and Nectarine trees. It is known to PEACH BUST. 



scientists as Pitccinia pruiii, and recently 



it has been re-named Uromyces nmtujdali. 



Though most commonly known us the 



Peach Rust this fungus is also common 



to the Almond, Apricot, and Plum. It 



generally makes its appearance about 



mid-summer or soon after, but, as a 



matter of course, the time will vary 



according to the climate and season. 



Sometimes, however, this pest appears 



much earlier in the season. The fungus 



first makes its appearance in the form of 



minute yellow dots upon the upper sides 



of the leaves, and these expand in size till 



they run into each other and form blotches. 



The under sides of the leaves have 



corresponding dots and blotches, and from 



these the spores are distributed. The 



blotches gradually become darker, and 



finally assume a rusty brown colour. The 



spores are produced in great abundance, 



and when discharged are spread widely 



by the wind. Sometimes this fungus also 



attacks the fruit, which it causes to 



assume a blistered or scabby appearance. 



Owing to the colour of the affected 



foliage the pest often passes under the 



name of the Yellows, but is quite distinct 



from the disease known under that name 



in Europe and America. The Rust fungus 



injures the trees by absorbing the sap 



from the leaves, and preventing them 



from performing their ordinary functions, 



causing them to fall prematurely, and, 



consequently, preventing the proper 



development of the young wood and 



friiit^ buds, which is a matter of material 



importance. Preventatives: 1. Collecting 



and destroying by fire all affected haves 



before the dispersal of the spores, which is 



only practicable in the case of small trees. '2. Dressing the steins and 



branches in the winter with a composition cf lime and sulphur or potash. 



3. The use of potash manure or wood ashes freely about the roots. 

 Remedies : 1. Sulphate of Iron used as a spray, and watering the soil 

 with a stronger solution, or for the latter purpose this material may be 

 used as a fine powder in the proportion of about half-a-pound to a medium- 

 sized tree. 2. Bordeaux Mixture. 3. Bluestone and Ammonia. 



4. Bluestone and Sodium Carbonate. Particulars as to the preparation 

 and use of these remedies are given on pages 99 and 102, volume 1. 



Showing Fungus on the Upper 

 Side of a Leaf. 



