990 



JOURNAL OF THE ROYAL HORTHU'LTUHAL SOCIETY. 



the underside causes them to curl. The most injurious fungus is the 

 Black spot or Apple Scab (Fusicladitm deudrii icnvi), also the Canker 

 CungUS on trunk and twigs, and the Powdery mildew (Podosplucra oxy- 

 aoemtha) on the leaves of young Apple-trees. 



Fig. 281. — Nozzles. 



Thk Cost of Strays and Spraying. 

 Spray mixtures cost per 100 gallons wash : 



Paris greened la. (W. per lb., lOoz. to 100| u loOgaUons. 

 gallons + 20 oz. limo 1 



Bordeaux mixture : 



10 lbs. copper sulphate at \d. per lb., 10) ^ ^ m 

 lbs. lime i 



Fid. 2.V2. (lAKKKN Sl'HAY-PUHP. 



Paris green and Bordeaux mixture at above strength : 



10 oz. Paris green, 10 lbs. copper sulphate,) . „ 



„,„! 10 ll.s. lime I U - > " L E* r 100 8* U0M ' 



Pon^i mwMm : l'urailin 10 gallons at). u m m 



H(/., soup q lbs., water 5)0 gallons. I 



