INSECTS, DISEASES, AND SPRAYING 67 



bug which sucks the sap from the fruit. 

 Eggs are laid early in the spring, the young 

 hatching very soon, about the first of May, 

 feeding with the parents on the host. Dur- 

 ing July the winged insects scatter and are 

 found on a great variety of plants. 



Application of pyrethrum powder has 

 proved to be the best remedy so far. Contact 

 sprays, like kerosene emulsion, are also useful. 

 Poisons are useless as the insects do not 

 chew their food, but suck it out of the plant 

 tissues. 



The red spider is the bothersome pest 

 in the greenhouse. It may be controlled 

 somewhat by syringing the foliage every 

 pleasant day and by wetting down the walks, 

 making a moist atmosphere in the house. 



Fungous diseases. — The most important 

 fungous disease is a leaf spot. This makes its 

 appearance in the form of small, discoloured 

 spots, being most abundant about the time of 

 flowering. At first these spots are of a reddish 

 or purplish tint, a little later increasing in size, 

 resulting in the death of the tissue and a 

 change in colour to white in the centre bor- 

 dered by red or purple at the edges of the 

 spots. Practically all strawberries are sus- 



