25 Apeil, t'.'lT. I Wheat E.rperimi'ntx, Season 1916. 



253 



Mr. P. J. Stewart, the 

 experimenter at Car- 

 warp, writes: — "The 

 contrast in the uii- 

 luanured and manured 

 plots was most striking, 

 both in appearance and 

 ill the yield, and proves 

 that sowincr wheat with- 

 out manure in light soils 

 is a waste cf time, labour 

 and money." 



These tests were made 

 on new land. At Ouyen 

 the tests were carried out 

 on rich pine country, 

 which had been cropped 

 for four years in succes- 

 sion. The application of 

 30 lbs. of super, gave an 

 increase of H bushels 

 per acre, but the heavier 

 dressings gave no sub- 

 stantial increase in yield. 



At Cowangie the plots 

 were sown on land which 

 had been specially fal- 

 lowed with selected 

 Federation seed, and 

 gave phenomenal re- 

 turns, the unmaniired 

 plot giving no less than 

 37 bushels 42 lbs. per 

 acre. The plot dressed 

 with 30 lbs. super, gave 

 44 bushels 31 lbs., an in- 

 crease of 6 bushels 49 

 lbs. per acre, worth at 

 normal prices £1 3s. [Jer 

 acre. The plot dressed 

 with 60 lbs. su|)er. per 

 acre returned 45 bushels 

 34 lbs., an increase of 

 7 bushels 53 lbs. Tak- 

 ing' the average of all 

 centres, the most profit- 

 able dressing to apply in 

 in such a season as the 

 present is 60 lbs. per 

 acre. Taking the yields 

 as a whole, they afford 

 remarkable testimony of 

 the fertility of niallee 



