484 



Journal of Agrumlture, Victoria. [10 Aug., 1918. 



Though the results obtained from acetate of copper were excellent, 

 the high price of the material compelled us to abandon the tests with it. 

 Experiments were continued with Bordeaux and copper soda, the latter 

 always giving better results than the Bordeaux ; in fact, during the last 

 three seasons, we have used copper soda exclusively for " Leaf Curl," and 

 with excellent results at both orchards. 



The Time to Apply. 

 By spraying the trees just before or when the earliest buds are 

 showing pink, " Leaf Curl " can be cured. The mixture used with com- 

 plete success was copper soda, 6.8.40. 



Jonathan Blossom — shows 

 when first spraying should 

 be made. 



Jonathan Blossom — shows when second 

 spraying should he made. 



Black Spot of Apple. 



(Venturia inaequalis (Che) Aderh — formerly known as Fusicladium 



dendriticum) . 



Experiments in the treatment of Black Spot were made on six dif- 

 ferent varieties, all of which are commonly grown throughout- the State. 



The disease, as before mentioned, was very prevalent in the orchards 

 where the experiments were conducted, in wet years the bulk of the apple 

 and pear crops being so badly aifected as to be unsaleable. 



The past season's rainfall was above the average at Drouin (see table 

 on page 488). The spraying season, September and October, was excep- 

 tionally wet. During these months there were 43 wet days and 11^ 

 inches of rain fell. Notwithstanding this excessive rainfall, the experi- 

 ments were very successful, as will be seen from the results. 



Last season we confined our experiments to the lime sulphur spray 

 principally, using the commercial product. Three different brands were 



