542 Journal of Agriculture , Victoria. [lo Sept.. 19 ij. 



we have so far no universal stock for propagation pur[)oses suitable for all 

 conditions. 



Treatment. — Seedling stocks or young trees attacked in the nursery row 

 t)y any of these three fungus diseases should be dug up and immediately 

 burnt. If standard trees are attacked by Collar Rot or Bark Blotch, the 

 •diseased part should be cut away as soon as detected, care being taken to see 

 that all diseased and discoloured bark and wood is removed. Then paint the 

 wound with equal ptarts of liquid carbolic and Stockholm tar. Give a good 

 ■dressing of lime before replanting stocks in soil in which trees have died 

 irom fungus diseases. Rank weed growths should be ke[)t down, and no mulch 

 allowed to lie about the trunks, particularly during late autumn, winter, or 

 ■early spring as damp and decaying matter close to the butts favours the 

 ■development of fungus disease. If using stable manure or other matter 

 as a mulch durmg the dry season, keep it away from the butt about 6 inches, 

 .and remove the mulch not later than the following April by raking it away 

 from beneath the trees to the centre of the rows, either to decay or be 

 ploughed in. When the trees have attained a fair size, plough 

 only the one way each time ; cross-ploughing should be avoided. 

 Ploughing close to the trees should not be practised. Dusting 

 lime upon the butts and beneath the trees is very beneficial to the 

 health of citrus tree^. Spra)ing the butts with a fungicide once or twice 

 .a year is also good. Gross growth in the nursery row or citrus grove 

 should not be encouraged. The trees should be kept in the best of heart, 

 .and if a fertilizer is required the following mixture will be beneficial : — 

 Sulphate of potash, 4 cwt. ; blood and bone manure, 16 cwt. It is far 

 t)etter to apply a fertilizer twice in the year than all at one time ; early 

 spring and autumn are the suitable seasons. The quantity per tree is con- 

 trolled by its condition and size — roughly, a tree ten years old, of average 

 size, should receive 5 to 6 lbs. at each dressing. 



The following will enable growers to prepare the fungus washes which 

 have been recommended : — Bordeaux Mixture. — Bluestone (sulphate of 

 •copper), 6 lbs. ; fresh unslaked lime, 4 lbs. ; water, 50 gallons. 

 Slake the lime with a small quantity of water, and then make 

 up to 25 gallons. Pulverize the bluestone and dissolve in a 

 small quantity of hot water, then make up to 25 gallons. Stir 

 lime and bluestone water, and run evenly through a strainer into a third 

 Tessel. Stir well, and apply with a fine spray. Lime-SuIpJiur Wash (Stock 

 Mixture). — Best lime, 10 lbs. ; sulphur, 20 lbs. The lime is added to 2 

 gallons of water placed on a fire ; when slaking is well started the sulphur 

 is added, and water to make all to a thin paste is then poured in. When 

 slaking and mixing are complete, 10 gallons of water are added and the 

 mixture boiled for an hour stirring all the time. At the end of the hour 

 there must be 10 gallons of mixture. Covering lihe stock mixture with 

 paraffin oil will prevent air-ciusting. When diluting for spraying take 

 I gallon of stock mixture and dilute to 8 gallons with water. 



Lime-Sulphur Wash is used on trees when dormant or just when buds 

 are beginning to open at a density of 1.03 and at a density of i.oi when 

 huds have burst. The strengths given in the foregoing i in 8 and i in 25 

 give approximately these respective densities, if the mixture is made as 

 directed. It must be pointed out, however, that Lime-Sulphur Wash is still 

 in an experimental stage and should not be given preference over Bordeaux 

 Mixture. Caution. — Lime-Sulphur Wash when buds &c. are vegetative 

 should only be used at a strength of i in 25. 



{Concluded.) 



