SFRAYIXG CALENDAR 107 



sion (9^), unless the caustic emulsion with copper (io<;) 

 has already been applied. Spray gooseberries with 

 potassium sulphide for mildew. Spray plums with 

 weak emulsion for the leaf-curling aphis. 



April. — Spray apples either just before or during the 

 blossoming with nicotine (26) for psylla, unless they 

 have already been treated with the lime-salt wash (12). 



Spray cherries with Bordeaux mixture (9^ or <^c) 

 for cherry leaf-scorch. 



Spray gooseberries with potassium sulphide (24^) 

 for mildew, or with a weak emulsion containing 

 potassium sulphide (24^) for mildew and sawfly, if 

 the latter has appeared. 



Spray apples and plums with a weak emulsion, or 

 with potassium sulphide and soap (24), for red spider. 



Spray raspberries with arsenate for the beetle. 



Toward the end of the month spray apples, plums 

 and currants with weak emulsion or nicotine for 

 aphis. 



May. — Spray apples, just after the blossoms have 

 fallen, with arsenate for codling moth, or with weak 

 emulsion or arsenate for the winter moth and mottled 

 umber moth. A little later, spray them with weak 

 emulsion or arsenate for the lackey moth, small ermine 

 moth and sawfly. If mildew has been prevalent, 

 preference should be given to emulsions containing 

 potassium sulphide or copper sulphate, or the trees 

 should be sprayed with potassium sulphide (24^) 

 alone : at the same time, any shoots which are 

 mildewed should be removed. 



Spray plums and damsons with weak emulsion or 

 nicotine as soon as ever any aphis appears, using an 



