EXPERIMENTS CONDUCTED WITH A VIEW TO CONTROLLING DISEASE. 57 



TABLE XXXII. SERIES 2. PARADISE, ETC., ROOTS AND COMBINATIONS continued. 

 No. Variety. 



38 Jonathan . . 



39 Shockley .. 



40 Shockley .. 



41 Shockley . . 



42 Shockley .. 



There is no variety entirely free from Pit, but Jonathan has the smallest percentage. 



The highest percentage of Pit was found in Baldwin, but only one tree produced fruit, and that 

 was less than a pound. Shockley was consistently pitted on every kind of stock. 



The variet}' which produced the highest yield was Cleopatra on Paradise on Spy, and it had also 

 the highest percentage of Pit, with the exception of Shockley. 



SERIES 3. NORTHERN SPY ROOTS WITH ROME BEAUTY AS INTERMEDIATE STOCK. 



f'LP^AN. PITTED. PER CENT. PITTED. Per 



No. Variety. Stocks. <*}_ ~5fT'w^d. 'ofT'w^cl- "~olT Vf^d- p ^ 



Trees. falls. Trees, falls. Trees. falls. all. 

 Ibs. oz. Ibs. oz. ibs. oz. Ibs. oz. Ibs. oz. 



43 Baldwin .. .. Rome Beauty on Spy 



44 Cleopatra . . . . ' ' 0-0 0-6 



45 Esopus Spitzenberg ,, 1-8 1-8 



46 Jonathan . . . . ,, 



47 Shockley .. .. 1-9 1-1 0-8 32 32 



48 Baldwin .. .. 2-12 2-8 0-4 9'9 9- 9 



49 Cleopatra . . . . 5-8 5-8 



50 Esopus Spitzenberg 10-0 9-0 ]-0 



51 Jonathan .... 1-3 1-3 



52 Shockley .. .. 0-12 0-4 0-8 66-6 66-6 



The yields were very light, the highest being 10 Ibs., obtained from Esopus Spitzenberg, so that 

 there are no very definite results. 



Shockley and Baldwin were the only two varieties showing Pit. 



D. TILLAGE TESTS. 



14. AT GOVERNMENT EXPERIMENT ORCHARD, BLACKWOOD, SOUTH AUSTRALIA. 

 The effect of cultivation on the development of Pit should become evident as the trees become 

 older and the crops become heavier. The trees are now six years old, and the yield of both varieties 

 tested is fairly equal under the different systems of tillage. 



TABLE XXXIII. 

 TILLAGE TESTS. 



Test. N r o Variet y- Yield - pitted - P pitte<f' 



Ibs. Ibs. 



,.,,,,, j ,.,, , i 1 Cleopatra 481 2i 5 - 



Land subsoiled, ploughed once, and summer tilled . . j j ^-v, 41 



., . I 1 Cleopatra 28J 14 oz. 3 1 



Land subsoiled, ploughed twice, and summer tilled . . j j on ^ n Qgi 



, , . ,. . i 1 Cleopatra 45 15 oz. 2 - 



Land not subsoiled, ploughed twice, and summer tilled j Jonathan 43f 3 oz. '4 



