1904.] Spraying for Codling Moth. 303 



entered would be unable to climb the sides of the basin. 

 A number could also be caught by arranging here and there 

 tarred boards, care being taken that the tar be renewed often 

 enough to keep the " trap " moist and sticky. 



Some specimens of apples attacked by " apple scab," 

 Fusicladium dendriticum, have recently been forwarded to 

 the Board. This fungus first appears on 

 Apple Scab. the leaves, and thence passes on to the 

 young fruit. It is now too late to spray ; 

 but all diseased fruit should be collected and burned. 

 It would be useful next spring to spray at intervals with 

 dilute Bordeaux mixture, commencing first when the blossom 

 is expanding. 



Some black currant leaves badly infested with Gloeosporium 

 ribis have also been received. This fungus is very injurious 

 during certain seasons to the foliage of currants and goose- 

 berries. The diseased leaves should be collected as they fall 

 and burned ; and in the spring the bushes should be sprayed 

 with dilute Bordeaux mixture when the leaf-buds expand. 



Some experiments have been carried out by the Department 

 of Agriculture of Victoria with a view of testing the efficacy 

 of various solutions for destroying Codling 



Spraying . for Moth The cat erpillars of this moth are 

 Codling- Moth. t . v . 



exceedingly destructive to the apple and 



pear crop in this Colony, but growers are said to be dubious of 

 the efficacy of arsenical compounds as a means of combating 

 the pest. Their value, however, when properly applied, seems 

 to be clearly demonstrated in these experiments, which are 

 therefore of considerable interest to fruit growers in this 

 country. The use of Paris green, it may be observed, is recom- 

 mended in the Board's leaflet No. 30, but in these experiments 

 spraying was carried out more frequently than is suggested 

 therein. 



Blocks of trees were selected in orchards where the moth was 

 very prevalent, and the trees were sprayed from four to seven 

 times in the course of four months. The Paris green solution 



