COMMON JNSECT PESTS 159 



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Agaththi. 



(i) Is bored by Azygophleps ; borer should be cut out. 

 (ii) Weevil (Alcides) may be collected by hand, 

 (iiij Tobacco Caterpillar (Prodenid) may be hand-picked ; 

 in bad cases ground may be irrigated or trenched. 



Mango. 



(i) The Mango Beetle (Batocera) bores the branches as a 

 large white grub. It should be cut out and the wound tarred 

 over. 



(ii) The Mango Hopper (Idiocerus) is often a serious pest 

 and can only be controlled by spraying early in the season. 



(iii) Fruit fly (Dacus) attacks the fruit itself. All attacked 

 and fallen fruit should be destroyed. 



(iv) The Mango Weevil lives inside the stone of the fruit. 



Pomegranate. 



The caterpillar of a small Blue Butterfly (Virachola) 

 bores into the fruits. Attacked fruits should be destroyed. 

 Grapes. 



(i) Cockchafers often do damage. They are probably 

 best dealt with by spraying a sweetened arsenical poison on 

 to the leaves. 



(ii) Scales (Aspidiotus) can only be treated by spraying 

 with a contact poison such as rosin wash. 

 Palms. 



Both Coconut and Toddy palms are attacked by the 

 Rhinoceros Beetle (Orvctes) and the Red Weevil (Rhyncho- 

 phorus). The former bores into the crown and the latter 

 then lays its eggs in the hole made by the former. The 

 grubs of the Weevil bore into the tree and ultimately kill it 

 after which the grubs of the Rhinoceros Beetle live in the 

 decaying stem. Old dead stumps should be cut down and 

 burnt and accumulations of leaves, etc., under the trees 

 should be avoided, as the large white grubs of the Rhinoceros 

 Beetle will breed in any heaps of decaying vegetable rubbish, 



Bordeaux Mixture. 



Bordeaux mixture is a preparation of copper sulphate and 

 quicklime in water. It may be used strong or weak. The 

 strength generally regarded as a standard is : — 



Copper sulphate 51b. 



Quicklime 51b. 



Water ... t 50 gallons. 



