254 FUMIGATION METHODS 



finely, and thus causing the gas to generate very quickly, 

 seemed to tend to defoliation as much as anything. 

 However, a very strong, new growth started, and the 

 trees soon assumed a splendid appearance. Curiously 

 enough, lemon and mandarin trees, though treated in 

 the very hottest days, lost no leaves at all. Fumiga- 

 tion, no doubt, is the only royal road to clean trees 

 it absolutely blots the red scale out, and if done before 

 the fruit is too large, a clean crop is assured, as the 

 expansion of the fruit causes the scale to drop off. 

 Brown olive scale is decimated, but not always alto- 

 gether destroyed, though it looks as if, of the two, it 

 would be easier to kill. So far I have treated 1,800 

 trees of various sizes, and I am sure growers will be 

 pleased to know that the average cost per tree, includ- 

 ing labor, price of tents, chemicals, etc., only amounts 

 to T%d. Thus for *]d you get a healthy tree and clean 

 fruit. How much more is this worth than a sickly 

 tree and unmarketable fruit? To show how fumiga- 

 tion is regarded on Emu Plains, I can inform those who 

 are in doubt that since my neighbor growers witnessed 

 the effect of the treatment here some have already com- 

 menced, and others contemplate doing so." 



M. Brown, of Messrs. Rodgers & Co., Galston, 

 writes Mr. Allen as follows: "We have fumigated 

 this year some i , 800 trees, and are entirely satisfied 

 with the result. We started fumigating the first week 

 in May, and a live scale cannot be found on any of the 

 trees done. Fully 50 per cent, of the scale have been 

 cleaned off the trees, and I hope to see the greater part 

 of the remainder cleared off before the bulk of the 

 fruit is marketed. Of course, you will understand 



