EXPERIMENTS Willi A VIEW TO CONTROLLING THE DISEASE 



89 



'i. At Oovkknmkn t FjXpkkimkmt Orohaku, Klackwood, South Australia. 



The experiments are being conducted at the Oovermuent Kxperiment Orchard, situated 

 about 12 miles from Adelaide, in the Mount Lofty Ranges, about- 8(H) feet above sea-level, and 

 8 miles from the sea-coast. 



Ever since the inception of the orchard in 1008, Mr. Oeorge Quinn, Horticultural Expert, 

 has initiated a scries of experiments with various stocks in order to test their influence upon the 

 development of Hitter Pit in apples, and this is being followed up with inanurial, pruning, tillage, 

 and irrigation experiments, with the same object in view. 



I^rom the very nature of these experiments, a number of years are neeessarv to realize their 

 full value, but they will afford practical object-lessons, not only to the present generation of fruit- 

 growers, but their value will become enhanced the longer the period over which they are extended. 



The soil of the Orchard is a reddish loam, with a good clay sub-soil at a depth of from !) to I L' 

 inches, and previous to being planted it had grown hay for a number of vears. The following 

 chemical analysis will show the essential constituents of tin* soil ; - 



Hi it ml . 



Light Boil J f* ' 

 Dark Soil j jj- \ 



KKOM SOILS IN WHICH 



ATPLK TKKKS ARK UKilWIMI 



WlIU 'U HAVE 



iioiiNK fruit 



THIS 



SKASON, 11)12. 













Nut urn of Soil. 



(Pi O fl ) 



Phosphoric 



A fill. 



I'utllKll. 



Lime 



Nttrogon. 







Pel rent. 



Per cent. 



IVr 



cent . 



Per oen1 





Per cent, 



8-in, Surface Soil . . 



0*028 



0 '076 



0' 



220 



0*076 





87 '5 



lo-iu. Subsoil 



0*006 



0*067 



0* 



I8J 



0*015 





68 



8"in. Surface Soil . . 



0*032 



0-077 



0' 



L96 



o • 1 1 1 





1)2 'o 



9 -in, Subsoil 



0*023 



0*090 



()• 



2.H8 



0*058 





85 



three yeftTS the rainfa 



11 has been 



ra1 her va pia ble, 



ranging from 



or 



».70 inches 



in to W.'M) inches in !<)()!). The record for each month is eaven from the time the stock lost 



apple trees were planted in August, 1!K)S. 



RAINFALL AT (IOVKKNMKNT KX I'KKl M K NT ORCHARD, ltLA< ' K \V( MM), SOUTH AUSTRALIA. 



Month. 1906, 1000. 1010. 1911. LOIS. 





Inches. 



1 nches. 



Lnohcs. 



I nches. 



Inches. 



January . . . . 





•98 





•23 



•25 



February 





•72 



Nil 



2*94 



•80 



March 





'86 



5-51 



•w 



•67 



April 





4*55 



■28 



1 -22 





May 





5*94 



5*91 



2 -03 





June 





8*86 



8*87 



6-02 





July . . . . . . 



2-02 



8*97 



6*68 



.V45 





August 



8*8] 



7*11 



2 '62 



1 -57 





September 



3*82 



li-72 



3*97 



\-\\) 





October 



8*79 



8*72 



2-46 



•70 





November 



•62 



8*12 



l •:><> 



•86 





J )ece,mber 



•71 



•61 



2-87 



2-16 





Total 



1 1 -70 



1 1 '86 



33*86 



25 '70 



1 '42 





For Six 



Pot Year 



POI J ear 



\*\>r Year 



For ,} Year 





Mont hs 











