76 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



emerge as adults. So that it is possible for a pea to be completely 

 riddled by the larvae, yet none of them be able to get sufficient food 

 to be able to complete their transformations; whereas, another pea 

 ma}^ show some emergence holes and still be able to germinate a good 

 strong plant. But in the long run I do not believe that this will hold 

 and, with the large numbers counted, I believe that the number of 

 emergence holes is indicative of the effectiveness of the remedy, 

 although the exceptions noted above will have to be borne in mind. 

 I believe that the exceptions noted in the table may be accounted for 

 in this way. Take, for instance, the variety clay which was treated 

 with lime one to eight parts of peas. It will be noted that more 

 adults emerged from the treated peas than from the untreated and 

 yet the treated peas germinated 22.5 per cent, whereas, the check 

 germinated only 6 per cent. Now this may be accounted for in this 

 way, adults in large numbers were ready, or almost ready, to emerge 

 when the treatment was given. However, the amount of lime used 

 was sufficient to prevent their laying eggs or prevented the larvsB 

 developing in normal numbers if the eggs did hatch. On the other 

 hand, in the untreated lot the adults emerged and laid eggs in large 

 numbers, these eggs hatched, but the larvae were so crowded that 

 they failed to complete their transformations, but they did not fail 

 to so completely riddle the peas that only a very small percentage were 

 able to germinate. 



The other check on our results was the percentage germinating. 

 These tests were made by the state botanist, Mr. J. L. Burgess, in the 

 usual way for making such tests, and are the averages of two tests of 

 100 peas each. These peas were taken at random from the 1,000 peas 

 that had been previously counted, and represent, it is believed, a fair 

 sample of the various lots of peas. It will be noted from the table 

 that, without exception, the treated peas gave a higher percentage of 

 germination than the untreated peas, although in some cases the 

 differences were not very marked, especially in the case of peas treated 

 one to eleven. This test was in one way not fair, in that it was made 

 several months after the usual time for planting peas, and the percent- 

 ages are undoubtedly much lower than they would have been had the 

 tests been made at planting time. But, on the other hand, if the 

 figures are compared treated with check in each case it does give a 

 comparison that is striking. It will also be noted that, relatively 

 speaking, the greater the amount of lime the higher the germination 

 and also the peas treated with Ume two to one, one to one and one to 

 two show nearly the same percentage, whereas, when we go below one 

 to four the germination falls off very decidedly. 



In conclusion, it seems safe to recommend to farmers to treat their 



