EXPERIMENTS W ITH A VIEW TO CONTROLLING THE DISEASE 



The rainfall for the first three months of 1912 was as follows, and the apples were nicked on 

 29th March :— 



Indies. 



January . . . . . . . . - 74 



February . . . . . . ..1*82 



March '02 

 All the trees were treated alike as far as spraying is concerned. Just as the buds began to 

 open, they were sprayed for " Black Spot " with a mixture consisting of 7 lbs. Milestone and 5 lbs. 

 freshly slaked lime to 50 gallons of water, with 4 lbs. alum added. Then they were sprayed with 

 arsenate of lead for the Codlin moth three times, viz., 12th and 23rd October and 22nd November. 



Table XIV. — Result of First Year's Manurial Experiments with Fsopus Spitzkniikru, at 



Mr, Hatfield's Orchard, Box Hill. 



Plot No. 



Manure. 



Per Tree. 



No. of 



Trees. 



Yield of 

 Marketable 



Pitted. 



I'l-I cent ji^'c 



oi Pitted 









a pples. 





to Clean. 







lb. 





lbs. 



lbs. 



lbs. 





Sulphate of ammonia 



\ 





1,020 





•54 





Ordinary superphosphalc 

 Sulphate of potash 





8 











Sulphate of ammonia 







610 



H 



•24 





Bonedust 



i 



8 









Ordinary superphosphate 

 Sulphate of potash 



f 



i 













Sulphate of ammonia 







813 





1-5 



•1 



Ordinary superphosphate 

 Kainit 



i\ 



8 











Ordinary superphosphate 



1* 





893 



2i 



•28 



• ( 



Sulphate of potash 



Green manuring every alternate year 



2 



8 









5 



No artificial manure — check 





8 



440 



6 



1*8 



6 



Slaked lime 



2A 



8 



860 



6J 



•61 



' ! 



Ordinary superphosphate 

 Sulpliate of potasii 



H 

 i 

 2 



8 



HHH 



6 



•67 



• 



Ordinary superphosphate 



l| 



8 



644 



1 



•15 





Sulphate of ammonia 



T 











9 



No artificial manure — check 





8 



600 



27 



4-5 



This is a remarkably small percentage of Bitter Pit on the trees, but this variety is generally 

 supposed to develop it mostly in store. However, in another portion of the orchard, where there 

 was a much smaller crop, there was over 17 per cent, on the trees. Six trees of the same variety 

 were selected for comparison and picked at the same time. The yield was 200 lbs. of marketable 

 fruit and 54 lbs. pitted. The very high relative percentage of pit on these trees was attributed by 

 the grower to the small crop, and the fruit being overgrown. The average; yield per tree on the 

 experimental plots of marketable fruit was 94 lbs., while here it was only 43 lbs., or less than half. 



2. At Government Farm, Bathurst, New South W alks. 



The Government Experiment Farm adjoins the city of Bathurst, which is 145 miles west 

 of Sydney. The orchard has an area of 43 acres, of which 35 acres were planted in 1896. The bees 

 in this portion are now about sixteen years old, and there were two rows of Cleopatras in this division 

 which were available for my proposed manurial experiments. Tin* manager of t he farm, .M r. IVaeoek, 

 had already begun to experiment with manures, so that it was necessary for my purpose to utilize 



j- 2 



