72 DESTRUCTIVE INSECTS OF VICTORIA : 



from what I can learn ours would appear to be different, 

 excepting in habits, to the above introduced American 

 species. 



This species of orange aphis has not, so far as I am 

 aware, yet spread far throughout the colony, and with 

 a little care and watchfulness we may yet be able to keep 

 it within reasonable limits, where it may be the easier 

 dealt with. 



Prevention and Remedies. 



In another part of the book, I have endeavoured to 

 point out the absolute necessity, if an orangery is to be a 

 success, of selecting suitable soil, position, light, and last, 

 but not least, good drainage, shallow planting, and plenty 

 of room each way between the trees, and in very exposed 

 situations a good breakwind of some suitable material 

 — avoid prickly acacia or whitethorn shelters to an 

 orchard — is oftentimes a necessity. 



When the trees are planted out and commencing to 

 start into growth, watch them carefully, and on the least 

 sign of either aphides or scale lose no time, but tackle it 

 at once, always bearing in mind that a very few scales if 

 left upon a tree unheeded may stock, in a single season, 

 the whole orchard with their abominable progeny. 



It has also been pointed out that a good spray 23ump 

 and gear (none of your toy pumps) should be part of the 

 stock-in-trade of every orchardist who wants to grow 

 good fi'uit and make it pay. Slovenly orchards may last 

 for a time, but the day of reckoning must and will come ; 

 but, unfortunately, the neglected orchard may in the 

 meanwhile be the nursery or depot from which orchards, 

 whose owners try to keep clean, receive a constant supply 

 of noxious insects all and sundry, and thus their praise- 

 worthy efforts are rendered futile. I feel more and more 

 convinced of the necessity of some means by which care- 

 less growers could be reached and compelled to take 

 reasonable action in keeping their orchards clear of insect 

 pests as well for their own good as for that of their 

 more deserving neighbours. 



