53,547 



1.200 

 4-67 



