Journal of Agriculture, Victoria. [lo Aug., 1911-.. 



LEAF SCALD OR FRUIT SPOT. 



{Entomosporium viaculaium, Lev.) 

 D. McAlpine, Vegetable PatJiologist. 



Although this disease has been known for a considerable time in Europe- 

 and America, it has only been discovered in Australia during the present 

 year (191 1). Being comparatively common in America, it has been men- 

 tioned in connexion' 

 with some of the 

 States of the Com- 

 monwealth as if it 

 existed here, but its- 

 presence has not 

 hitherto been defi- 

 nitely shown. 



Towards the end 

 of March, the- 

 disease was observed 

 in pears of the- 

 varieties B e u r r e 

 Capiaumont and. 



Williams' Bon: 

 Chretien, growing in 

 sandy soil about 16 

 miles from Mel- 

 bourne. Only a 

 few trees were 

 affected. A number 

 of other varieties- 

 growing in the same 

 orchards were quite 

 free. The quince 

 is very subject to> 

 this disease ; other 

 pip- fruits, such as 

 the apple, and stone- 

 fruits like cherry, 

 and peach may also 

 be attacked. It was 

 Found for the first 

 time on quince leaves- 

 by Inspector Farrell in May, and on the fruit early in June. 



Attention was first attracted to this disease by all the leaves of one shoot 

 becoming pale in colour, spotted all over, chiefly on the upper surface, and 

 then falling away early. Then other shoots showed similar symptoms, 

 until the entire tree became involved and its vigour and vitality evidently 

 much impaired. These spots are very- definite and distinct, generally 

 circular in outline; at first, of a ruddy colour, then they run into one 

 another .and become brownish and ultimately the black slightly projecting 

 fructification of the fungus appears upon them. 



The fruit also becomes spotted, the spots being of a ruddy browm 

 colour. They are the size of pin points to begin with ; then they gradually 



HEALTHY PEAR TREE. 



