524 Report of the Mycologist of the 



leaves. The disease was slightly checked. About July 20 the 

 bulbs were dug and appeared entirely normal but it is likely that 

 they were deficient in starch. 



2, Two other beds of Lilium candidum of about the game size as 

 the first were sprayed twice — June 2i and July 6. A small adjacent 

 bed, equally diseased, was left as a check. The disease was well 

 advanced before spraying was commenced. The sprayed beds 

 showed green leaves considerably longer than the check. 



3, Two equal beds of Lilium BatemanU were selected. Every 

 plant showed the disease on nearly every leaf. One bed was un- 

 treated ; the other was sprayed three times — July 6, July 19 and 

 August 2, On August 2 there were 45 live plants on the sprayed 

 bed against five live plants on the unsprayed bed, 



4, Three beds of Lilium s^eciosum^ in fairly good health, were 

 selected. The leaves showed diseased spots here and there. One- 

 half of each bed was sprayed four times, July 19, August 2, 

 August 15 and August 27. By September 20 the disease had made 

 no advance on two of the beds since July 19. On the third bed the 

 untreated portion was badly diseased, while on the sprayed portion 

 the disease had made no advance. 



In none of these experiments did spraying do the plants any 

 practical benefit, bat in all cases sprayed plants held their foilagea 

 little longer than unsprayed, indicating that the disease was checked. 

 Had treatment been commenced before the disease had become 

 established, the difference between treated and untreated plants 

 would undoubtedly have been much greater. It is a general truth 

 that preventive treatment is more successful than curative treatment. 

 Moreover, the weather from June 27 to August 2 was very wet and 

 cloudy, furnishing ideal conditions for the development of the 

 fungus, while at the same time the Bordeaux mixture was badly 

 washed off. 



From the results of the above experiments it seems likely that the 

 following treatment will prove effectual in preventing the Ber- 

 muda lily disease : 



Commencing with the appearance of the leaves, spray thoroughly 

 with Bordeaux mixture at intervals of ten days or two weeks, until 

 the flowers begin to open. With the opening of the flowers spraying^ 

 must be discontinued as it will spot them. 



