Fungoid and Insect Pests 107 



gallon of warm water is then added, bringing the 

 solution up to 4 gallons. 



Spraying is usually done in the summer months 

 in between the growths, that is, when one growth 

 has finished and before the next starts. For spray- 

 ing at such times each gallon of the emulsion is 

 diluted with ten gallons of water ; but for trees that 

 are in active growth fifteen gallons of water to one 

 of the emulsion will be strong enough for the young 

 foliage to withstand. For badly affected trees two 

 sprayings about a fortnight apart may be necessary 

 to eradicate the scale. 



Resin Wash. Owing to the scalding effect upon 

 the leaves and fruit that sometimes follow the 

 use of the various oil sprays, some growers prefer 

 spraying their citrus trees with a resin wash made 

 up in the proportion of 1 Ib. resin, 1 Ib. washing 

 soda, |- Ib. soap, to 5 gallons of water. This is 

 applied in a similar manner as the oil sprays, and 

 usually but little damage to trie foliage of the trees 

 is done. 



No spraying of citrus trees should be attempted 

 if the trees are in want of moisture, as when in this 

 condition the leaves of the trees have often not 

 sufficient vitality to withstand the suffocating 

 effects of the spray, and so fall off; whereas if the 

 spraying takes place when the leaves are full of 

 moisture, such as after an irrigation, and other con- 

 ditions are favourable, ill-effects seldom follow. 



