70 



BITTER PIT INVESTIGATION. 



TABLE XL. SEEIES 1 NORTHERN SPY ROOTS WITH INTERMEDIATE STOCKS continued. 



No. Variety. 



11 Esopus Spitzenburg 



12 Esopus Spitzenburg 



13 Jonathan 



14 Jonathan 



15 Jonathan 



16 Shockley 



17 Shockley 



18 Shockley 



Stocks. 



Rokewood on Spy 



Spy 



Dunn's Favourite on Spy 



Rokewood on Spy 



Spy 



Dunn's Favourite on Spy 



Rokewood on Spy 



Spy 



Clean. Pitted. 



ie. Windfalls. On Tree. Windfalls. 



3 



2 



9 



<j 



10 



SUMMARY SERIES 1. 



The trees were planted in August, 1908, so that they were between three and four years old when 

 the first results were recorded. Several of the varieties had not fruited, and the highest yield was 

 58 apples, with 2 pitted. 



In 1913 the highest yield was 57 fruits, with 41 pitted. 



In 1914, when the highest yield was between 300 and 400 fruits, only 2 to 4 per cent, were 

 pitted ; and in 1915 the highest yield was 67, with none pitted ; but the yield on the whole was so 

 small and the, Pit so trifling that no definite results were obtained. 



THE EFFECT OF THE STOCK ON THE SCION. 



In TJt& Garden tor 22nd May, 1915, an instance is given of the stock influencing the scion in 

 the direction of preventing disease. Mr. E. Molyneux, of Swanmore Park, Hants, found that while 

 Cox's Orange Pippin succeeds fairly well, it is very liable to canker in the branches. Some ten years 

 ago he grafted trees of Irish Peach with Cox's Orange Pippin, with the result that they grew well, 

 bore freely, and did not show the slightest trace of canker. Formerly, it was worked on the free or 

 seedling stock, but by introducing the Irish Peach as an intermediate the distinct advantage was 

 gained of having the trees free from the devastating canker. 



D. TILLAGE TESTS. 

 15. AT GOVERNMENT EXPERIMENT ORCHARD, SOUTH AUSTRALIA. 



These trees are only five years old, and from the small amount of fruit produced no conclusions 

 can be drawn. It is only when the trees have reached full bearing that the effects are likely to become 

 evident of subsoiling and of ploughing once or twice in the season. 



TEST. 



Land subsoiled, ploughed once, 

 and summer tilled. 



Land subsoiled, ploughed twice 

 and summer tilled. 



Land not subsoiled, ploughed 

 twice, and summer tilled. 



TABLE XLI. TILLAGE TESTS. 



Clean. 



Pitted. 



Per 



rNo. 01 . s , cent. 



Fruits. On Trees. Windfalls. On Trees. Windfalls. Pitted. 



1 



4 



11 



18 



13 

 11 



2 



12 



